Constraints on light decaying dark matter candidates from 16 yr of INTEGRAL/SPI observations
Francesca Calore, Ariane Dekker, Pasquale Dario Serpico, Thomas Siegert
Abstract
ABSTRACT We apply the recently developed analysis of 16 yr of INTEGRAL/SPI data including a dark matter spatial template to derive bounds on dark matter candidates lighter than weakly interacting massive particles (like sterile neutrinos or axion-like particles) decaying into line or continuum electromagnetic final state channels. The bounds obtained are the strongest to date for dark matter masses between ∼60 keV and ∼16 MeV experiencing two-body decays producing photon lines.
Topics & Concepts
PhysicsDark matterAxionSterile neutrinoPhotonParticle physicsLight dark matterWeakly interacting massive particlesHot dark matterWarm dark matterNeutrinoScalar field dark matterAstrophysicsCosmologyQuantum mechanicsDark energyNeutrino oscillationDark Matter and Cosmic PhenomenaParticle physics theoretical and experimental studiesAstrophysics and Cosmic Phenomena