Dark matter indirect signatures
نویسندگان
چکیده
منابع مشابه
Indirect Signatures of Gravitino Dark Matter
Supersymmetric models provide very interesting scenarios to account for the dark matter of the Universe. In this talk we discuss scenarios with gravitino dark matter in R-parity breaking vacua, which not only reproduce very naturally the observed dark matter relic density, but also lead to a thermal history of the Universe consistent with the observed abundances of primordial elements and the o...
متن کاملIndirect Dark Matter Signals
Dark Matter annihilation (DMA) may yield an excess of gamma rays and antimatter particles, like antiprotons and positrons, above the background from cosmic ray interactions. Several signatures, ranging from the positron excess, as observed by HEAT, AMS-01 and PAMELA, the gamma ray excess, as observed by the EGRET spectrometer, the WMAP-haze, and constraints from antiprotons, as observed by BESS...
متن کاملIndirect Search for Dark Matter
Possible dark matter candidates are reviewed as well as indirect search methods based on annihilation or decay channels of these particles. Neutralino is presently the best particle candidate and its annihilation produces high energy neutrinos, antiprotons, positrons and γ -rays. To date, only upper limits on neutrino fluxes from the center of the Earth or the Sun, were established by different...
متن کاملIndirect Evidence for Neutralinos as Dark Matter
From the relic density measurement by WMAP the WIMP annihilation cross section can be determined in a model independent way. If the WIMPS are postulated to be the neutralinos of Supersymmetry, then only a limited region of the supersymmetric parameter space matches this annihilation cross section. It is shown that the resulting positrons, antiprotons and gamma rays from the neutralino annihilat...
متن کاملIndirect Detection of Little Higgs Dark Matter
Little Higgs models with T parity contain an attractive dark matter candidate, the heavy photon. We compute the cross section of the heavy photon annihilation into Zphoton pairs, which turns out to be substantially higher than the previously computed cross section for the two photon final state. Unfortunately, even with this enhancement, the monochromatic photon flux from galactic heavy photon ...
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ژورنال
عنوان ژورنال: Comptes Rendus Physique
سال: 2012
ISSN: 1631-0705
DOI: 10.1016/j.crhy.2012.05.001