Dark matter annihilation in the Milky Way Galaxy:: Effects of baryonic compression -: art. no. 241301

被引：95

作者：

Prada, F ^{[1
]}

Klypin, A

Flix, J

Martínez, M

Simonneau, E

机构：

[1] CSIC, Inst Astrofis Andalucia, E-18008 Granada, Spain

[2] New Mexico State Univ, Dept Astron, Las Cruces, NM 88003 USA

[3] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain

[4] CNRS, Inst Astrophys Paris, F-75014 Paris, France

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 24期

基金：

美国国家航空航天局; 美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.93.241301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

If the dark matter (DM), which is considered to constitute most of the mass of galaxies, is made of supersymmetric particles, the central region of our Galaxy should emit gamma rays produced by their annihilation. We use detailed models of the Milky Way to make accurate estimates of continuum gamma-ray fluxes. We argue that the most important effect, which was previously neglected, is the compression of the dark matter due to the infall of baryons to the galactic center: it boosts the expected signal by a factor 1000. To illustrate this effect, we computed the expected gamma fluxes in the minimal supergravity scenario. Our models predict that the signal could be detected at high confidence levels by imaging atmospheric Cerenkov telescopes assuming that neutralinos make up most of the DM in the Universe.

引用

页数：4