作者: E. Charles , M. Sánchez-Conde , B. Anderson , R. Caputo , A. Cuoco
DOI: 10.1016/J.PHYSREP.2016.05.001
关键词: Light dark matter 、 Physics beyond the Standard Model 、 Axion 、 Fermi Gamma-ray Space Telescope 、 Scalar field dark matter 、 Dark matter 、 Astrophysics 、 Spitzer Space Telescope 、 Physics 、 Dwarf galaxy
摘要: The nature of dark matter is a longstanding enigma physics; it may consist particles beyond the Standard Model that are still elusive to experiments. Among indirect search techniques, which look for stable products from annihilation or decay particles, axions coupling high-energy photons, observations $\gamma$-ray sky have come prominence over last few years, because excellent sensitivity Large Area Telescope (LAT) on Fermi Gamma-ray Space mission. LAT energy range 20 MeV above 300 GeV particularly well suited searching interactions particles. In this report we describe methods used evidence with LAT, and review status searches performed up six years data. We also discuss factors determine sensitivities these searches, including magnitudes signals relevant backgrounds, considering both statistical systematic uncertainties. project expected each method 10 15 data taking. particular, find targeting dwarf galaxies, provide best limits currently, will improve faster than square root observing time. Current galaxies using reach thermal relic level masses 120 $b\bar{b}$ channel reasonable density profiles. With projected discoveries additional dwarfs, could extend about 250 GeV. as much would be sensitive annihilations at cross section greater 400 (200 GeV) in ($\tau^+ \tau^-$) channels.