Oleg Gnedin (STScI)
"Self-interacting dark matter: the rise, demise, and afterglow"


Self-interaction of dark matter particles was proposed by Spergel and Steinhardt (2000) as a way to solve two apparent CDM problems: the central density cusp and the overabundance of satellite halos. The rise of interest in this idea in the following two years resulted in its demise due to the realization that several predictions of SIDM are inconsistent with observations. Nevertheless, some interesting implications of this model are still being explored, including the core dynamics of isolated halos and the accretion onto supermassive black holes.

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