2007/01/31 by M. Sánchez‐Conde, M. A. Sanchez-Conde, F. Prada +7
Physics and Astronomy · #Annihilation #Astronomy #Astrophysics #Astrophysics and Cosmic Phenomena #Cherenkov Telescope Array #Cherenkov radiation #Dark Matter and Cosmic Phenomena #Dark matter #Detector #Galaxy #Particle physics #Particle physics theoretical and experimental studies #Physics #astro-ph
paper · pdf · doi:10.1103/physrevd.76.123509
published as Phys.Rev.D76:123509,2007 · 14 pages, 10 figures and 3 tables. Accepted for publication in Physical Review D. Minor changes with respect to the previous version after referee's comments
arxiv created 2007/10/24 · openalex publication_date 2007/12/19 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A new revision of the gamma flux that we expect to detect in imaging atmospheric Cherenkov telescopes from neutralino annihilation in the Draco dwarf spheroidal galaxy is presented in the context of the minimal supersymmetric standard models compatible with the present phenomenological and cosmological constraints, and using the dark matter density profiles compatible with the latest observations. This revision also takes into account the important effect of the point spread function of the telescope, and is valid not only for Draco but also for any other dark matter target. We show that this effect is crucial in the way we will observe and interpret a possible signal detection. Finally, we discuss the prospects to detect a possible gamma signal from Draco for current or planned gamma-ray experiments, i.e., MAGIC, GLAST, and GAW. Even with the large astrophysical and particle physics uncertainties we find that the chances to detect a neutralino annihilation signal in Draco seem to be very scarce for current experiments. However, the prospects for future imaging atmospheric Cherenkov telescopes with upgraded performances, (especially lower threshold energies and higher sensitivities) such as those offered by the Cherenkov Telescope Array project, might be substantially better.