Confinement of Cosmic Rays in Dark Matter clumps

Understand

Some part of the relic Dark Matter is distributed in small-scale clumps which survived structure formation in inflation cosmological scenario.

• The annihilation of DM inside these clumps is a strong source of stable charged particles which can have a substantial density near the clump core.
• The streaming of the annihilation products from the clump can enhance irregularities in the galactic magnetic field.
• This can produce small scale variations in diffusion coefficient affecting propagation of Cosmic Rays.