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<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="High Energy Physics - Experiment">hep-ex</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/10.1142/10986">10.1142/10986 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Science with the Cherenkov Telescope Array </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Consortium%2C+T+C+T+A">The Cherenkov Telescope Array Consortium</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Acharya%2C+B+S">B. S. Acharya</a>, <a href="/search/hep-ex?searchtype=author&query=Agudo%2C+I">I. Agudo</a>, <a href="/search/hep-ex?searchtype=author&query=Samarai%2C+I+A">I. Al Samarai</a>, <a href="/search/hep-ex?searchtype=author&query=Alfaro%2C+R">R. Alfaro</a>, <a href="/search/hep-ex?searchtype=author&query=Alfaro%2C+J">J. Alfaro</a>, <a href="/search/hep-ex?searchtype=author&query=Alispach%2C+C">C. Alispach</a>, <a href="/search/hep-ex?searchtype=author&query=Batista%2C+R+A">R. Alves Batista</a>, <a href="/search/hep-ex?searchtype=author&query=Amans%2C+J+-">J. -P. Amans</a>, <a href="/search/hep-ex?searchtype=author&query=Amato%2C+E">E. Amato</a>, <a href="/search/hep-ex?searchtype=author&query=Ambrosi%2C+G">G. Ambrosi</a>, <a href="/search/hep-ex?searchtype=author&query=Antolini%2C+E">E. Antolini</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+L+A">L. A. Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Aramo%2C+C">C. Aramo</a>, <a href="/search/hep-ex?searchtype=author&query=Araya%2C+M">M. Araya</a>, <a href="/search/hep-ex?searchtype=author&query=Armstrong%2C+T">T. Armstrong</a>, <a href="/search/hep-ex?searchtype=author&query=Arqueros%2C+F">F. Arqueros</a>, <a href="/search/hep-ex?searchtype=author&query=Arrabito%2C+L">L. Arrabito</a>, <a href="/search/hep-ex?searchtype=author&query=Asano%2C+K">K. Asano</a>, <a href="/search/hep-ex?searchtype=author&query=Ashley%2C+M">M. Ashley</a>, <a href="/search/hep-ex?searchtype=author&query=Backes%2C+M">M. Backes</a>, <a href="/search/hep-ex?searchtype=author&query=Balazs%2C+C">C. Balazs</a>, <a href="/search/hep-ex?searchtype=author&query=Balbo%2C+M">M. Balbo</a>, <a href="/search/hep-ex?searchtype=author&query=Ballester%2C+O">O. Ballester</a> , et al. (558 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="1709.07997v2-abstract-short" style="display: inline;"> The Cherenkov Telescope Array, CTA, will be the major global observatory for very high energy gamma-ray astronomy over the next decade and beyond. The scientific potential of CTA is extremely broad: from understanding the role of relativistic cosmic particles to the search for dark matter. CTA is an explorer of the extreme universe, probing environments from the immediate neighbourhood of black ho… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1709.07997v2-abstract-full').style.display = 'inline'; document.getElementById('1709.07997v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1709.07997v2-abstract-full" style="display: none;"> The Cherenkov Telescope Array, CTA, will be the major global observatory for very high energy gamma-ray astronomy over the next decade and beyond. The scientific potential of CTA is extremely broad: from understanding the role of relativistic cosmic particles to the search for dark matter. CTA is an explorer of the extreme universe, probing environments from the immediate neighbourhood of black holes to cosmic voids on the largest scales. Covering a huge range in photon energy from 20 GeV to 300 TeV, CTA will improve on all aspects of performance with respect to current instruments. The observatory will operate arrays on sites in both hemispheres to provide full sky coverage and will hence maximize the potential for the rarest phenomena such as very nearby supernovae, gamma-ray bursts or gravitational wave transients. With 99 telescopes on the southern site and 19 telescopes on the northern site, flexible operation will be possible, with sub-arrays available for specific tasks. CTA will have important synergies with many of the new generation of major astronomical and astroparticle observatories. Multi-wavelength and multi-messenger approaches combining CTA data with those from other instruments will lead to a deeper understanding of the broad-band non-thermal properties of target sources. The CTA Observatory will be operated as an open, proposal-driven observatory, with all data available on a public archive after a pre-defined proprietary period. Scientists from institutions worldwide have combined together to form the CTA Consortium. This Consortium has prepared a proposal for a Core Programme of highly motivated observations. The programme, encompassing approximately 40% of the available observing time over the first ten years of CTA operation, is made up of individual Key Science Projects (KSPs), which are presented in this document. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1709.07997v2-abstract-full').style.display = 'none'; document.getElementById('1709.07997v2-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> 21 January, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 September, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2017. </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">213 pages, including references and glossary. Version 2: credits and references updated, some figures updated, and author list updated</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1610.01814">arXiv:1610.01814</a> <span> [<a href="https://arxiv.org/pdf/1610.01814">pdf</a>, <a href="https://arxiv.org/ps/1610.01814">ps</a>, <a href="https://arxiv.org/format/1610.01814">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 - Experiment">hep-ex</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="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</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/10.1088/1748-0221/11/11/P11009">10.1088/1748-0221/11/11/P11009 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Very High-Energy Gamma-Ray Follow-Up Program Using Neutrino Triggers from IceCube </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=IceCube+Collaboration"> IceCube Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aartsen%2C+M+G">M. G. Aartsen</a>, <a href="/search/hep-ex?searchtype=author&query=Abraham%2C+K">K. Abraham</a>, <a href="/search/hep-ex?searchtype=author&query=Ackermann%2C+M">M. Ackermann</a>, <a href="/search/hep-ex?searchtype=author&query=Adams%2C+J">J. Adams</a>, <a href="/search/hep-ex?searchtype=author&query=Aguilar%2C+J+A">J. A. Aguilar</a>, <a href="/search/hep-ex?searchtype=author&query=Ahlers%2C+M">M. Ahlers</a>, <a href="/search/hep-ex?searchtype=author&query=Ahrens%2C+M">M. Ahrens</a>, <a href="/search/hep-ex?searchtype=author&query=Altmann%2C+D">D. Altmann</a>, <a href="/search/hep-ex?searchtype=author&query=Andeen%2C+K">K. Andeen</a>, <a href="/search/hep-ex?searchtype=author&query=Anderson%2C+T">T. Anderson</a>, <a href="/search/hep-ex?searchtype=author&query=Ansseau%2C+I">I. Ansseau</a>, <a href="/search/hep-ex?searchtype=author&query=Anton%2C+G">G. Anton</a>, <a href="/search/hep-ex?searchtype=author&query=Archinger%2C+M">M. Archinger</a>, <a href="/search/hep-ex?searchtype=author&query=Arguelles%2C+C">C. Arguelles</a>, <a href="/search/hep-ex?searchtype=author&query=Auffenberg%2C+J">J. Auffenberg</a>, <a href="/search/hep-ex?searchtype=author&query=Axani%2C+S">S. Axani</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+X">X. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Barwick%2C+S+W">S. W. Barwick</a>, <a href="/search/hep-ex?searchtype=author&query=Baum%2C+V">V. Baum</a>, <a href="/search/hep-ex?searchtype=author&query=Bay%2C+R">R. Bay</a>, <a href="/search/hep-ex?searchtype=author&query=Beatty%2C+J+J">J. J. Beatty</a>, <a href="/search/hep-ex?searchtype=author&query=Becker-Tjus%2C+J">J. Becker-Tjus</a>, <a href="/search/hep-ex?searchtype=author&query=Becker%2C+K+-">K. -H. Becker</a>, <a href="/search/hep-ex?searchtype=author&query=BenZvi%2C+S">S. BenZvi</a> , et al. (519 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="1610.01814v3-abstract-short" style="display: inline;"> We describe and report the status of a neutrino-triggered program in IceCube that generates real-time alerts for gamma-ray follow-up observations by atmospheric-Cherenkov telescopes (MAGIC and VERITAS). While IceCube is capable of monitoring the whole sky continuously, high-energy gamma-ray telescopes have restricted fields of view and in general are unlikely to be observing a potential neutrino-f… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1610.01814v3-abstract-full').style.display = 'inline'; document.getElementById('1610.01814v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1610.01814v3-abstract-full" style="display: none;"> We describe and report the status of a neutrino-triggered program in IceCube that generates real-time alerts for gamma-ray follow-up observations by atmospheric-Cherenkov telescopes (MAGIC and VERITAS). While IceCube is capable of monitoring the whole sky continuously, high-energy gamma-ray telescopes have restricted fields of view and in general are unlikely to be observing a potential neutrino-flaring source at the time such neutrinos are recorded. The use of neutrino-triggered alerts thus aims at increasing the availability of simultaneous multi-messenger data during potential neutrino flaring activity, which can increase the discovery potential and constrain the phenomenological interpretation of the high-energy emission of selected source classes (e.g. blazars). The requirements of a fast and stable online analysis of potential neutrino signals and its operation are presented, along with first results of the program operating between 14 March 2012 and 31 December 2015. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1610.01814v3-abstract-full').style.display = 'none'; document.getElementById('1610.01814v3-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> 12 November, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 October, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">accepted for publication in JINST</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> 2016 JINST 11 P11009 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1005.5230">arXiv:1005.5230</a> <span> [<a href="https://arxiv.org/pdf/1005.5230">pdf</a>, <a href="https://arxiv.org/ps/1005.5230">ps</a>, <a href="https://arxiv.org/format/1005.5230">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 - Experiment">hep-ex</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="Atomic Physics">physics.atom-ph</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/PhysRevLett.104.241601">10.1103/PhysRevLett.104.241601 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Limits on light-speed anisotropies from Compton scattering of high-energy electrons </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Bocquet%2C+J+-">J. -P. Bocquet</a>, <a href="/search/hep-ex?searchtype=author&query=Moricciani%2C+D">D. Moricciani</a>, <a href="/search/hep-ex?searchtype=author&query=Bellini%2C+V">V. Bellini</a>, <a href="/search/hep-ex?searchtype=author&query=Beretta%2C+M">M. Beretta</a>, <a href="/search/hep-ex?searchtype=author&query=Casano%2C+L">L. Casano</a>, <a href="/search/hep-ex?searchtype=author&query=D%27Angelo%2C+A">A. D'Angelo</a>, <a href="/search/hep-ex?searchtype=author&query=Di+Salvo%2C+R">R. Di Salvo</a>, <a href="/search/hep-ex?searchtype=author&query=Fantini%2C+A">A. Fantini</a>, <a href="/search/hep-ex?searchtype=author&query=Franco%2C+D">D. Franco</a>, <a href="/search/hep-ex?searchtype=author&query=Gervino%2C+G">G. Gervino</a>, <a href="/search/hep-ex?searchtype=author&query=Ghio%2C+F">F. Ghio</a>, <a href="/search/hep-ex?searchtype=author&query=Giardina%2C+G">G. Giardina</a>, <a href="/search/hep-ex?searchtype=author&query=Girolami%2C+B">B. Girolami</a>, <a href="/search/hep-ex?searchtype=author&query=Giusa%2C+A">A. Giusa</a>, <a href="/search/hep-ex?searchtype=author&query=Gurzadyan%2C+V+G">V. G. Gurzadyan</a>, <a href="/search/hep-ex?searchtype=author&query=Kashin%2C+A">A. Kashin</a>, <a href="/search/hep-ex?searchtype=author&query=Knyazyan%2C+S">S. Knyazyan</a>, <a href="/search/hep-ex?searchtype=author&query=Lapik%2C+A">A. Lapik</a>, <a href="/search/hep-ex?searchtype=author&query=Lehnert%2C+R">R. Lehnert</a>, <a href="/search/hep-ex?searchtype=author&query=Sandri%2C+P+L">P. Levi Sandri</a>, <a href="/search/hep-ex?searchtype=author&query=Lleres%2C+A">A. Lleres</a>, <a href="/search/hep-ex?searchtype=author&query=Mammoliti%2C+F">F. Mammoliti</a>, <a href="/search/hep-ex?searchtype=author&query=Mandaglio%2C+G">G. Mandaglio</a>, <a href="/search/hep-ex?searchtype=author&query=Manganaro%2C+M">M. Manganaro</a>, <a href="/search/hep-ex?searchtype=author&query=Margarian%2C+A">A. Margarian</a> , et al. (13 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="1005.5230v2-abstract-short" style="display: inline;"> The possibility of anisotropies in the speed of light relative to the limiting speed of electrons is considered. The absence of sidereal variations in the energy of Compton-edge photons at the ESRF's GRAAL facility constrains such anisotropies representing the first non-threshold collision-kinematics study of Lorentz violation. When interpreted within the minimal Standard-Model Extension, this res… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1005.5230v2-abstract-full').style.display = 'inline'; document.getElementById('1005.5230v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1005.5230v2-abstract-full" style="display: none;"> The possibility of anisotropies in the speed of light relative to the limiting speed of electrons is considered. The absence of sidereal variations in the energy of Compton-edge photons at the ESRF's GRAAL facility constrains such anisotropies representing the first non-threshold collision-kinematics study of Lorentz violation. When interpreted within the minimal Standard-Model Extension, this result yields the two-sided limit of 1.6 x 10^{-14} at 95% confidence level on a combination of the parity-violating photon and electron coefficients kappa_{o+} and c. This new constraint provides an improvement over previous bounds by one order of magnitude. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1005.5230v2-abstract-full').style.display = 'none'; document.getElementById('1005.5230v2-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> 9 June, 2010; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 May, 2010; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2010. </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">4 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.Lett.104:241601,2010 </p> </li> </ol> <div class="is-hidden-tablet"> 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