Search results for "DARK-MATTER ANNIHILATION"

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Shining primordial black holes

2021

We study the well-motivated mixed dark matter (DM) scenario composed of a dominant thermal WIMP, highlighting the case of $SU(2)_L$ triplet fermion "winos", with a small fraction of primordial black holes (PBHs). After the wino kinetic decoupling, the DM particles are captured by PBHs leading to the presence of PBHs with dark minihalos in the Milky Way today. The strongest constraints for the wino DM come from the production of narrow line gamma rays from wino annihilation in the Galactic Center. We analyse in detail the viability of the mixed wino DM scenario, and determine the constraints on the fraction of DM in PBHs assuming a cored halo profile in the Milky Way. We show that already wi…

Cosmology and Nongalactic Astrophysics (astro-ph.CO)Milky WayAstrophysics::High Energy Astrophysical PhenomenaastrofysiikkaDARK-MATTER ANNIHILATIONFOS: Physical sciencesmustat aukotPrimordial black holeAstrophysicsGeneral Relativity and Quantum Cosmology (gr-qc)Astrophysics::Cosmology and Extragalactic Astrophysicskosmologia7. Clean energy01 natural sciences114 Physical sciencesGeneral Relativity and Quantum Cosmologypimeä aineHigh Energy Physics - Phenomenology (hep-ph)WIMP0103 physical sciences010306 general physicsAstrophysics::Galaxy AstrophysicsPhysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)Annihilation010308 nuclear & particles physicsGalactic CenterGAMMA-RAYSCONSTRAINTSFermionHigh Energy Physics - PhenomenologyMixed dark matterMILKYHaloAstrophysics - High Energy Astrophysical PhenomenaAstrophysics - Cosmology and Nongalactic Astrophysics
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