Colliding clusters and dark matter self-interactions

@inproceedings{Kahlhoefer2014CollidingCA,
  title={Colliding clusters and dark matter self-interactions},
  author={Felix Kahlhoefer and Kai Schmidt-Hoberg and Mads Toudal Frandsen and Subir Sarkar},
  year={2014}
}
When a dark matter halo moves through a background of dark matter particles, self-interactions can lead to both deceleration and evaporation of the halo and thus shift its centroid relative to the collisionless stars and galaxies. We study the magnitude and time evolution of this shift for two classes of dark matter self-interactions, viz. frequent self-interactions with small momentum transfer (e.g. due to long-range interactions) and rare self-interactions with large momentum transfer (e.g… CONTINUE READING

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