The Gamma-Ray Halo from Dark Matter Annihilations
| dc.creator | Gondolo, Paolo | |
| dc.date | 1998-07-31 | |
| dc.date.accessioned | 2026-07-07T02:27:31Z | |
| dc.date.available | 2026-07-07T02:27:31Z | |
| dc.description | A sophisticated analysis of EGRET data has found evidence for gamma-ray emission from the galactic halo. I entertain the possibility that part of the EGRET signal is due to WIMP annihilations in the halo. I show that a viable candidate with the required properties exists in a model with an extended Higgs sector. The candidate has a mass of 2--4 GeV, a relic density $Ω\sim 0.1$ (for a Hubble constant of 60 km/s/Mpc), and a scattering cross section off nucleons in the range $10^{-5}$--$10^{-1}$ pb. The model satisfies present observational and experimental constraints, and makes strict predictions on the gamma-ray spectrum of the halo emission. | |
| dc.description | 4 pages, 5 figures | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9807347 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9807347 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/12730 | |
| dc.subject | Astrophysics | |
| dc.title | The Gamma-Ray Halo from Dark Matter Annihilations | |
| dc.type | text |