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</div> <p class="title is-5 mathjax"> DESI 2024 VII: Cosmological Constraints from the Full-Shape Modeling of Clustering Measurements </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/astro-ph?searchtype=author&amp;query=DESI+Collaboration"> DESI Collaboration</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Adame%2C+A+G">A. G. Adame</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Aguilar%2C+J">J. Aguilar</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Ahlen%2C+S">S. Ahlen</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alam%2C+S">S. Alam</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alexander%2C+D+M">D. M. Alexander</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Prieto%2C+C+A">C. Allende Prieto</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alvarez%2C+M">M. Alvarez</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alves%2C+O">O. Alves</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Anand%2C+A">A. Anand</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Andrade%2C+U">U. Andrade</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Armengaud%2C+E">E. Armengaud</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Avila%2C+S">S. Avila</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Aviles%2C+A">A. Aviles</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Awan%2C+H">H. Awan</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bahr-Kalus%2C+B">B. Bahr-Kalus</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bailey%2C+S">S. Bailey</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Baltay%2C+C">C. Baltay</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bault%2C+A">A. Bault</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Behera%2C+J">J. Behera</a>, <a href="/search/astro-ph?searchtype=author&amp;query=BenZvi%2C+S">S. BenZvi</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Beutler%2C+F">F. Beutler</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bianchi%2C+D">D. Bianchi</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Blake%2C+C">C. Blake</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Blum%2C+R">R. Blum</a> , et al. (188 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2411.12022v2-abstract-short" style="display: inline;"> We present cosmological results from the measurement of clustering of galaxy, quasar and Lyman-$伪$ forest tracers from the first year of observations with the Dark Energy Spectroscopic Instrument (DESI Data Release 1). We adopt the full-shape (FS) modeling of the power spectrum, including the effects of redshift-space distortions, in an analysis which has been validated in a series of supporting p&hellip; <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.12022v2-abstract-full').style.display = 'inline'; document.getElementById('2411.12022v2-abstract-short').style.display = 'none';">&#9661; More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.12022v2-abstract-full" style="display: none;"> We present cosmological results from the measurement of clustering of galaxy, quasar and Lyman-$伪$ forest tracers from the first year of observations with the Dark Energy Spectroscopic Instrument (DESI Data Release 1). We adopt the full-shape (FS) modeling of the power spectrum, including the effects of redshift-space distortions, in an analysis which has been validated in a series of supporting papers. In the flat $螞$CDM cosmological model, DESI (FS+BAO), combined with a baryon density prior from Big Bang Nucleosynthesis and a weak prior on the scalar spectral index, determines matter density to $惟_\mathrm{m}=0.2962\pm 0.0095$, and the amplitude of mass fluctuations to $蟽_8=0.842\pm 0.034$. The addition of the cosmic microwave background (CMB) data tightens these constraints to $惟_\mathrm{m}=0.3056\pm 0.0049$ and $蟽_8=0.8121\pm 0.0053$, while further addition of the the joint clustering and lensing analysis from the Dark Energy Survey Year-3 (DESY3) data leads to a 0.4% determination of the Hubble constant, $H_0 = (68.40\pm 0.27)\,{\rm km\,s^{-1}\,Mpc^{-1}}$. In models with a time-varying dark energy equation of state, combinations of DESI (FS+BAO) with CMB and type Ia supernovae continue to show the preference, previously found in the DESI DR1 BAO analysis, for $w_0&gt;-1$ and $w_a&lt;0$ with similar levels of significance. DESI data, in combination with the CMB, impose the upper limits on the sum of the neutrino masses of $\sum m_谓&lt; 0.071\,{\rm eV}$ at 95% confidence. DESI data alone measure the modified-gravity parameter that controls the clustering of massive particles, $渭_0=0.11^{+0.45}_{-0.54}$, while the combination of DESI with the CMB and the clustering and lensing analysis from DESY3 constrains both modified-gravity parameters, giving $渭_0 = 0.04\pm 0.22$ and $危_0 = 0.044\pm 0.047$, in agreement with general relativity. [Abridged.] <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.12022v2-abstract-full').style.display = 'none'; document.getElementById('2411.12022v2-abstract-short').style.display = 'inline';">&#9651; Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">This DESI Collaboration Key Publication is part of the 2024 publication series using the first year of observations (see https://data.desi.lbl.gov/doc/papers/). 55 pages, 10 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.12021">arXiv:2411.12021</a> <span>&nbsp;[<a href="https://arxiv.org/pdf/2411.12021">pdf</a>, <a href="https://arxiv.org/format/2411.12021">other</a>]&nbsp;</span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> </div> </div> <p class="title is-5 mathjax"> DESI 2024 V: Full-Shape Galaxy Clustering from Galaxies and Quasars </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/astro-ph?searchtype=author&amp;query=DESI+Collaboration"> DESI Collaboration</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Adame%2C+A+G">A. G. Adame</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Aguilar%2C+J">J. Aguilar</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Ahlen%2C+S">S. Ahlen</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alam%2C+S">S. Alam</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alexander%2C+D+M">D. M. Alexander</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alvarez%2C+M">M. Alvarez</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alves%2C+O">O. Alves</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Anand%2C+A">A. Anand</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Andrade%2C+U">U. Andrade</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Armengaud%2C+E">E. Armengaud</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Avila%2C+S">S. Avila</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Aviles%2C+A">A. Aviles</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Awan%2C+H">H. Awan</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bailey%2C+S">S. Bailey</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Baltay%2C+C">C. Baltay</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bault%2C+A">A. Bault</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Behera%2C+J">J. Behera</a>, <a href="/search/astro-ph?searchtype=author&amp;query=BenZvi%2C+S">S. BenZvi</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Beutler%2C+F">F. Beutler</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bianchi%2C+D">D. Bianchi</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Blake%2C+C">C. Blake</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Blum%2C+R">R. Blum</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Brieden%2C+S">S. Brieden</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Brodzeller%2C+A">A. Brodzeller</a> , et al. (174 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2411.12021v2-abstract-short" style="display: inline;"> We present the measurements and cosmological implications of the galaxy two-point clustering using over 4.7 million unique galaxy and quasar redshifts in the range $0.1&lt;z&lt;2.1$ divided into six redshift bins over a $\sim 7,500$ square degree footprint, from the first year of observations with the Dark Energy Spectroscopic Instrument (DESI Data Release 1). By fitting the full power spectrum, we exte&hellip; <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.12021v2-abstract-full').style.display = 'inline'; document.getElementById('2411.12021v2-abstract-short').style.display = 'none';">&#9661; More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.12021v2-abstract-full" style="display: none;"> We present the measurements and cosmological implications of the galaxy two-point clustering using over 4.7 million unique galaxy and quasar redshifts in the range $0.1&lt;z&lt;2.1$ divided into six redshift bins over a $\sim 7,500$ square degree footprint, from the first year of observations with the Dark Energy Spectroscopic Instrument (DESI Data Release 1). By fitting the full power spectrum, we extend previous DESI DR1 baryon acoustic oscillation (BAO) measurements to include redshift-space distortions and signals from the matter-radiation equality scale. For the first time, this Full-Shape analysis is blinded at the catalogue-level to avoid confirmation bias and the systematic errors are accounted for at the two-point clustering level, which automatically propagates them into any cosmological parameter. When analysing the data in terms of compressed model-agnostic variables, we obtain a combined precision of 4.7\% on the amplitude of the redshift space distortion signal reaching similar precision with just one year of DESI data than with 20 years of observation from previous generation surveys. We analyse the data to directly constrain the cosmological parameters within the $螞$CDM model using perturbation theory and combine this information with the reconstructed DESI DR1 galaxy BAO. Using a Big Bang Nucleosynthesis Gaussian prior on the baryon density parameter, and a Gaussian prior on the spectral index, we constrain the matter density is $惟_m=0.296\pm 0.010 $ and the Hubble constant $H_0=(68.63 \pm 0.79)[{\rm km\, s^{-1}Mpc^{-1}}]$. Additionally, we measure the amplitude of clustering $蟽_8=0.841 \pm 0.034$. The DESI DR1 results are in agreement with the $螞$CDM model based on general relativity with parameters consistent with those from Planck. The cosmological interpretation of these results in combination with external datasets are presented in a companion paper. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.12021v2-abstract-full').style.display = 'none'; document.getElementById('2411.12021v2-abstract-short').style.display = 'inline';">&#9651; Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">This DESI Collaboration Key Publication is part of the 2024 publication series using the first year of observations (see https://data.desi.lbl.gov/doc/papers/). 76 pages, 20 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.12020">arXiv:2411.12020</a> <span>&nbsp;[<a href="https://arxiv.org/pdf/2411.12020">pdf</a>, <a href="https://arxiv.org/format/2411.12020">other</a>]&nbsp;</span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> </div> </div> <p class="title is-5 mathjax"> DESI 2024 II: Sample Definitions, Characteristics, and Two-point Clustering Statistics </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/astro-ph?searchtype=author&amp;query=DESI+Collaboration"> DESI Collaboration</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Adame%2C+A+G">A. G. Adame</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Aguilar%2C+J">J. Aguilar</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Ahlen%2C+S">S. Ahlen</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alam%2C+S">S. Alam</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alexander%2C+D+M">D. M. Alexander</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alvarez%2C+M">M. Alvarez</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alves%2C+O">O. Alves</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Anand%2C+A">A. Anand</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Andrade%2C+U">U. Andrade</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Armengaud%2C+E">E. Armengaud</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Avila%2C+S">S. Avila</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Aviles%2C+A">A. Aviles</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Awan%2C+H">H. Awan</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bailey%2C+S">S. Bailey</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Baltay%2C+C">C. Baltay</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bault%2C+A">A. Bault</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Behera%2C+J">J. Behera</a>, <a href="/search/astro-ph?searchtype=author&amp;query=BenZvi%2C+S">S. BenZvi</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Beutler%2C+F">F. Beutler</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bianchi%2C+D">D. Bianchi</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Blake%2C+C">C. Blake</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Blum%2C+R">R. Blum</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Brieden%2C+S">S. Brieden</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Brodzeller%2C+A">A. Brodzeller</a> , et al. (178 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2411.12020v1-abstract-short" style="display: inline;"> We present the samples of galaxies and quasars used for DESI 2024 cosmological analyses, drawn from the DESI Data Release 1 (DR1). We describe the construction of large-scale structure (LSS) catalogs from these samples, which include matched sets of synthetic reference `randoms&#39; and weights that account for variations in the observed density of the samples due to experimental design and varying in&hellip; <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.12020v1-abstract-full').style.display = 'inline'; document.getElementById('2411.12020v1-abstract-short').style.display = 'none';">&#9661; More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.12020v1-abstract-full" style="display: none;"> We present the samples of galaxies and quasars used for DESI 2024 cosmological analyses, drawn from the DESI Data Release 1 (DR1). We describe the construction of large-scale structure (LSS) catalogs from these samples, which include matched sets of synthetic reference `randoms&#39; and weights that account for variations in the observed density of the samples due to experimental design and varying instrument performance. We detail how we correct for variations in observational completeness, the input `target&#39; densities due to imaging systematics, and the ability to confidently measure redshifts from DESI spectra. We then summarize how remaining uncertainties in the corrections can be translated to systematic uncertainties for particular analyses. We describe the weights added to maximize the signal-to-noise of DESI DR1 2-point clustering measurements. We detail measurement pipelines applied to the LSS catalogs that obtain 2-point clustering measurements in configuration and Fourier space. The resulting 2-point measurements depend on window functions and normalization constraints particular to each sample, and we present the corrections required to match models to the data. We compare the configuration- and Fourier-space 2-point clustering of the data samples to that recovered from simulations of DESI DR1 and find they are, generally, in statistical agreement to within 2\% in the inferred real-space over-density field. The LSS catalogs, 2-point measurements, and their covariance matrices will be released publicly with DESI DR1. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.12020v1-abstract-full').style.display = 'none'; document.getElementById('2411.12020v1-abstract-short').style.display = 'inline';">&#9651; Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">This DESI Collaboration Key Publication is part of the 2024 publication series using the first year of observations (see https://data.desi.lbl.gov/doc/papers/)</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.16548">arXiv:2409.16548</a> <span>&nbsp;[<a href="https://arxiv.org/pdf/2409.16548">pdf</a>, <a href="https://arxiv.org/format/2409.16548">other</a>]&nbsp;</span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Astrophysics of Galaxies">astro-ph.GA</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> </div> </div> <p class="title is-5 mathjax"> Optimised neural network predictions of galaxy formation histories using semi-stochastic corrections </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/astro-ph?searchtype=author&amp;query=Behera%2C+J">Jayashree Behera</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Tojeiro%2C+R">Rita Tojeiro</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Chittenden%2C+H+G">Harry George Chittenden</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2409.16548v2-abstract-short" style="display: inline;"> We present a novel methodology to improve neural network (NN) predictions of galaxy formation histories by incorporating semi-stochastic corrections to account for short-timescale variability. Our paper addresses limitations in existing models that capture broad trends in galaxy evolution, but fail to reproduce the bursty nature of star formation and chemical enrichment, resulting in inaccurate pr&hellip; <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.16548v2-abstract-full').style.display = 'inline'; document.getElementById('2409.16548v2-abstract-short').style.display = 'none';">&#9661; More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.16548v2-abstract-full" style="display: none;"> We present a novel methodology to improve neural network (NN) predictions of galaxy formation histories by incorporating semi-stochastic corrections to account for short-timescale variability. Our paper addresses limitations in existing models that capture broad trends in galaxy evolution, but fail to reproduce the bursty nature of star formation and chemical enrichment, resulting in inaccurate predictions of key observables such as stellar masses, optical spectra, and colour distributions. We introduce a simple technique to add stochastic components by utilizing the power spectra of galaxy formation histories. We justify our stochastic approach by studying the correlation between the phases of the halo mass assembly and star-formation histories in the IllustrisTNG simulation, and we find that they are correlated only on timescales longer than 6 Gyr, with a strong dependence on galaxy type. Building on NNs developed in Chittenden &amp; Tojeiro (2023), trained on hydrodynamical simulations from the IllustrisTNG project, which predict time-resolved star formation and stellar metallicity histories for central and satellite galaxies based solely on the properties and evolution of their dark matter halos and environments, this approach successfully recovers realistic variability in galaxy properties at short timescales. It significantly improves the accuracy of predicted stellar masses, metallicities, spectra, and colour distributions and provides a powerful framework for generating large, realistic mock galaxy catalogs, while also enhancing our understanding of the complex interplay between galaxy evolution and dark matter halo assembly. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.16548v2-abstract-full').style.display = 'none'; document.getElementById('2409.16548v2-abstract-short').style.display = 'inline';">&#9651; Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">18 pages, 20 figures, submitted to MNRAS alongside companion paper - arXiv:2409.16079</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.16079">arXiv:2409.16079</a> <span>&nbsp;[<a href="https://arxiv.org/pdf/2409.16079">pdf</a>, <a href="https://arxiv.org/format/2409.16079">other</a>]&nbsp;</span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Astrophysics of Galaxies">astro-ph.GA</span> </div> </div> <p class="title is-5 mathjax"> Evaluating the galaxy formation histories predicted by a neural network in pure dark matter simulations </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/astro-ph?searchtype=author&amp;query=Chittenden%2C+H+G">Harry George Chittenden</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Behera%2C+J">Jayashree Behera</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Tojeiro%2C+R">Rita Tojeiro</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2409.16079v2-abstract-short" style="display: inline;"> We investigate a series of galaxy properties computed using the merger trees and environmental histories from dark matter only cosmological simulations, using the predictive semi-recurrent neural network outlined in Chittenden and Tojeiro (2023), and using stochastic improvements presented in our companion paper: Behera, Tojeiro and Chittenden (2024). We apply these methods to the dark matter only&hellip; <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.16079v2-abstract-full').style.display = 'inline'; document.getElementById('2409.16079v2-abstract-short').style.display = 'none';">&#9661; More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.16079v2-abstract-full" style="display: none;"> We investigate a series of galaxy properties computed using the merger trees and environmental histories from dark matter only cosmological simulations, using the predictive semi-recurrent neural network outlined in Chittenden and Tojeiro (2023), and using stochastic improvements presented in our companion paper: Behera, Tojeiro and Chittenden (2024). We apply these methods to the dark matter only runs of the IllustrisTNG simulations to understand the effects of baryon removal, and to the gigaparsec-volume pure dark matter simulation Uchuu, to understand the effects of the lower resolution or alternative metrics for halo properties. We find that the machine learning model recovers accurate summary statistics derived from the predicted star formation and stellar metallicity histories, and correspondent spectroscopy and photometry. However, the inaccuracies of the model&#39;s application to dark simulations are substantial for low mass and slowly growing haloes. For these objects, the halo mass accretion rate is exaggerated due to the lack of stellar feedback, yet the formation of the halo can be severely limited by the absence of low mass progenitors in a low resolution simulation. Furthermore, differences in the structure and environment of higher mass haloes results in an overabundance of red, quenched galaxies. These results signify progress towards a machine learning model which builds high fidelity mocks based on a physical interpretation of the galaxy-halo connection, yet they illustrate the need to account for differences in halo properties and the resolution of the simulation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.16079v2-abstract-full').style.display = 'none'; document.getElementById('2409.16079v2-abstract-short').style.display = 'inline';">&#9651; Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">21 pages, 17 figures, submitted to MNRAS alongside companion paper: arXiv:2409.16548</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.03002">arXiv:2404.03002</a> <span>&nbsp;[<a href="https://arxiv.org/pdf/2404.03002">pdf</a>, <a href="https://arxiv.org/format/2404.03002">other</a>]&nbsp;</span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> </div> </div> <p class="title is-5 mathjax"> DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/astro-ph?searchtype=author&amp;query=DESI+Collaboration"> DESI Collaboration</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Adame%2C+A+G">A. G. Adame</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Aguilar%2C+J">J. Aguilar</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Ahlen%2C+S">S. Ahlen</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alam%2C+S">S. Alam</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alexander%2C+D+M">D. M. Alexander</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alvarez%2C+M">M. Alvarez</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alves%2C+O">O. Alves</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Anand%2C+A">A. Anand</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Andrade%2C+U">U. Andrade</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Armengaud%2C+E">E. Armengaud</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Avila%2C+S">S. Avila</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Aviles%2C+A">A. Aviles</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Awan%2C+H">H. Awan</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bahr-Kalus%2C+B">B. Bahr-Kalus</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bailey%2C+S">S. Bailey</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Baltay%2C+C">C. Baltay</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bault%2C+A">A. Bault</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Behera%2C+J">J. Behera</a>, <a href="/search/astro-ph?searchtype=author&amp;query=BenZvi%2C+S">S. BenZvi</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bera%2C+A">A. Bera</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Beutler%2C+F">F. Beutler</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bianchi%2C+D">D. Bianchi</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Blake%2C+C">C. Blake</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Blum%2C+R">R. Blum</a> , et al. (178 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2404.03002v3-abstract-short" style="display: inline;"> We present cosmological results from the measurement of baryon acoustic oscillations (BAO) in galaxy, quasar and Lyman-$伪$ forest tracers from the first year of observations from the Dark Energy Spectroscopic Instrument (DESI), to be released in the DESI Data Release 1. DESI BAO provide robust measurements of the transverse comoving distance and Hubble rate, or their combination, relative to the s&hellip; <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.03002v3-abstract-full').style.display = 'inline'; document.getElementById('2404.03002v3-abstract-short').style.display = 'none';">&#9661; More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.03002v3-abstract-full" style="display: none;"> We present cosmological results from the measurement of baryon acoustic oscillations (BAO) in galaxy, quasar and Lyman-$伪$ forest tracers from the first year of observations from the Dark Energy Spectroscopic Instrument (DESI), to be released in the DESI Data Release 1. DESI BAO provide robust measurements of the transverse comoving distance and Hubble rate, or their combination, relative to the sound horizon, in seven redshift bins from over 6 million extragalactic objects in the redshift range $0.1&lt;z&lt;4.2$. DESI BAO data alone are consistent with the standard flat $螞$CDM cosmological model with a matter density $惟_\mathrm{m}=0.295\pm 0.015$. Paired with a BBN prior and the robustly measured acoustic angular scale from the CMB, DESI requires $H_0=(68.52\pm0.62)$ km/s/Mpc. In conjunction with CMB anisotropies from Planck and CMB lensing data from Planck and ACT, we find $惟_\mathrm{m}=0.307\pm 0.005$ and $H_0=(67.97\pm0.38)$ km/s/Mpc. Extending the baseline model with a constant dark energy equation of state parameter $w$, DESI BAO alone require $w=-0.99^{+0.15}_{-0.13}$. In models with a time-varying dark energy equation of state parametrized by $w_0$ and $w_a$, combinations of DESI with CMB or with SN~Ia individually prefer $w_0&gt;-1$ and $w_a&lt;0$. This preference is 2.6$蟽$ for the DESI+CMB combination, and persists or grows when SN~Ia are added in, giving results discrepant with the $螞$CDM model at the $2.5蟽$, $3.5蟽$ or $3.9蟽$ levels for the addition of Pantheon+, Union3, or DES-SN5YR datasets respectively. For the flat $螞$CDM model with the sum of neutrino mass $\sum m_谓$ free, combining the DESI and CMB data yields an upper limit $\sum m_谓&lt; 0.072$ $(0.113)$ eV at 95% confidence for a $\sum m_谓&gt;0$ $(\sum m_谓&gt;0.059)$ eV prior. These neutrino-mass constraints are substantially relaxed in models beyond $螞$CDM. [Abridged.] <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.03002v3-abstract-full').style.display = 'none'; document.getElementById('2404.03002v3-abstract-short').style.display = 'inline';">&#9651; Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 3 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">This DESI Collaboration Key Publication is part of the 2024 publication series using the first year of observations (see https://data.desi.lbl.gov/doc/papers). 68 pages, 15 figures. Version accepted for publication in JCAP</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.03001">arXiv:2404.03001</a> <span>&nbsp;[<a href="https://arxiv.org/pdf/2404.03001">pdf</a>, <a href="https://arxiv.org/format/2404.03001">other</a>]&nbsp;</span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1475-7516/2025/01/124">10.1088/1475-7516/2025/01/124 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman Alpha Forest </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/astro-ph?searchtype=author&amp;query=DESI+Collaboration"> DESI Collaboration</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Adame%2C+A+G">A. G. Adame</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Aguilar%2C+J">J. Aguilar</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Ahlen%2C+S">S. Ahlen</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alam%2C+S">S. Alam</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alexander%2C+D+M">D. M. Alexander</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alvarez%2C+M">M. Alvarez</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alves%2C+O">O. Alves</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Anand%2C+A">A. Anand</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Andrade%2C+U">U. Andrade</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Armengaud%2C+E">E. Armengaud</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Avila%2C+S">S. Avila</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Aviles%2C+A">A. Aviles</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Awan%2C+H">H. Awan</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bailey%2C+S">S. Bailey</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Baltay%2C+C">C. Baltay</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bault%2C+A">A. Bault</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bautista%2C+J">J. Bautista</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Behera%2C+J">J. Behera</a>, <a href="/search/astro-ph?searchtype=author&amp;query=BenZvi%2C+S">S. BenZvi</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Beutler%2C+F">F. Beutler</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bianchi%2C+D">D. Bianchi</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Blake%2C+C">C. Blake</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Blum%2C+R">R. Blum</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Brieden%2C+S">S. Brieden</a> , et al. (174 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2404.03001v4-abstract-short" style="display: inline;"> We present the measurement of Baryon Acoustic Oscillations (BAO) from the Lyman-$伪$ (Ly$伪$) forest of high-redshift quasars with the first-year dataset of the Dark Energy Spectroscopic Instrument (DESI). Our analysis uses over $420\,000$ Ly$伪$ forest spectra and their correlation with the spatial distribution of more than $700\,000$ quasars. An essential facet of this work is the development of a&hellip; <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.03001v4-abstract-full').style.display = 'inline'; document.getElementById('2404.03001v4-abstract-short').style.display = 'none';">&#9661; More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.03001v4-abstract-full" style="display: none;"> We present the measurement of Baryon Acoustic Oscillations (BAO) from the Lyman-$伪$ (Ly$伪$) forest of high-redshift quasars with the first-year dataset of the Dark Energy Spectroscopic Instrument (DESI). Our analysis uses over $420\,000$ Ly$伪$ forest spectra and their correlation with the spatial distribution of more than $700\,000$ quasars. An essential facet of this work is the development of a new analysis methodology on a blinded dataset. We conducted rigorous tests using synthetic data to ensure the reliability of our methodology and findings before unblinding. Additionally, we conducted multiple data splits to assess the consistency of the results and scrutinized various analysis approaches to confirm their robustness. For a given value of the sound horizon ($r_d$), we measure the expansion at $z_{\rm eff}=2.33$ with 2\% precision, $H(z_{\rm eff}) = (239.2 \pm 4.8) (147.09~{\rm Mpc} /r_d)$ km/s/Mpc. Similarly, we present a 2.4\% measurement of the transverse comoving distance to the same redshift, $D_M(z_{\rm eff}) = (5.84 \pm 0.14) (r_d/147.09~{\rm Mpc})$ Gpc. Together with other DESI BAO measurements at lower redshifts, these results are used in a companion paper to constrain cosmological parameters. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.03001v4-abstract-full').style.display = 'none'; document.getElementById('2404.03001v4-abstract-short').style.display = 'inline';">&#9651; Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 3 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">This DESI Collaboration Key Publication is part of the 2024 publication series using the first year of observations (see https://data.desi.lbl.gov/doc/papers). Minor changes in v4, version accepted for publication in JCAP</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.03000">arXiv:2404.03000</a> <span>&nbsp;[<a href="https://arxiv.org/pdf/2404.03000">pdf</a>, <a href="https://arxiv.org/format/2404.03000">other</a>]&nbsp;</span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> </div> </div> <p class="title is-5 mathjax"> DESI 2024 III: Baryon Acoustic Oscillations from Galaxies and Quasars </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/astro-ph?searchtype=author&amp;query=DESI+Collaboration"> DESI Collaboration</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Adame%2C+A+G">A. G. Adame</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Aguilar%2C+J">J. Aguilar</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Ahlen%2C+S">S. Ahlen</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alam%2C+S">S. Alam</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alexander%2C+D+M">D. M. Alexander</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alvarez%2C+M">M. Alvarez</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alves%2C+O">O. Alves</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Anand%2C+A">A. Anand</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Andrade%2C+U">U. Andrade</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Armengaud%2C+E">E. Armengaud</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Avila%2C+S">S. Avila</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Aviles%2C+A">A. Aviles</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Awan%2C+H">H. Awan</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bailey%2C+S">S. Bailey</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Baltay%2C+C">C. Baltay</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bault%2C+A">A. Bault</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Behera%2C+J">J. Behera</a>, <a href="/search/astro-ph?searchtype=author&amp;query=BenZvi%2C+S">S. BenZvi</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Beutler%2C+F">F. Beutler</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bianchi%2C+D">D. Bianchi</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Blake%2C+C">C. Blake</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Blum%2C+R">R. Blum</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Brieden%2C+S">S. Brieden</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Brodzeller%2C+A">A. Brodzeller</a> , et al. (171 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2404.03000v1-abstract-short" style="display: inline;"> We present the DESI 2024 galaxy and quasar baryon acoustic oscillations (BAO) measurements using over 5.7 million unique galaxy and quasar redshifts in the range 0.1&lt;z&lt;2.1. Divided by tracer type, we utilize 300,017 galaxies from the magnitude-limited Bright Galaxy Survey with 0.1&lt;z&lt;0.4, 2,138,600 Luminous Red Galaxies with 0.4&lt;z&lt;1.1, 2,432,022 Emission Line Galaxies with 0.8&lt;z&lt;1.6, and 856,652 qu&hellip; <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.03000v1-abstract-full').style.display = 'inline'; document.getElementById('2404.03000v1-abstract-short').style.display = 'none';">&#9661; More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.03000v1-abstract-full" style="display: none;"> We present the DESI 2024 galaxy and quasar baryon acoustic oscillations (BAO) measurements using over 5.7 million unique galaxy and quasar redshifts in the range 0.1&lt;z&lt;2.1. Divided by tracer type, we utilize 300,017 galaxies from the magnitude-limited Bright Galaxy Survey with 0.1&lt;z&lt;0.4, 2,138,600 Luminous Red Galaxies with 0.4&lt;z&lt;1.1, 2,432,022 Emission Line Galaxies with 0.8&lt;z&lt;1.6, and 856,652 quasars with 0.8&lt;z&lt;2.1, over a ~7,500 square degree footprint. The analysis was blinded at the catalog-level to avoid confirmation bias. All fiducial choices of the BAO fitting and reconstruction methodology, as well as the size of the systematic errors, were determined on the basis of the tests with mock catalogs and the blinded data catalogs. We present several improvements to the BAO analysis pipeline, including enhancing the BAO fitting and reconstruction methods in a more physically-motivated direction, and also present results using combinations of tracers. We present a re-analysis of SDSS BOSS and eBOSS results applying the improved DESI methodology and find scatter consistent with the level of the quoted SDSS theoretical systematic uncertainties. With the total effective survey volume of ~ 18 Gpc$^3$, the combined precision of the BAO measurements across the six different redshift bins is ~0.52%, marking a 1.2-fold improvement over the previous state-of-the-art results using only first-year data. We detect the BAO in all of these six redshift bins. The highest significance of BAO detection is $9.1蟽$ at the effective redshift of 0.93, with a constraint of 0.86% placed on the BAO scale. We find our measurements are systematically larger than the prediction of Planck-2018 LCDM model at z&lt;0.8. We translate the results into transverse comoving distance and radial Hubble distance measurements, which are used to constrain cosmological models in our companion paper [abridged]. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.03000v1-abstract-full').style.display = 'none'; document.getElementById('2404.03000v1-abstract-short').style.display = 'inline';">&#9651; Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">This DESI Collaboration Key Publication is part of the 2024 publication series using the first year of observations (see https://data.desi.lbl.gov/doc/papers)</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2312.05942">arXiv:2312.05942</a> <span>&nbsp;[<a href="https://arxiv.org/pdf/2312.05942">pdf</a>, <a href="https://arxiv.org/format/2312.05942">other</a>]&nbsp;</span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> </div> </div> <p class="title is-5 mathjax"> Modeling the BAO feature in Bispectrum </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/astro-ph?searchtype=author&amp;query=Behera%2C+J">Jayashree Behera</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Rezaie%2C+M">Mehdi Rezaie</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Samushia%2C+L">Lado Samushia</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Ereza%2C+J">Julia Ereza</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2312.05942v2-abstract-short" style="display: inline;"> We investigate how well a simple leading order perturbation theory model of the bispectrum can fit the BAO feature in the measured bispectrum monopole of galaxies. Previous works showed that perturbative models of galaxy bispectrum start failing at the wavenumbers of k ~ 0.1 Mpc/h. We show that when the BAO feature in the bispectrum is separated it can be successfully modeled up to much higher wav&hellip; <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.05942v2-abstract-full').style.display = 'inline'; document.getElementById('2312.05942v2-abstract-short').style.display = 'none';">&#9661; More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2312.05942v2-abstract-full" style="display: none;"> We investigate how well a simple leading order perturbation theory model of the bispectrum can fit the BAO feature in the measured bispectrum monopole of galaxies. Previous works showed that perturbative models of galaxy bispectrum start failing at the wavenumbers of k ~ 0.1 Mpc/h. We show that when the BAO feature in the bispectrum is separated it can be successfully modeled up to much higher wavenumbers. We validate our modeling on GLAM simulations that were run with and without the BAO feature in the initial conditions. We also quantify the amount of systematic error due to BAO template being offset from the true cosmology. We find that the systematic errors do not exceed 0.3 per cent for reasonable deviations from the true cosmology. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.05942v2-abstract-full').style.display = 'none'; document.getElementById('2312.05942v2-abstract-short').style.display = 'inline';">&#9651; Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Published version</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2306.11784">arXiv:2306.11784</a> <span>&nbsp;[<a href="https://arxiv.org/pdf/2306.11784">pdf</a>, <a href="https://arxiv.org/format/2306.11784">other</a>]&nbsp;</span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> </div> </div> <p class="title is-5 mathjax"> NANCY: Next-generation All-sky Near-infrared Community surveY </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/astro-ph?searchtype=author&amp;query=Han%2C+J+J">Jiwon Jesse Han</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Dey%2C+A">Arjun Dey</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Price-Whelan%2C+A+M">Adrian M. Price-Whelan</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Najita%2C+J">Joan Najita</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Schlafly%2C+E+F">Edward F. Schlafly</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Saydjari%2C+A">Andrew Saydjari</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Wechsler%2C+R+H">Risa H. Wechsler</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bonaca%2C+A">Ana Bonaca</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Schlegel%2C+D+J">David J Schlegel</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Conroy%2C+C">Charlie Conroy</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Raichoor%2C+A">Anand Raichoor</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Drlica-Wagner%2C+A">Alex Drlica-Wagner</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Kollmeier%2C+J+A">Juna A. Kollmeier</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Koposov%2C+S+E">Sergey E. Koposov</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Besla%2C+G">Gurtina Besla</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Rix%2C+H">Hans-Walter Rix</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Goodman%2C+A">Alyssa Goodman</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Finkbeiner%2C+D">Douglas Finkbeiner</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Anand%2C+A">Abhijeet Anand</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Ashby%2C+M">Matthew Ashby</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bahr-Kalus%2C+B">Benedict Bahr-Kalus</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Beaton%2C+R">Rachel Beaton</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Behera%2C+J">Jayashree Behera</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bell%2C+E+F">Eric F. Bell</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bellm%2C+E+C">Eric C Bellm</a> , et al. (184 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2306.11784v1-abstract-short" style="display: inline;"> The Nancy Grace Roman Space Telescope is capable of delivering an unprecedented all-sky, high-spatial resolution, multi-epoch infrared map to the astronomical community. This opportunity arises in the midst of numerous ground- and space-based surveys that will provide extensive spectroscopy and imaging together covering the entire sky (such as Rubin/LSST, Euclid, UNIONS, SPHEREx, DESI, SDSS-V, GAL&hellip; <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.11784v1-abstract-full').style.display = 'inline'; document.getElementById('2306.11784v1-abstract-short').style.display = 'none';">&#9661; More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2306.11784v1-abstract-full" style="display: none;"> The Nancy Grace Roman Space Telescope is capable of delivering an unprecedented all-sky, high-spatial resolution, multi-epoch infrared map to the astronomical community. This opportunity arises in the midst of numerous ground- and space-based surveys that will provide extensive spectroscopy and imaging together covering the entire sky (such as Rubin/LSST, Euclid, UNIONS, SPHEREx, DESI, SDSS-V, GALAH, 4MOST, WEAVE, MOONS, PFS, UVEX, NEO Surveyor, etc.). Roman can uniquely provide uniform high-spatial-resolution (~0.1 arcsec) imaging over the entire sky, vastly expanding the science reach and precision of all of these near-term and future surveys. This imaging will not only enhance other surveys, but also facilitate completely new science. By imaging the full sky over two epochs, Roman can measure the proper motions for stars across the entire Milky Way, probing 100 times fainter than Gaia out to the very edge of the Galaxy. Here, we propose NANCY: a completely public, all-sky survey that will create a high-value legacy dataset benefiting innumerable ongoing and forthcoming studies of the universe. NANCY is a pure expression of Roman&#39;s potential: it images the entire sky, at high spatial resolution, in a broad infrared bandpass that collects as many photons as possible. The majority of all ongoing astronomical surveys would benefit from incorporating observations of NANCY into their analyses, whether these surveys focus on nearby stars, the Milky Way, near-field cosmology, or the broader universe. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.11784v1-abstract-full').style.display = 'none'; document.getElementById('2306.11784v1-abstract-short').style.display = 'inline';">&#9651; Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 June, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Submitted to the call for white papers for the Roman Core Community Survey (June 16th, 2023), and to the Bulletin of the AAS</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2306.06308">arXiv:2306.06308</a> <span>&nbsp;[<a href="https://arxiv.org/pdf/2306.06308">pdf</a>, <a href="https://arxiv.org/format/2306.06308">other</a>]&nbsp;</span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.3847/1538-3881/ad3217">10.3847/1538-3881/ad3217 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The Early Data Release of the Dark Energy Spectroscopic Instrument </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/astro-ph?searchtype=author&amp;query=DESI+Collaboration"> DESI Collaboration</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Adame%2C+A+G">A. G. Adame</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Aguilar%2C+J">J. Aguilar</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Ahlen%2C+S">S. Ahlen</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alam%2C+S">S. Alam</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Aldering%2C+G">G. Aldering</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alexander%2C+D+M">D. M. Alexander</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alfarsy%2C+R">R. Alfarsy</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Prieto%2C+C+A">C. Allende Prieto</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alvarez%2C+M">M. Alvarez</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alves%2C+O">O. Alves</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Anand%2C+A">A. Anand</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Andrade-Oliveira%2C+F">F. Andrade-Oliveira</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Armengaud%2C+E">E. Armengaud</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Asorey%2C+J">J. Asorey</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Avila%2C+S">S. Avila</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Aviles%2C+A">A. Aviles</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bailey%2C+S">S. Bailey</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Balaguera-Antol%C3%ADnez%2C+A">A. Balaguera-Antol铆nez</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Ballester%2C+O">O. Ballester</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Baltay%2C+C">C. Baltay</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bault%2C+A">A. Bault</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bautista%2C+J">J. Bautista</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Behera%2C+J">J. Behera</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Beltran%2C+S+F">S. F. Beltran</a> , et al. (244 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2306.06308v3-abstract-short" style="display: inline;"> The Dark Energy Spectroscopic Instrument (DESI) completed its five-month Survey Validation in May 2021. Spectra of stellar and extragalactic targets from Survey Validation constitute the first major data sample from the DESI survey. This paper describes the public release of those spectra, the catalogs of derived properties, and the intermediate data products. In total, the public release includes&hellip; <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.06308v3-abstract-full').style.display = 'inline'; document.getElementById('2306.06308v3-abstract-short').style.display = 'none';">&#9661; More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2306.06308v3-abstract-full" style="display: none;"> The Dark Energy Spectroscopic Instrument (DESI) completed its five-month Survey Validation in May 2021. Spectra of stellar and extragalactic targets from Survey Validation constitute the first major data sample from the DESI survey. This paper describes the public release of those spectra, the catalogs of derived properties, and the intermediate data products. In total, the public release includes good-quality spectral information from 466,447 objects targeted as part of the Milky Way Survey, 428,758 as part of the Bright Galaxy Survey, 227,318 as part of the Luminous Red Galaxy sample, 437,664 as part of the Emission Line Galaxy sample, and 76,079 as part of the Quasar sample. In addition, the release includes spectral information from 137,148 objects that expand the scope beyond the primary samples as part of a series of secondary programs. Here, we describe the spectral data, data quality, data products, Large-Scale Structure science catalogs, access to the data, and references that provide relevant background to using these spectra. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.06308v3-abstract-full').style.display = 'none'; document.getElementById('2306.06308v3-abstract-short').style.display = 'inline';">&#9651; Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 June, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">43 pages, 7 figures, 17 tables, accepted for publication in the Astronomical Journal</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> AJ 168 58 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2306.06307">arXiv:2306.06307</a> <span>&nbsp;[<a href="https://arxiv.org/pdf/2306.06307">pdf</a>, <a href="https://arxiv.org/format/2306.06307">other</a>]&nbsp;</span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.5281/zenodo.7858207">10.5281/zenodo.7858207 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Validation of the Scientific Program for the Dark Energy Spectroscopic Instrument </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/astro-ph?searchtype=author&amp;query=DESI+Collaboration"> DESI Collaboration</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Adame%2C+A+G">A. G. Adame</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Aguilar%2C+J">J. Aguilar</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Ahlen%2C+S">S. Ahlen</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alam%2C+S">S. Alam</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Aldering%2C+G">G. Aldering</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alexander%2C+D+M">D. M. Alexander</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alfarsy%2C+R">R. Alfarsy</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Prieto%2C+C+A">C. Allende Prieto</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alvarez%2C+M">M. Alvarez</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Alves%2C+O">O. Alves</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Anand%2C+A">A. Anand</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Andrade-Oliveira%2C+F">F. Andrade-Oliveira</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Armengaud%2C+E">E. Armengaud</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Asorey%2C+J">J. Asorey</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Avila%2C+S">S. Avila</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Aviles%2C+A">A. Aviles</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bailey%2C+S">S. Bailey</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Balaguera-Antol%C3%ADnez%2C+A">A. Balaguera-Antol铆nez</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Ballester%2C+O">O. Ballester</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Baltay%2C+C">C. Baltay</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bault%2C+A">A. Bault</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Bautista%2C+J">J. Bautista</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Behera%2C+J">J. Behera</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Beltran%2C+S+F">S. F. Beltran</a> , et al. (239 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2306.06307v3-abstract-short" style="display: inline;"> The Dark Energy Spectroscopic Instrument (DESI) was designed to conduct a survey covering 14,000 deg$^2$ over five years to constrain the cosmic expansion history through precise measurements of Baryon Acoustic Oscillations (BAO). The scientific program for DESI was evaluated during a five month Survey Validation (SV) campaign before beginning full operations. This program produced deep spectra of&hellip; <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.06307v3-abstract-full').style.display = 'inline'; document.getElementById('2306.06307v3-abstract-short').style.display = 'none';">&#9661; More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2306.06307v3-abstract-full" style="display: none;"> The Dark Energy Spectroscopic Instrument (DESI) was designed to conduct a survey covering 14,000 deg$^2$ over five years to constrain the cosmic expansion history through precise measurements of Baryon Acoustic Oscillations (BAO). The scientific program for DESI was evaluated during a five month Survey Validation (SV) campaign before beginning full operations. This program produced deep spectra of tens of thousands of objects from each of the stellar (MWS), bright galaxy (BGS), luminous red galaxy (LRG), emission line galaxy (ELG), and quasar target classes. These SV spectra were used to optimize redshift distributions, characterize exposure times, determine calibration procedures, and assess observational overheads for the five-year program. In this paper, we present the final target selection algorithms, redshift distributions, and projected cosmology constraints resulting from those studies. We also present a `One-Percent survey&#39; conducted at the conclusion of Survey Validation covering 140 deg$^2$ using the final target selection algorithms with exposures of a depth typical of the main survey. The Survey Validation indicates that DESI will be able to complete the full 14,000 deg$^2$ program with spectroscopically-confirmed targets from the MWS, BGS, LRG, ELG, and quasar programs with total sample sizes of 7.2, 13.8, 7.46, 15.7, and 2.87 million, respectively. These samples will allow exploration of the Milky Way halo, clustering on all scales, and BAO measurements with a statistical precision of 0.28% over the redshift interval $z&lt;1.1$, 0.39% over the redshift interval $1.1&lt;z&lt;1.9$, and 0.46% over the redshift interval $1.9&lt;z&lt;3.5$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.06307v3-abstract-full').style.display = 'none'; document.getElementById('2306.06307v3-abstract-short').style.display = 'inline';">&#9651; Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 January, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 June, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">42 pages, 18 figures, accepted by AJ</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2011.05145">arXiv:2011.05145</a> <span>&nbsp;[<a href="https://arxiv.org/pdf/2011.05145">pdf</a>, <a href="https://arxiv.org/format/2011.05145">other</a>]&nbsp;</span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="General Relativity and Quantum Cosmology">gr-qc</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Astrophysical Phenomena">astro-ph.HE</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Data Analysis, Statistics and Probability">physics.data-an</span> </div> </div> <p class="title is-5 mathjax"> Frequency Estimation of Gravitational Waves from a Binary Black Hole Merger </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/astro-ph?searchtype=author&amp;query=Behera%2C+V+N+J">Varun Nagesh Jolly Behera</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Samanta%2C+A+K">Anik Kumar Samanta</a>, <a href="/search/astro-ph?searchtype=author&amp;query=Routray%2C+A">Aurobinda Routray</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2011.05145v1-abstract-short" style="display: inline;"> This is a collection of literature reviews and some initial work on the estimation of the frequency of gravitational waves from a binary black hole merger for low SNR. This document provides a starting point, with a broad overview of the prerequisites required for the follow-up work on frequency estimation. </span> <span class="abstract-full has-text-grey-dark mathjax" id="2011.05145v1-abstract-full" style="display: none;"> This is a collection of literature reviews and some initial work on the estimation of the frequency of gravitational waves from a binary black hole merger for low SNR. This document provides a starting point, with a broad overview of the prerequisites required for the follow-up work on frequency estimation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.05145v1-abstract-full').style.display = 'none'; document.getElementById('2011.05145v1-abstract-short').style.display = 'inline';">&#9651; Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">arXiv admin note: text overlap with arXiv:1609.05933, arXiv:1810.00040 by other authors</span> </p> </li> </ol> <div class="is-hidden-tablet"> <!-- feedback for mobile only --> <span class="help" style="display: inline-block;"><a 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