Seminar detail: Self-interacting dark matter: strong or resonant interaction

Date&Time	Tue Oct 31 2023 (17:00 - 18:00)
Speaker	Ayuki Kamada
Affiliation	University of Warsaw
Title	Self-interacting dark matter: strong or resonant interaction
Abstract	According to the lack of signals in conventional dark-matter (DM) searches, gravitational probes have been attracting growing interests. Structure formation of the Universe is also a unique way to examine the possibility that dark matter has a sizable self-interaction (SIDM). Observations of DM halos in a wide range of masses, from ultra-faint dwarf galaxies to galaxy clusters, may indicate that the SIDM cross section strongly depends on the velocity. In this talk, after reviewing the current status of SIDM, we introduce two interesting possibilities, which appear to be compatible with current observations: self-interaction is very strong or resonant. We discuss the evolution of these DM halos and possible observational signatures.
Remarks	Zoom link: https://us06web.zoom.us/j/88243837655?pwd=KVpEovG2jxJlqtdbhWa3QM1nnvmDg9.1 Meeting ID: 882 4383 7655 Passcode: 292704
Slide/Video