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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