Speaker
Chih-Liang Wu
(MIT)
Description
Self-interacting Dark Matter (SIDM) could have a number of striking observable effects, including modifications to the dark matter density on galactic and sub-galactic scales. Recent studies have revealed both ultra-compact and ultra-diffuse satellite dwarf galaxies within the Milky Way; this degree of diversity seems challenging to explain if the dark matter is collisionless and cold. I will show that tidal stripping of SIDM satellite halos naturally leads to a wider range of halo density profiles, potentially explaining these observations.
Authors
Felix Kahlhoefer
(RWTH Aachen)
Manoj Kaplinghat
(University of California Irvine)
Tracy Slatyer
Chih-Liang Wu
(MIT)
