标题： 通过VERITAS对矮椭球星系的联合分析进行暗物质的间接搜索 显示英文标题

标题： An indirect search for dark matter with a combined analysis of dwarf spheroidal galaxies from VERITAS

摘要： 理解暗物质的本质和身份是物理界的一个关键目标。 在TeV尺度的暗物质粒子衰变或湮灭为标准模型粒子的情况下，最终状态中将存在能量高于100 GeV的极高能（VHE）伽马射线。 非常高能辐射成像望远镜阵列系统（VERITAS）是一个成像大气契伦科夫望远镜阵列，可以在100 GeV到> 30 TeV的能量范围内间接探测VHE伽马射线。 矮椭球星系（dSphs）是寻找暗物质的理想候选者，因为它们具有高暗物质含量、高质量与光度比，以及来自天体物理过程的低伽马射线通量。 这项研究使用了一个在17个dSphs上收集的638小时的遗留数据集，该数据集经过11年的时间构建，观测策略根据目标的暗物质含量进行了优化。 该研究涵盖了广泛的暗物质粒子质量范围，从200 GeV扩展到30 PeV。 在没有检测到信号的情况下，我们设定了暗物质速度加权湮灭截面的上限。 显示英文摘要

摘要： Understanding the nature and identity of dark matter is a key goal in the physics community. In the case that TeV-scale dark matter particles decay or annihilate into standard model particles, very-high-energy (VHE) gamma rays (greater than 100 GeV) will be present in the final state. The Very Energetic Radiation Imaging Telescope Array System (VERITAS) is an imaging atmospheric Cherenkov telescope array that can indirectly detect VHE gamma rays in an energy range of 100 GeV to > 30 TeV. Dwarf spheroidal galaxies (dSphs) are ideal candidates in the search for dark matter due to their high dark matter content, high mass-to-light ratios, and their low gamma-ray fluxes from astrophysical processes. This study uses a legacy data set of 638 hours collected on 17 dSphs, built over 11 years with an observing strategy optimized according to the dark matter content of the targets. The study addresses a broad dark matter particle mass range, extending from 200 GeV to 30 PeV. In the absence of a detection, we set the upper limits on the dark matter velocity-weighted annihilation cross section.