Decaying dark matter: Stacking analysis of galaxy clusters to improve on current limits

Decaying dark matter: Stacking analysis of galaxy clusters to improve on current limits
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DOI:
10.1103/physrevd.85.063517
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发表时间:
2012-03
期刊:
影响因子:
5
通讯作者:
C. Combet;D. Maurin;E. Nezri;E. Pointecouteau;J. Hinton;R. White
C. Combet;D. Maurin;E. Nezri;E. Pointecouteau;J. Hinton;R. White
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
C. Combet;D. Maurin;E. Nezri;E. Pointecouteau;J. Hinton;R. White

文献摘要

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我们表明,堆叠的方法,星系团可以提高目前的限制衰减暗物质的一个因素$\gtrsim 5-100$,相对于一个单一的源分析,全天空的仪器,如费米-LAT。基于迄今为止最大的X射线选择星系团样本(MCXC元目录),我们提供了所有的天体物理信息,特别是衰变暗物质的天体物理学术语,需要用当前的仪器进行分析。
We show that a stacking approach to galaxy clusters can improve current limits on decaying dark matter by a factor $\gtrsim 5-100$, with respect to a single source analysis, for all-sky instruments such as Fermi-LAT. Based on the largest sample of X-ray-selected galaxy clusters available to date (the MCXC meta-catalogue), we provide all the astrophysical information, in particular the astrophysical term for decaying dark matter, required to perform an analysis with current instruments.