Dark matter substructure modelling and sensitivity of the Cherenkov Telescope Array to Galactic dark halos

Understand

Hierarchical structure formation leads to a clumpy distribution of dark matter in the Milky Way.

• These clumps are possible targets to search for dark matter annihilation with present and future $\gamma$-ray instruments.
• Many uncertainties exist on the clump distribution, leading to disputed conclusions about the expected number of detectable clumps and the ensuing limits that can be obtained from non-detection.
• In this paper, we use the CLUMPY code to simulate thousands of skymaps for several clump distributions.