Gamma Lines from Majorana Dark Matter

Understand

We discuss simple models which predict the existence of significant gamma-ray fluxes from dark matter annihilation.

• In this context the dark matter candidate is a Majorana fermion with velocity-suppressed tree-level annihilation into Standard Model fermions but unsuppressed annihilation into photons.
• These gamma lines can easily be distinguished from the continuum and provide a possibility to test these models.