Search for Dark Matter Annihilation Signals in the H.E.S.S. Inner Galaxy Survey.

Search for Dark Matter Annihilation Signals in the H.E.S.S. Inner Galaxy Survey.
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在 H.E.S.S. 中寻找暗物质湮灭信号

DOI:
10.1103/physrevlett.129.111101
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发表时间:
2022
影响因子:
8.6
通讯作者:
Abdalla H
Abdalla H
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Abdalla H

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银河系的中心区域是寻找暗物质(DM)签名的最重要的位置之一。我们报告了使用来自银河系中心(GC)区域前所未有的射线调查的新观测结果搜索DM粒子湮灭信号的第一个结果,即,内星系巡天,在非常高的能量()与H.E.S.S.由五个切伦科夫地面望远镜组成的阵列。在2014-2020年数据集的搜索区域中没有发现显著的射线过量,并进行了轮廓似然比分析,以设置湮灭截面的排除限制。假设Einasto和Navarro-Frenk-白色(NFW)DM密度分布在GC,这些约束是迄今为止在TeV DM质量范围内获得的最强约束。对于Einasto剖面,湮灭通道中DM质量为1.5TeV时的约束值为,湮灭通道中DM质量为0.7TeV时的约束值为。和H.E.S.S.内星系巡天,地基射线观测,从而probevalues预期从热遗迹湮灭TeV DM粒子。
The central region of the Milky Way is one of the foremost locations to look for dark matter (DM) signatures. We report the first results on a search for DM particle annihilation signals using new observations from an unprecedented-ray survey of the Galactic Center (GC) region, i.e., the Inner Galaxy Survey, at very high energies () performed with the H.E.S.S. array of five ground-based Cherenkov telescopes. No significant-ray excess is found in the search region of the 2014–2020 dataset and a profile likelihood ratio analysis is carried out to set exclusion limits on the annihilation cross section. Assuming Einasto and Navarro-Frenk-White (NFW) DM density profiles at the GC, these constraints are the strongest obtained so far in the TeV DM mass range. For the Einasto profile, the constraints reachvalues offor 1.5 TeV DM mass in theannihilation channel, andfor 0.7 TeV DM mass in theannihilation channel. With the H.E.S.S. Inner Galaxy Survey, ground-based-ray observations thus probevalues expected from thermal-relic annihilating TeV DM particles.
利用 HAWC 寻找银河晕中的暗物质
DOI: 10.1088/1475-7516/2018/02/049
发表时间: 2018
影响因子: 6.4
作者:
Abeysekara, A.U.;Albert, A.;Alfaro, R.;Alvarez, C.;Arceo, R.;Arteaga-Velázquez, J.C.;Rojas, D. Avila;Solares, H.A. Ayala;Becerril, A.;Belmont-Moreno, E.
通讯作者: Belmont-Moreno, E.
DOI: 10.1088/1361-6471/ab2ea5
发表时间: 2019-03
期刊: Journal of Physics G: Nuclear and Particle Physics
影响因子: --
作者:
M. Schumann
通讯作者: M. Schumann