Constraints on dark matter annihilation and decay from the isotropic gamma-ray background
Constraints on dark matter annihilation and decay from the isotropic gamma-ray background
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各向同性伽马射线背景对暗物质湮灭和衰变的约束
DOI:
10.1088/1674-1137/41/4/045104
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发表时间:
2016-02
影响因子:
3.6
通讯作者:
Peng-Fei Yin
中科院分区:
文献类型:
--
作者:
Wei Liu;Xiao-Jun Bi;Su-Jie Lin;Peng-Fei Yin
We study the constraints on dark matter (DM) annihilation/decay from the Fermi-LAT Isotropic Gamma-Ray Background (IGRB) observation. We consider the contributions from both extragalactic and galactic DM components. For DM annihilation, the evolution of extragalactic DM halos is taken into account. We find that the IGRB annihilation constraints under some DM subhalo models can be comparable to those derived from the observations of dwarf spheroidal galaxies and CMB. We also use the IGRB results to constrain the parameter regions accounting for the latest AMS-02 electron-positron anomaly. We find that the majority of DM annihilation/decay channels are strongly disfavored by the latest Fermi-LAT IGRB observation; only DM decays to μ+μ− and 4μ channels may be valid.
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影响因子:
5
作者:
M. Kawasaki;K. Kohri;K. Nakayama
通讯作者:
M. Kawasaki;K. Kohri;K. Nakayama
影响因子:
6.4
作者:
Yuan, Qiang;Yue, Bin;Bi, Xiao-Jun;Chen, Xuelei;Zhang, Xinmin
通讯作者:
Zhang, Xinmin
影响因子:
2.8
作者:
R. Bousso
通讯作者:
R. Bousso
影响因子:
4.4
作者:
C. Chen;C. Chiang;Takaaki Nomura
通讯作者:
C. Chen;C. Chiang;Takaaki Nomura
DOI:
10.1086/305152
发表时间:
1997-10
期刊:
The Astrophysical Journal
影响因子:
--
作者:
I. Moskalenko;A. Strong
通讯作者:
I. Moskalenko;A. Strong