The Sensitivity of the IceCube Neutrino Detector to Dark Matter Annihilating in Dwarf Galaxies - Astrophysics > Cosmology and Nongalactic AstrophysicsReportar como inadecuado




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Abstract: In this paper, we compare the relative sensitivities of gamma-ray andneutrino observations to the dark matter annihilation cross section inleptophilic models such as have been designed to explain PAMELA data. Weinvestigate whether the high energy neutrino telescope IceCube will becompetitive with current and upcoming searches by gamma-ray telescopes, such asthe Atmospheric Cerenkov Telescopes ACTs HESS, VERITAS and MAGIC, or theFermi Gamma Ray Space Telescope, in detecting or constraining dark matterparticles annihilating in dwarf spheroidal galaxies. We find that after tenyears of observation of the most promising nearby dwarfs, IceCube will havesensitivity comparable to the current sensitivity of gamma-ray telescopes onlyfor very heavy m X > 7 TeV or relatively light m X < 200 GeV dark matterparticles which annihilate primarily to mu+mu-. If dark matter particlesannihilate primarily to tau+tau-, IceCube will have superior sensitivity onlyfor dark matter particle masses below the 200 GeV threshold of current ACTs. Ifdark matter annihilations proceed directly to neutrino-antineutrino pairs asubstantial fraction of the time, IceCube will be competitive with gamma-raytelescopes for a much wider range of dark matter masses.



Autor: Pearl Sandick, Douglas Spolyar, Matthew Buckley, Katherine Freese, Dan Hooper

Fuente: https://arxiv.org/



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