Neutrinos from captured dark matter annihilation in a galactic population of neutron stars

Abstract

Particulate dark matter captured by a population of neutron stars distributed around the galactic center while annihilating through long-lived mediators can give rise to an observable neutrino flux. We examine the prospect of an idealised gigaton detector like IceCube/KM3NeT in probing such scenarios. Within this framework, we report an improved reach in spin-dependent and spin-independent dark matter nucleon cross-section below the current limits for dark matter masses in the TeV-PeV range.

Comments: 16 pages, 4 figures, analysis updated to include various dark matter density profiles, matches published version