Remnants of Galactic Subhalos and Their Impact on Indirect Dark-Matter Searches

被引：14
|
作者：
Stref, Martin [1 ,2 ]
Lacroix, Thomas [3 ]
Lavalle, Julien [1 ,2 ]
机构：
[1] Univ Montpellier, LUPM, Pl Eugene Bataillon, F-34095 Montpellier 05, France
[2] CNRS, Pl Eugene Bataillon, F-34095 Montpellier 05, France
[3] Inst Fis Teor CA, C Nicolas Cabrera 13-15,Campus Cantoblanco UAM, Madrid 28049, Spain
来源：
GALAXIES | 2019年 / 7卷 / 02期
基金：
欧盟地平线“2020”;
关键词：
particle dark matter; subhalos; indirect searches; LARGE-SCALE STRUCTURE; SUBSTRUCTURE; ANNIHILATION; EVOLUTION; PARTICLE; DISRUPTION; HALO; ANTIPROTONS; POPULATION; CANDIDATES;
D O I：
10.3390/galaxies7020065
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Dark-matter subhalos, predicted in large numbers in the cold-dark-matter scenario, should have an impact on dark-matter-particle searches. Recent results show that tidal disruption of these objects in computer simulations is overefficient due to numerical artifacts and resolution effects. Accounting for these results, we re-estimated the subhalo abundance in the Milky Way using semianalytical techniques. In particular, we showed that the boost factor for gamma rays and cosmic-ray antiprotons is increased by roughly a factor of two.
引用
收藏
页数：17
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