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<button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.13873">arXiv:2310.13873</a> <span> [<a href="https://arxiv.org/pdf/2310.13873">pdf</a>, <a href="https://arxiv.org/format/2310.13873">other</a>] </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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Earth and Planetary Astrophysics">astro-ph.EP</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="Solar and Stellar Astrophysics">astro-ph.SR</span> </div> </div> <p class="title is-5 mathjax"> Revolutionary Solar System Science Enabled by the Line Emission Mapper X-ray Probe </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/astro-ph?searchtype=author&query=Dunn%2C+W+R">William R. Dunn</a>, <a href="/search/astro-ph?searchtype=author&query=Koutroumpa%2C+D">Dimitra Koutroumpa</a>, <a href="/search/astro-ph?searchtype=author&query=Carter%2C+J+A">Jennifer A. Carter</a>, <a href="/search/astro-ph?searchtype=author&query=Kuntz%2C+K+D">Kip D. Kuntz</a>, <a href="/search/astro-ph?searchtype=author&query=McEntee%2C+S">Sean McEntee</a>, <a href="/search/astro-ph?searchtype=author&query=Deskins%2C+T">Thomas Deskins</a>, <a href="/search/astro-ph?searchtype=author&query=Parry%2C+B">Bryn Parry</a>, <a href="/search/astro-ph?searchtype=author&query=Wolk%2C+S">Scott Wolk</a>, <a href="/search/astro-ph?searchtype=author&query=Lisse%2C+C">Carey Lisse</a>, <a href="/search/astro-ph?searchtype=author&query=Dennerl%2C+K">Konrad Dennerl</a>, <a href="/search/astro-ph?searchtype=author&query=Jackman%2C+C+M">Caitriona M. Jackman</a>, <a href="/search/astro-ph?searchtype=author&query=Weigt%2C+D+M">Dale M. Weigt</a>, <a href="/search/astro-ph?searchtype=author&query=Porter%2C+F+S">F. Scott Porter</a>, <a href="/search/astro-ph?searchtype=author&query=Branduardi-Raymont%2C+G">Graziella Branduardi-Raymont</a>, <a href="/search/astro-ph?searchtype=author&query=Bodewits%2C+D">Dennis Bodewits</a>, <a href="/search/astro-ph?searchtype=author&query=Leppard%2C+F">Fenn Leppard</a>, <a href="/search/astro-ph?searchtype=author&query=Foster%2C+A">Adam Foster</a>, <a href="/search/astro-ph?searchtype=author&query=Gladstone%2C+G+R">G. Randall Gladstone</a>, <a href="/search/astro-ph?searchtype=author&query=Parmar%2C+V">Vatsal Parmar</a>, <a href="/search/astro-ph?searchtype=author&query=Brophy-Lee%2C+S">Stephenie Brophy-Lee</a>, <a href="/search/astro-ph?searchtype=author&query=Feldman%2C+C">Charly Feldman</a>, <a href="/search/astro-ph?searchtype=author&query=Ness%2C+J">Jan-Uwe Ness</a>, <a href="/search/astro-ph?searchtype=author&query=Cumbee%2C+R">Renata Cumbee</a>, <a href="/search/astro-ph?searchtype=author&query=Markevitch%2C+M">Maxim Markevitch</a>, <a href="/search/astro-ph?searchtype=author&query=Kraft%2C+R">Ralph Kraft</a> , et al. (5 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="2310.13873v2-abstract-short" style="display: inline;"> The Line Emission Mapper's (LEM's) exquisite spectral resolution and effective area will open new research domains in Astrophysics, Planetary Science and Heliophysics. LEM will provide step-change capabilities for the fluorescence, solar wind charge exchange (SWCX) and auroral precipitation processes that dominate X-ray emissions in our Solar System. The observatory will enable novel X-ray measure… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.13873v2-abstract-full').style.display = 'inline'; document.getElementById('2310.13873v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.13873v2-abstract-full" style="display: none;"> The Line Emission Mapper's (LEM's) exquisite spectral resolution and effective area will open new research domains in Astrophysics, Planetary Science and Heliophysics. LEM will provide step-change capabilities for the fluorescence, solar wind charge exchange (SWCX) and auroral precipitation processes that dominate X-ray emissions in our Solar System. The observatory will enable novel X-ray measurements of historically inaccessible line species, thermal broadening, characteristic line ratios and Doppler shifts - a universally valuable new astrophysics diagnostic toolkit. These measurements will identify the underlying compositions, conditions and physical processes from km-scale ultra-cold comets to the MK solar wind in the heliopause at 120 AU. Here, we focus on the paradigm-shifts LEM will provide for understanding the nature of the interaction between a star and its planets, especially the fundamental processes that govern the transfer of mass and energy within our Solar System, and the distribution of elements throughout the heliosphere. In this White Paper we show how LEM will enable a treasure trove of new scientific contributions that directly address key questions from the National Academies' 2023-2032 Planetary Science and 2013-2022 Heliophysics Decadal Strategies. The topics we highlight include: 1. The richest global trace element maps of the Lunar Surface ever produced; insights that address Solar System and planetary formation, and provide invaluable context ahead of Artemis and the Lunar Gateway. 2. Global maps of our Heliosphere through Solar Wind Charge Exchange (SWCX) that trace the interstellar neutral distributions in interplanetary space and measure system-wide solar wind ion abundances and velocities; a key new understanding of our local astrosphere and a synergistic complement to NASA IMAP observations of heliospheric interactions... <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.13873v2-abstract-full').style.display = 'none'; document.getElementById('2310.13873v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">White Paper for the Line Emission Mapper Astrophysics APEX X-ray Probe</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1808.02165">arXiv:1808.02165</a> <span> [<a href="https://arxiv.org/pdf/1808.02165">pdf</a>, <a href="https://arxiv.org/format/1808.02165">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Theory">hep-th</span> <span class="tag is-small is-grey 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="General Relativity and Quantum Cosmology">gr-qc</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/10.1088/1361-6382/aaf5e8">10.1088/1361-6382/aaf5e8 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Scalar Gravitational Radiation from Binaries: Vainshtein Mechanism in Time-dependent Systems </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/astro-ph?searchtype=author&query=Dar%2C+F">Furqan Dar</a>, <a href="/search/astro-ph?searchtype=author&query=de+Rham%2C+C">Claudia de Rham</a>, <a href="/search/astro-ph?searchtype=author&query=Deskins%2C+J+T">J. Tate Deskins</a>, <a href="/search/astro-ph?searchtype=author&query=Giblin%2C+J+T">John T. Giblin Jr.</a>, <a href="/search/astro-ph?searchtype=author&query=Tolley%2C+A+J">Andrew J. Tolley</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="1808.02165v2-abstract-short" style="display: inline;"> We develop a full four-dimensional numerical code to study scalar gravitational radiation emitted from binary systems and probe the Vainshtein mechanism in situations that break the static and spherical symmetry, relevant for binary pulsars as well as black holes and neutron stars binaries. The present study focuses on the cubic Galileon which arises as the decoupling limit of massive theories of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1808.02165v2-abstract-full').style.display = 'inline'; document.getElementById('1808.02165v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1808.02165v2-abstract-full" style="display: none;"> We develop a full four-dimensional numerical code to study scalar gravitational radiation emitted from binary systems and probe the Vainshtein mechanism in situations that break the static and spherical symmetry, relevant for binary pulsars as well as black holes and neutron stars binaries. The present study focuses on the cubic Galileon which arises as the decoupling limit of massive theories of gravity. Limitations associated with the numerical methods prevent us from reaching a physically realistic hierarchy of scales; nevertheless, within this context we observe the same power law scaling of the radiated power as previous analytic estimates, and confirm a strong suppression of the power emitted in the monopole and dipole as compared with quadrupole radiation. Following the trend to more physically realistic parameters, we confirm the suppression of the power emitted in scalar gravitational radiation and the recovery of General Relativity with good accuracy. This paves the way for future numerical work, probing more generic, physically relevant situations and sets of interactions that may exhibit the Vainshtein mechanism. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1808.02165v2-abstract-full').style.display = 'none'; document.getElementById('1808.02165v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 October, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 August, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2018. </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">27 pages, 9 figures, 1 table. Minor typos corrected and refs added</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Imperial/TP/2018/CdR/04 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1606.08462">arXiv:1606.08462</a> <span> [<a href="https://arxiv.org/pdf/1606.08462">pdf</a>, <a href="https://arxiv.org/format/1606.08462">other</a>] </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="General Relativity and Quantum Cosmology">gr-qc</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Theory">hep-th</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/10.1103/RevModPhys.89.025004">10.1103/RevModPhys.89.025004 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Graviton Mass Bounds </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/astro-ph?searchtype=author&query=de+Rham%2C+C">Claudia de Rham</a>, <a href="/search/astro-ph?searchtype=author&query=Deskins%2C+J+T">J. Tate Deskins</a>, <a href="/search/astro-ph?searchtype=author&query=Tolley%2C+A+J">Andrew J. Tolley</a>, <a href="/search/astro-ph?searchtype=author&query=Zhou%2C+S">Shuang-Yong Zhou</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="1606.08462v2-abstract-short" style="display: inline;"> Recently, aLIGO has announced the first direct detections of gravitational waves, a direct manifestation of the propagating degrees of freedom of gravity. The detected signals GW150914 and GW151226 have been used to examine the basic properties of these gravitational degrees of freedom, particularly setting an upper bound on their mass. It is timely to review what the mass of these gravitational d… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1606.08462v2-abstract-full').style.display = 'inline'; document.getElementById('1606.08462v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1606.08462v2-abstract-full" style="display: none;"> Recently, aLIGO has announced the first direct detections of gravitational waves, a direct manifestation of the propagating degrees of freedom of gravity. The detected signals GW150914 and GW151226 have been used to examine the basic properties of these gravitational degrees of freedom, particularly setting an upper bound on their mass. It is timely to review what the mass of these gravitational degrees of freedom means from the theoretical point of view, particularly taking into account the recent developments in constructing consistent massive gravity theories. Apart from the GW150914 mass bound, a few other observational bounds have been established from the effects of the Yukawa potential, modified dispersion relation and fifth force that are all induced when the fundamental gravitational degrees of freedom are massive. We review these different mass bounds and examine how they stand in the wake of recent theoretical developments and how they compare to the bound from GW150914. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1606.08462v2-abstract-full').style.display = 'none'; document.getElementById('1606.08462v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 May, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 June, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2016. </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">A review commissioned by Reviews of Modern Physics; Published in Reviews of Modern Physics</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Rev. Mod. Phys. 89 (2017), 025004 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1305.7226">arXiv:1305.7226</a> <span> [<a href="https://arxiv.org/pdf/1305.7226">pdf</a>, <a href="https://arxiv.org/ps/1305.7226">ps</a>, <a href="https://arxiv.org/format/1305.7226">other</a>] </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="High Energy Physics - Theory">hep-th</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/10.1103/PhysRevD.88.063530">10.1103/PhysRevD.88.063530 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Gauge Field Preheating at the End of Inflation </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/astro-ph?searchtype=author&query=Deskins%2C+J+T">J. Tate Deskins</a>, <a href="/search/astro-ph?searchtype=author&query=Giblin%2C+J+T">John T. Giblin Jr</a>, <a href="/search/astro-ph?searchtype=author&query=Caldwell%2C+R+R">Robert R. Caldwell</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="1305.7226v1-abstract-short" style="display: inline;"> Here we consider the possibility of preheating the Universe via the parametric amplification of a massless, U(1) abelian gauge field. We assume that the gauge field is coupled to the inflaton via a conformal factor with one free parameter. We present the results of high-resolution three-dimensional simulations of this model and show this mechanism efficiently preheats the Universe to a radiation-d… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1305.7226v1-abstract-full').style.display = 'inline'; document.getElementById('1305.7226v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1305.7226v1-abstract-full" style="display: none;"> Here we consider the possibility of preheating the Universe via the parametric amplification of a massless, U(1) abelian gauge field. We assume that the gauge field is coupled to the inflaton via a conformal factor with one free parameter. We present the results of high-resolution three-dimensional simulations of this model and show this mechanism efficiently preheats the Universe to a radiation-dominated final state. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1305.7226v1-abstract-full').style.display = 'none'; document.getElementById('1305.7226v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 May, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2013. </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">8 pages, 8 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/1207.6636">arXiv:1207.6636</a> <span> [<a href="https://arxiv.org/pdf/1207.6636">pdf</a>, <a href="https://arxiv.org/format/1207.6636">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Theory">hep-th</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"> Classical Transitions for Flux Vacua </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/astro-ph?searchtype=author&query=Deskins%2C+J+T">J. Tate Deskins</a>, <a href="/search/astro-ph?searchtype=author&query=Giblin%2C+J+T">John T. Giblin Jr.</a>, <a href="/search/astro-ph?searchtype=author&query=Yang%2C+I">I-Sheng Yang</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="1207.6636v1-abstract-short" style="display: inline;"> We present the simplest model for classical transitions in flux vacua. A complex field with a spontaneously broken U(1) symmetry is embedded in $M_2\times S_1$. We numerically construct different winding number vacua, the vortices interpolating between them, and simulate the collisions of these vortices. We show that classical transitions are generic at large boosts, independent of whether or not… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1207.6636v1-abstract-full').style.display = 'inline'; document.getElementById('1207.6636v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1207.6636v1-abstract-full" style="display: none;"> We present the simplest model for classical transitions in flux vacua. A complex field with a spontaneously broken U(1) symmetry is embedded in $M_2\times S_1$. We numerically construct different winding number vacua, the vortices interpolating between them, and simulate the collisions of these vortices. We show that classical transitions are generic at large boosts, independent of whether or not vortices miss each other in the compact $S_1$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1207.6636v1-abstract-full').style.display = 'none'; document.getElementById('1207.6636v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 July, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2012. </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">12 pages, 8 figures</span> </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> 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