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Diffuse gamma rays and (p)over-bar flux from dark matter annihilation: A model for consistent results with EGRET and cosmic ray data
Bi XJ(毕效军); Zhang J(张娟); Yuan Q(袁强); Bi, XJ; Zhang, J; Yuan, Q
2008
发表期刊PHYSICAL REVIEW D
卷号78期号:4页码:43001
通讯作者[Bi, Xiao-Jun ; Zhang, Juan ; Yuan, Qiang] Chinese Acad Sci, IHEP, Key Lab Particle Astrophys, Beijing 100049, Peoples R China ; [Bi, Xiao-Jun] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
摘要In this work we develop a new propagation model for the Galactic cosmic rays based on the GALPROP code, including contributions from dark matter annihilation. Its predictions of the Galactic diffuse gamma-ray spectra are compatible with the EGRET data in all sky regions. It also gives consistent results about the diffuse gamma ray longitude and latitude distributions. The B/C, (10)Be/(9)Be, proton, electron and antiproton spectra are in agreement with cosmic ray measurements as well. In this model we have taken a universal proton spectrum throughout the Galaxy without introducing large fluctuation, considering the proton energy loss is negligible. The dark matter annihilation signals are boosted after taking the contributions from subhalos into account. Another interesting feature of this model is that it gives a better description of the diffuse gamma rays when taking the source distribution compatible with supernova remnants data, which is different from previous studies.
文章类型Article
学科领域Astronomy & Astrophysics; Physics
研究领域[WOS]Astronomy & Astrophysics ; Physics
DOI10.1103/PhysRevD.78.043001
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语种英语
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000259368500008
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被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240611
专题粒子天体物理中心
实验物理中心
作者单位中国科学院高能物理研究所
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Bi XJ,Zhang J,Yuan Q,et al. Diffuse gamma rays and (p)over-bar flux from dark matter annihilation: A model for consistent results with EGRET and cosmic ray data[J]. PHYSICAL REVIEW D,2008,78(4):43001.
APA 毕效军,张娟,袁强,Bi, XJ,Zhang, J,&Yuan, Q.(2008).Diffuse gamma rays and (p)over-bar flux from dark matter annihilation: A model for consistent results with EGRET and cosmic ray data.PHYSICAL REVIEW D,78(4),43001.
MLA 毕效军,et al."Diffuse gamma rays and (p)over-bar flux from dark matter annihilation: A model for consistent results with EGRET and cosmic ray data".PHYSICAL REVIEW D 78.4(2008):43001.
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