Constraints on the Self-Interaction Cross Section of Dark Matter from Numerical Simulations of the Merging Galaxy Cluster 1E 0657–56

• Published in: The Astrophysical journal Vol. 679; no. 2; pp. 1173 - 1180
• Main Authors: Randall, Scott W, Markevitch, Maxim, Clowe, Douglas, Gonzalez, Anthony H, Bradač, Marusa
• Format: Journal Article
• Language: English
• Published: Chicago, IL IOP Publishing 01.06.2008; University of Chicago Press

We compare recent results from X-ray, strong lensing, weak lensing, and optical observations with numerical simulations of the merging galaxy cluster 1E 0657-56. X-ray observations reveal a bullet-like subcluster with a prominent bow shock, which gives an estimate for the merger velocity of 4700 km...