26th International Conference on Supersymmetry and Unification of Fundamental Interactions (SUSY2018)

Core formation from self-heating dark matter

23 Jul 2018, 17:30

20m

Room C

Talk (closed) Dark Matter, Astroparticle Physics

Speaker

Xiaoyong Chu (Institute of High Energy Physics, Vienna (A))

Description

This talk introduces a novel solution to astrophysical small-scale problems, (i.e. core/cusp and too-big-to-fail) by invoking a certain class of dark matter self-annihilating processes. Such processes lead to the formation of dark matter cores at late times by considerably reducing the inner mass density of dwarf-sized halos. An important aspect of this new solution is that the semi-annihilation effects are much more prominent in dwarf-sized halos than in the more massive halos that host galaxies and clusters, even if the corresponding cross sections are the same.

Presentation materials

Self-heating DM.pdf