2012/05/12 by LAT Collaboration, M. Ackermann, M. Ajello +128 · 1 citation
Physics and Astronomy · #Annihilation #Astrophysics #Astrophysics and Cosmic Phenomena #Cosmic ray #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Fermi Gamma-ray Space Telescope #Flux (metallurgy) #Gamma ray #Monochromatic color #Nuclear physics #Optics #Photon #Physics #astro-ph.CO #astro-ph.HE #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.86.022002
Accepted for publication in Physical Review D
arxiv created 2012/05/12 · openalex publication_date 2012/07/05 · arxiv updated 2015/06/05 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Dark matter particle annihilation or decay can produce monochromatic gamma-ray lines and contribute to the diffuse gamma-ray background. Flux upper limits are presented for gamma-ray spectral lines from 7 to 200 GeV and for the diffuse gamma-ray background from 4.8 GeV to 264 GeV obtained from two years of Fermi Large Area Telescope data integrated over most of the sky. We give cross-section upper limits and decay lifetime lower limits for dark matter models that produce gamma-ray lines or contribute to the diffuse spectrum, including models proposed as explanations of the PAMELA and Fermi cosmic-ray data.