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What is called the bullet cluster is a pair of colliding galaxy clusters observed at a distance of about 3.7 billion light-years?.
The bullet cluster stands out in that comparison of its distribution of visible matter and non-visible gravitating matter seems to show that the centers of mass of the two components are separating during the collision. This has famously been interpreted as a strong indirect evidence for the dark matter hypothesis.
Chiara Mastropietro, Andreas Burkert, Simulating the Bullet Cluster, Wiley Online Library (doi:10.1111/j.1365-2966.2008.13626.x)
M.Bradač, Dark Matter: Revealing the Invisible with 2 Cosmic Supercolliders the “Bullet Cluster” 1E0657-56 and MACSJ0025-1222, Nuclear Physics B - Proceedings Supplements Volume 194, October 2009, Pages 17-21 (doi:10.1016/j.nuclphysbps.2009.07.002)
Andrew Robertson, Richard Massey, Vincent Eke, What does the Bullet Cluster tell us about self-interacting dark matter? (arXiv:1605.04307)
See also
PennState Phys010: Bullet cluster
Wikipedia, Bullet cluster
Created on March 31, 2018 at 00:53:24. See the history of this page for a list of all contributions to it.