Gamma-Ray Probes of Dark Matter Substructure

被引：1

作者：

Campbell, Sheldon ^{[1
]}

机构：

[1] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

来源：

WORKSHOP ON DARK MATTER, NEUTRINO PHYSICS AND ASTROPHYSICS CETUP 2013: VIITH INTERNATIONAL CONFERENCE ON INTERCONNECTIONS BETWEEN PARTICLE PHYSICS AND COSMOLOGY PPC 2013 | 2014年 / 1604卷

关键词：

Dark Matter; Indirect Detection; High Energy Gamma Rays; Gamma-Ray Anisotropy; COSMOLOGICAL SIMULATIONS; GALAXIES; HALO; ANNIHILATION; SATELLITES; SUBHALOES; EVOLUTION; PRESSURE; CORES;

D O I：

10.1063/1.4883408

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The substructure content of dark matter halos is interesting because it can be affected by complex galaxy physics and dark matter particle physics. However, observing the small scale structure of dark matter is a challenge. The subhalo abundance (mass function, minimum mass) and morphology (density profile, subhalo shape, subsubstructure) contain information about complex astrophysics (halo formation processes) and new exotic fundamental physics (dark matter interactions). Indirect detection of dark matter annihilation radiation (DMAR) in gamma rays may be the most direct method for observing small scale structure. I outline the ways in which gamma rays may probe halo substructure. If substructure is bountiful, it may be responsible for the eventual discovery of DMAR, for instance in galaxy clusters or the diffuse gamma-ray background. Otherwise, the observation of DMAR in places without much substructure, such as the Galactic center, would lead to strict limits on the properties of small scale structure. Properties of the gamma-ray angular power spectrum will also provide information or constraints on Milky Way halo substructure.

引用

页码：11 / 21

页数：11

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