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arXiv 1503.00743astro-ph.HE
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VERITAS暗物质计划

The VERITAS Dark Matter Program

B. Zitzer

摘要:

在宇宙学范式中,冷暗物质(DM)主导着宇宙的质量含量,并且存在于每个尺度上。DM的候选者包括标准模型的许多扩展,其中弱相互作用大质量粒子(WIMP)的质量范围从$\sim$ 10 GeV到大于10 TeV。在高DM密度的天体物理区域中,WIMP的自湮灭或衰变可以产生次级粒子,包括能量高达DM粒子质量的甚高能量(VHE)伽马射线。VERITAS是一个大气切伦科夫望远镜阵列,对85 GeV - 30 TeV能量范围内的VHE伽马射线敏感,已被用于DM搜索。被认为是间接DM探测候选对象的可能天体是本星系群和银河系中心的VERITAS矮球状星系(dSphs)等。本报告报告对这些目标的广泛观察和这些物体的暗物质物理学的限制,包括方法和合并DM搜索五dSphs的初步结果。

英文摘要:

In the cosmological paradigm, cold dark matter (DM) dominates the mass content of the Universe and is present at every scale. Candidates for DM include many extensions of the standard model, with a weakly interacting massive particle (WIMP) in the mass range from $\sim$10 GeV to greater than 10 TeV. The self-annihilation or decay of WIMPs in astrophysical regions of high DM density can produce secondary particles including very high energy (VHE) gamma rays with energy up to the DM particle mass. VERITAS, an array of atmospheric Cherenkov telescopes, sensitive to VHE gamma rays in the 85 GeV - 30 TeV energy range, has been utilized for DM searches. The possible astrophysical objects considered to be candidates for indirect DM detection are VERITAS dwarf spheroidal galaxies (dSphs) of the Local Group and the Galactic Center, among others. This presentation reports on our extensive observations of these targets and constraints of the dark matter physics from these objects, including the methodology and preliminary results of a combined DM search of five dSphs.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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