Dark Matter Constraints from a Joint Analysis of Dwarf Spheroidal Galaxy Observations with VERITAS
| العنوان: | Dark Matter Constraints from a Joint Analysis of Dwarf Spheroidal Galaxy Observations with VERITAS |
|---|---|
| المؤلفون: | Ralph Bird, Q. Feng, Marita Krause, Martin Pohl, M. J. Lang, J. Tyler, Matteo Cerruti, J. H. Buckley, A. N. Otte, Amy Furniss, I. Telezhinsky, E. Roache, Jamie Holder, M. P. Connolly, Wystan Benbow, N. Kelley-Hoskins, P. Kaaret, Olivier Hervet, Alex Geringer-Sameth, Karlen Shahinyan, B. Zitzer, J. Grube, M. Buchovecky, G. H. Sembroski, F. Krennrich, S. McArthur, N. H. Park, David Kieda, C. B. Rulten, P. Kar, Etienne Bourbeau, T. T.Y. Lin, N. Håkansson, Henrike Fleischhack, J. V. Tucci, A. Popkow, C. A. Johnson, M. Kertzman, Sinéad M. Griffin, R. Mukherjee, P. Moriarty, S. P. Wakely, Karen Byrum, R. A. Ong, Lucy Fortson, A. Weinstein, Marcos Santander, B. Hummensky, M. K. Daniel, John L. Quinn, T. Brantseg, E. Pueschel, David A. Williams, Gordon T. Richards, P. T. Reynolds, K. Ragan, Daniel Nieto, Moritz Hütten, A. Archer, D. Staszak, S. Trepanier, Jodi Christiansen, P. Wilcox, I. Sadeh, Wei Cui, Savvas M. Koushiappas, A. W. Smith, J. P. Finley, S. Archambault, D. S. Hanna, V. Bugaev, S. O'Brien, G. Hughes |
| المصدر: | ResearcherID Physical review / D 95(8), 082001 (2017). doi:10.1103/PhysRevD.95.082001 |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | particle, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, FOS: Physical sciences, IACT, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Bottom quark, models, gamma-ray astronomy, 0103 physical sciences, ddc:530, 010303 astronomy & astrophysics, milky-way, Astrophysics::Galaxy Astrophysics, Dwarf galaxy, Physics, parameters, High Energy Astrophysical Phenomena (astro-ph.HE), Gauge boson, Annihilation, 010308 nuclear & particles physics, Astronomy, Institut für Physik und Astronomie, Dwarf spheroidal galaxy, kinematics, Weakly interacting massive particles, Astrophysics::Earth and Planetary Astrophysics, Astrophysics - High Energy Astrophysical Phenomena |
| الوصف: | We present constraints on the annihilation cross section of WIMP dark matter based on the joint statistical analysis of four dwarf galaxies with VERITAS. These results are derived from an optimized photon weighting statistical technique that improves on standard imaging atmospheric Cherenkov telescope (IACT) analyses by utilizing the spectral and spatial properties of individual photon events. We report on the results of $\sim$230 hours of observations of five dwarf galaxies and the joint statistical analysis of four of the dwarf galaxies. We find no evidence of gamma-ray emission from any individual dwarf nor in the joint analysis. The derived upper limit on the dark matter annihilation cross section from the joint analysis is $1.35\times 10^{-23} {\mathrm{ cm^3s^{-1}}}$ at 1 TeV for the bottom quark ($b\bar{b}$) final state, $2.85\times 10^{-24}{\mathrm{ cm^3s^{-1}}}$ at 1 TeV for the tau lepton ($\tau^{+}\tau^{-}$) final state and $1.32\times 10^{-25}{\mathrm{ cm^3s^{-1}}}$ at 1 TeV for the gauge boson ($\gamma\gamma$) final state. Comment: 14 pages, 9 figures, published in PRD, Ascii tables containing annihilation cross sections limits are available for download as ancillary files with readme.txt file description of limits |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79918d62ce54c4c29eb764302ae4b536 http://arxiv.org/abs/1703.04937 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....79918d62ce54c4c29eb764302ae4b536 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |