Mirror dark matter discovered?

Details Mirror dark matter discovered? Mirror dark matter discovered?

2008-08-19

arxiv.org/abs/0808.2595v2

ICFAI U.J.Phys.2:143-154,2009

Astronomy and Astrophysics

Astrophysics

13 pages, 5 figures, a typo corrected

Scientific paper

Recent astrophysical data indicates that dark matter shows a controversial behaviour in galaxy cluster collisions. In case of the notorious Bullet cluster, dark matter component of the cluster behaves like a collisionless system. However, its behaviour in the Abell 520 cluster indicates a significant self-interaction cross-section. It is hard for the WIMP based dark matter models to reconcile such a diverse behaviour. Mirror dark matter models, on the contrary, are more flexible and for them diverse behaviour of the dark matter is a natural expectation.

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