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首页> 外文会议>Proceedings of the 32nd International Cosmic Ray Conference >H.E.S.S. observations of the globular clusters NGC 6388 and M 15 and search for a Dark Matter signal
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H.E.S.S. observations of the globular clusters NGC 6388 and M 15 and search for a Dark Matter signal

机译：H.E.S.S.球状星团NGC 6388和M 15的观测并寻找暗物质信号

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The globular clusters NGC 6388 and M 15 have been observed by the H.E.S.S. array of Cherenkov telescopesfor a live time of 27.2 and 15.2 hr, respectively. No -ray signal is found at their nominal target position. In the primordialformation scenario, GCs are formed in a dark matter halo and dark matter could still be present in the baryon-dominatedenvironment of globular clusters. The dark matter content of NGC 6388 and M 15 is modeled taking into account theastrophysical processes that can be expected to influence the dark matter distribution during the evolution of the globularcluster: the adiabatic contraction of dark matter by baryons, the adiabatic growth of a black hole in the dark matter halo,and the kinetic heating of dark matter by stars. 95% confidence level exclusion limits on the dark matter particle velocity-weightedannihilation cross section are derived for these dark matter halos. In the TeV range, these limits reach at the10 25 cm 3 s 1 level and a few 10 24 cm 3 s 1 for NGC 6388 and M 15, respectively.
机译：H.E.S.S.观察到球状星团NGC 6388和M 15阵列的Cherenkov望远镜的实时时间分别为27.2小时和15.2小时。在其标称目标位置未找到射线信号。在原始形成的情况下，气相色谱是在暗物质的晕圈中形成的，暗物质仍可能存在于球状星团的以重子为主的环境中。对NGC 6388和M 15的暗物质含量进行建模时，考虑了预计会影响球状团簇演化过程中暗物质分布的天体物理过程：重子对暗物质的绝热收缩，黑洞的绝热生长在暗物质的光环中，以及恒星对暗物质的动力学加热。对于这些暗物质晕，得出了暗物质粒子速度加权an灭横截面的95％置信水平排除极限。在TeV范围内，对于NGC 6388和M 15，这些极限分别达到10 25 cm 3 s 1的水平和几个10 24 cm 3 s 1的水平。

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