Limits on dark matter annihilation in prompt cusps from the isotropic gamma-ray background

Autor:	Delos, M. Sten, Korsmeier, Michael, Widmark, Axel, Blanco, Carlos, Linden, Tim, White, Simon D. M.
Rok vydání:	2023
Předmět:	Astrophysics - High Energy Astrophysical Phenomena Astrophysics - Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology
Zdroj:	Phys. Rev. D 109, 083512 (2024)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.109.083512
Popis:	Recent studies indicate that thermally produced dark matter will form highly concentrated, low-mass cusps in the early universe that often survive until the present. While these cusps contain a small fraction of the dark matter, their high density significantly increases the expected gamma-ray flux from dark matter annihilation, particularly in searches of large angular regions. We utilize 14 years of Fermi-LAT data to set strong constraints on dark matter annihilation through a detailed study of the isotropic gamma-ray background, excluding with 95% confidence dark matter annihilation to $b\bar{b}$ final states for dark matter masses below 120 GeV. Comment: 13 pages, 12 figures; accepted by PRD
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2307.13023 Zobrazit plný text záznamu View this record from Arxiv