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

Autor: Martin Stref, Thomas Lacroix, Julien Lavalle
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Galaxies, Vol 7, Iss 2, p 65 (2019)
Druh dokumentu: article
ISSN: 2075-4434
DOI: 10.3390/galaxies7020065
Popis: 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.
Databáze: Directory of Open Access Journals