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arXiv 2510.03023astro-ph.HEhep-ph
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利用H.E.S.S.实验搜寻中等质量黑洞周围的暗物质

Search for dark matter around intermediate mass black holes with the H.E.S.S. experiment

Kapteyn Astronomical Institute, University of Groningen(格罗宁根大学卡普坦天文研究所);Institut für Experimentalphysik, University of Hamburg(汉堡大学实验物理研究所)

Jann Aschersleben, Dieter Horns, Emmanuel Moulin, Manuela Vecchi

AI总结:

本研究利用H.E.S.S.实验的多源观测数据搜寻中等质量黑洞周围的暗物质湮灭信号,未发现相关证据,据此对800 GeV至100 TeV质量区间暗物质的速度加权湮灭截面设定了上限,其中10-100 TeV区间的上限低于热遗迹截面。

摘要:

中等质量黑洞(IMBHs)的质量介于100倍至100万倍太阳质量之间,据假设其周围被称为暗物质尖峰的致密暗物质区域环绕,暗物质粒子在此处的湮灭可产生可探测的伽马射线。因此,探测中等质量黑洞周围的暗物质湮灭为探究暗物质的本质提供了一种很有前景的途径。在本研究中,我们利用位于纳米比亚的H.E.S.S.伽马射线实验观测到的银道面巡天、河外巡天以及一批卫星星系的数据,搜寻中等质量黑洞周围的暗物质湮灭信号。由于未发现中等质量黑洞周围暗物质湮灭产生伽马射线信号的证据,我们对质量在800 GeV至100 TeV之间的暗物质的速度加权湮灭截面设定了上限。我们的分析得到了质量在10至100 TeV之间的暗物质的速度加权湮灭截面上限,该上限低于热遗迹截面。

英文摘要:

Intermediate mass black holes (IMBHs), with masses ranging from a hundred and a million solar masses, are hypothesised to be surrounded by dense regions of dark matter known as dark matter spikes, where the annihilation of dark matter particles could produce detectable gamma rays. The detection of dark matter annihilation around IMBHs therefore offers a promising approach for probing the nature of dark matter. In this work, we search for dark matter annihilation around IMBHs using data from the Galactic Plane Survey, the Extragalactic Survey and a selection of satellite galaxies observed by the H.E.S.S. gamma-ray experiment in Namibia. Since no evidence for a gamma-ray signal from dark matter annihilation around IMBHs has been found, we set upper limits on the velocity-weighted annihilation cross section for dark matter masses between 800 GeV and 100 TeV. Our analysis obtains limits on the velocity-weighted annihilation cross section below the thermal relic cross section for dark matter masses between 10 and 100 TeV.

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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