基于 VERITAS 对矮椭球星系观测联合分析的暗物质约束
高能天体物理现象
2017-05-09 v5
摘要
我们基于 VERITAS 对四个矮星系的联合统计分析，给出了 WIMP 暗物质湮灭截面的约束。这些结果源于一种优化的光子加权统计技术，该技术通过利用单个光子事件的能谱和空间性质，改进了标准的成像大气切伦科夫望远镜（IACT）分析。我们报告了对五个矮星系约 230 小时的观测结果以及对其中四个矮星系的联合统计分析。我们没有发现任何单个矮星系或联合分析中存在伽马射线辐射的证据。联合分析推导出的暗物质湮灭截面上限，对于底夸克（）末态在 1 TeV 时为 ，对于 tau 轻子（）末态在 1 TeV 时为 ，对于规范玻色子（）末态在 1 TeV 时为 。
引用
@article{arxiv.1703.04937,
title = {Dark Matter Constraints from a Joint Analysis of Dwarf Spheroidal Galaxy Observations with VERITAS},
author = {VERITAS Collaboration and S. Archambault and A. Archer and W. Benbow and R. Bird and E. Bourbeau and T. Brantseg and M. Buchovecky and J. H. Buckley and V. Bugaev and K. Byrum and M. Cerruti and J. L. Christiansen and M. P. Connolly and W. Cui and M. K. Daniel and Q. Feng and J. P. Finley and H. Fleischhack and L. Fortson and A. Furniss and A. Geringer-Sameth and S. Griffin and J. Grube and M. Hütten and N. Håkansson and D. Hanna and O. Hervet and J. Holder and G. Hughes and C. A. Johnson and P. Kaaret and P. Kar and N. Kelley-Hoskins and M. Kertzman and D. Kieda and S. Koushiappas and M. Krause and S. Kumar and M. J. Lang and T. T. Y. Lin and S. McArthur and P. Moriarty and D. Nieto and S. O'Brien and R. A. Ong and A. N. Otte and N. Park and M. Pohl and A. Popkow and E. Pueschel and J. Quinn and K. Ragan and P. T. Reynolds and G. T. Richards and E. Roache and C. Rulten and I. Sadeh and M. Santander and G. H. Sembroski and K. Shahinyan and A. W. Smith and D. Staszak and I. Telezhinsky and S. Trépanier and J. V. Tucci and J. Tyler and S. P. Wakely and A. Weinstein and P. Wilcox and D. A. Williams and B. Zitzer},
journal= {arXiv preprint arXiv:1703.04937},
year = {2017}
}
备注
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