Mirror dark matter discovered?

Abstract

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.

13 pages, 5 figures, a typo corrected

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• Evidence for Dark Matter Self-Interactions via Collisionless Shocks in Cluster Mergers
• Implications of mirror dark matter kinetic mixing for CMB anisotropies
• Mirror dark matter cosmology - predictions for $N_{eff}[CMB]$ and $N_{eff}[BBN]$
• Thin disk of co-rotating dwarfs: a fingerprint of dissipative (mirror) dark matter?
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• Phenomenological constraints on accretion of non-annihilating dark matter on the PSR B1257+12 pulsar from orbital dynamics of its planets
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• Standard Model and Graviweak Unification with (Super)Renormalizable Gravity. Part I: Visible and Invisible Sectors of the Universe
• Planck Scale Physics, Gravi-Weak Unification and the Higgs Inflation
• Dark photon portal into mirror world
• Resolution of the small scale structure issues with dissipative dark matter from multiple Standard Model sectors
• False Vacuum Higgs Inflation and the Graviweak Unification
• Degenerate Vacua of the Universe and What Comes Beyond the Standard Model
• Graviweak Unification in the Visible and Invisible Universe and Inflation from the Higgs Field False Vacuum
• Dark matter as a cancer hazard