Dark matter self-interactions via collisionless shocks in cluster mergers

While dark matter self-interactions may solve several problems with structure formation, so far only the effects of two-body scatterings of dark matter particles have been considered. We show that, if a subdominant component of dark matter is charged under an unbroken U(1) gauge group, collective da...

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Bibliographic Details
Main Authors: Matti Heikinheimo, Martti Raidal, Christian Spethmann, Hardi Veermäe
Format: Article
Language:English
Published: Elsevier 2015-10-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269315006139