2013/07/18 by G. Lamanna, C. Farnier, Lamanna, G. +8 · 2 citations
Medicine · Physics and Astronomy · #Annihilation #Astronomy #Astrophysics #Cherenkov radiation #Cosmology #Dark Matter and Cosmic Phenomena #Dark energy #Dark matter #Dwarf galaxy #Dwarf spheroidal galaxy #FOS: Physical sciences #Galaxy #High Energy Astrophysical Phenomena (astro-ph.HE) #Interacting galaxy #Luminosity #Milky Way #Particle physics #Physics #Radiation Detection and Scintillator Technologies #Radiation Therapy and Dosimetry #Sagittarius #Scalar field dark matter #Weakly interacting massive particles #astro-ph.HE
paper · pdf · doi:10.48550/arxiv.1307.4918
published in arXiv (Cornell University), 0956 (Cornell University) · In Proceedings of the 33rd International Cosmic Ray Conference (ICRC2013), Rio de Janeiro (Brazil)
arxiv created 2013/07/18 · openalex publication_date 2013/07/18 · arxiv updated 2019/08/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Dwarf spheroidal galaxies are characterized by a large measured mass-to-light ratio and are not expected to be the site of high-luminosity non-thermal high-energy gamma-ray emissions. Therefore they are among the most promising candidates for indirect searches of dark matter particle annihilation signals in gamma rays. The Sagittarius dwarf spheroidal galaxy has been regularly observed by the High Energy Stereoscopic System (H.E.S.S.) of Cherenkov telescopes for more than 90 hours, searching for TeV gamma-ray emission from annihilation of dark matter particles. In absence of a significant signal, new constraints on the annihilation crosssection of the dark matter particles applicable for Majorana Weakly Interacting Massive Particles (WIMPs) are derived.