2019MNRAS.486L..85C

Recent accurate measurements of cosmic ray electron flux by the Dark Matter Particle Explorer (DAMPE) reveal a sharp peak structure near 1.4 TeV, which is difficult to explain by standard astrophysical processes. In this Letter, we propose a simple model that the enhanced dark matter annihilation via the e⁺e^– channel and with the thermal relic annihilation cross-section around the current nearest black hole (A0620-00) can satisfactorily account for the sharp peak structure. The predicted dark matter mass is ∼1.5-3 TeV.