Probing Dark Matter Self-Interaction in the Sun with IceCube-PINGU

Understand

We study the capture, annihilation and evaporation of dark matter (DM) inside the Sun.

• It has been shown that the DM self-interaction can increase the DM number inside the Sun.
• We demonstrate that this enhancement becomes more significant in the regime of small DM mass, given a fixed DM self-interaction cross section.
• This leads to the enhancement of neutrino flux from DM annihilation.