耀变体对中微子-暗物质散射的约束
高能物理 - 唯象学
2023-03-15 v2 宇宙学与河外天体物理
高能天体物理现象
摘要
IceCube 望远镜已在耀变体 TXS 0506+056 中观测到与伽马射线相符的中微子发射。来自耀变体的中微子必须穿过环绕中心黑洞的致密暗物质（DM）尖峰。对此类中微子的观测意味着对作为 DM 质量函数的中微子-DM 散射截面的新上限。若截面随能量线性增长，该约束在一系列 DM 质量范围内强于现有约束。对于恒定截面，取决于 DM 尖峰的细节，也可能给出有竞争力的界限。
引用
@article{arxiv.2209.02713,
title = {Blazar constraints on neutrino-dark matter scattering},
author = {James M. Cline and Shan Gao and Fangyi Guo and Zhongan Lin and Shiyan Liu and Matteo Puel and Phillip Todd and Tianzhuo Xiao},
journal= {arXiv preprint arXiv:2209.02713},
year = {2023}
}
备注
8 pages, 4 figures; v2: more detailed analysis accounting for neutrino oscillations, neutrino emission region, different choices of initial spectrum, additional constraints on Z' model. Modified figs. 1, 2 and 4 accordingly, and improved version with clarifications