Stringent constraints on the dark matter annihilation cross section from the region of the Galactic Center
作者： Dan Hooper , Chris Kelso , Farinaldo S. Queiroz
DOI: 10.1016/J.ASTROPARTPHYS.2013.04.007
关键词: Light dark matter 、 Hot dark matter 、 Baryonic dark matter 、 Galaxy rotation curve 、 Dwarf galaxy problem 、 Astrophysics 、 Dark matter halo 、 Physics 、 Dark matter 、 Scalar field dark matter 、 Astronomy
摘要: Abstract For any realistic halo profile, the Galactic Center is predicted to be brightest source of gamma-rays from dark matter annihilations. Due in large part uncertainties associated with distribution and astrophysical backgrounds, however, most commonly applied constraints on annihilation cross section have been derived other regions, such as dwarf spheroidal galaxies. In this article, we study Fermi Gamma-Ray Space Telescope data direction inner Galaxy derive stringent upper limits matter’s section. Even for very conservative case a significant ( ∼ kpc) constant-density core, normalized minimum density needed accommodate rotation curve microlensing measurements, find that constraint approximately those galaxies (which were under assumption an NFW distribution). or Einasto profiles (again, allowed density), are typically stronger than dwarfs.
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