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

被引：13

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

页数：17

共 50 条

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