arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2602.06121astro-ph.HEhep-ph
收藏

利用高能天体物理中微子搜索暗物质信号:IceCube

Searching for dark matter signals with high energy astrophysical neutrinos in IceCube

University of Johannesburg(约翰内斯堡大学);Simon Fraser University(西蒙菲莎大学);TRIUMF(特利昂夫实验室);The George Washington University(乔治华盛顿大学);National Institute for Theoretical and Computational Sciences (NITheCS)(国家理论与计算科学研究所)

Khushboo Dixit, Gopolang Mohlabeng, Soebur Razzaque

AI总结:

利用IceCube数据,通过堆叠分析对暗物质-中微子散射截面进行严格限制,发现不依赖能量的截面上限为8×10⁻³⁹ cm²,线性能量依赖截面上限为10⁻³⁹ cm²。

摘要:

高能中微子为暗物质(DM)提供了潜在的强大且独特的探测手段,特别是在暗物质密度增强的环境中,如预测在活动星系核(AGN)中心形成的暗物质尖峰。IceCube中微子观测站最近发现了四个AGN,即TXS 0506+056、NGC 1068、PKS 1424+240和NGC 4151作为中微子源,为搜索这些相互作用的信号提供了独特机会。在本研究中,我们利用IceCube数据,得出迄今为止对暗物质-中微子散射截面的最严格限制,包括依赖能量和不依赖能量的截面。我们使用来自单个源的数据进行统计分析,并对所有四个源进行联合(堆叠)分析。我们的最强限制来自堆叠分析,得出对于不依赖能量的截面,上限为σ₀ ≲ 8×10⁻³⁹ cm²,对于线性能量依赖的截面,上限为σ₀ ≲ 10⁻³⁹ cm²,均在90%置信水平下,特别是在涉及黑洞渐进增长的场景中。

英文摘要:

High-energy neutrinos provide a potentially powerful and distinctive probe for dark matter (DM) - neutrino interactions, particularly in environments with enhanced DM densities, such as the DM spikes predicted to form around supermassive black holes (SMBHs) at the center of active galactic nuclei (AGN). Recent results by the IceCube Neutrino Observatory, which reported four significant AGNs, namely TXS 0506+056, NGC 1068, PKS 1424+240, and NGC 4151 as candidate neutrino sources, provide a valuable opportunity to search for signatures of these interactions. In this study, we use IceCube data to derive the most stringent constraints to date on both the energy-dependent and energy-independent DM-neutrino scattering cross-sections. We perform a statistical analysis using data from individual sources as well as a combined (stacked) analysis of all four sources. Our strongest limits arise from the stacking analysis, yielding an upper bound of $σ_{0} \lesssim 8\times 10^{-39}$ cm$^2$ for an energy-independent cross-section and $σ_{0} \lesssim 10^{-39}$ cm$^2$ for a linearly energy-dependent cross-section, both at 90$\%$ confidence level, particularly in scenarios involving the adiabatic growth of black holes.

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。

↑