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Direct constraints on the dark matter self-interaction cross-section from the merging galaxy cluster 1E0657-56
M. Markevitch, A. H. Gonzalez, D. Clowe +6
We compare new maps of the hot gas, dark matter, and galaxies for 1E0657-56, a cluster with a rare, high-velocity merger occurring nearly in the plane of the sky. The X-ray observa…
Chandra Multi-wavelength Project (ChaMP). II. First Results of X-ray Source Properties
D. -W. Kim, B. J. Wilkes, P. J. Green +15
We present the first results of ChaMP X-ray source properties obtained from the initial sample of 62 observations. The data have been uniformly reduced and analyzed with techniques…
CHANDRA observations of the NGC 1550 galaxy group -- implication for the temperature and entropy profiles of 1 keV galaxy groups
M. Sun, W. Forman, A. Vikhlinin +3
We present a detailed \chandra study of the galaxy group NGC 1550. For its temperature (1.370.01 keV) and velocity dispersion ( 300 km s), the NGC 1550 group is o…
A Possible Shock Wave in the Intergalactic Medium of the Cluster of Galaxies A754
R. Krivonos, A. Vikhlinin, M. Markevitch +1
The cluster of galaxies A754 undergoes a merger of several large structural units. X-ray observations show a nonequilibrium state of the central part of the cluster, in which a clo…
The 160 Square Degree ROSAT Survey: the Revised Catalog of 201 Clusters with Spectroscopic Redshifts
C. R. Mullis, B. R. McNamara, H. Quintana +6
We present the revised catalog of galaxy clusters detected as extended X-ray sources in the 160 Square Degree ROSAT Survey, including spectroscopic redshifts and X-ray luminosities…
An Unusual Discontinuity in the X-ray Surface Brightness Profile of NGC 507: Evidence of an Abundance Gradient?
R. P. Kraft, W. R. Forman, E. Churazov +6
We present results from a 45 ks Chandra/ACIS-I observation of the nearby () NGC 507 group. The X-ray surface brightness profile of the outer region of the group is well…