1998/11/20 by Ranga‐Ram Chary, R. Chary, E. L. Wright +2
Physics and Astronomy · #Astrophysics (astro-ph) #Astrophysics and Cosmic Phenomena #Atomic and Subatomic Physics Research #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #Scientific Research and Discoveries #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9811324
5 pages, 2 figures, To appear in: Proceedings of the 3rd Stromlo Symposium, eds. B.K. Gibson, T.S. Axelrod and M.E. Putman (ASP Conf. Ser.)
arxiv created 1998/11/20 · openalex publication_date 1998/11/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present constraints on the density of halo dark matter candidates within\nthe solar circle based on the anisotropy in the high energy gamma-ray\nbackground. The known galactic components of the gamma-ray background, in\nparticular the inverse Compton component, have been estimated more accurately.\nWe find the spectrum of the residual emission, after subtracting the galactic\ncomponent is inconsistent with emission from some of the proposed dark matter\ncandidates. We derive upper limits of 108 Msun for the mass of diffuse gas\nand 3*109 pc^(-3) for the number density of primordial black holes\ncontributing to the gamma-ray background.\n