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Chandra Observations of NGC 4438: An Environmentally Damaged Galaxy in the Virgo Cluster
Marie E. Machacek, Christine Jones, William R. Forman
We present results from a 25 ksec CHANDRA ACIS-S observation of galaxies NGC4438 and NGC4435 in the Virgo Cluster. X-ray emission in NGC4438 is observed in a ~700 pc nuclear region…
A Flux Limited Atlas of Galaxy Cluster Temperature Maps
R. Hank Donnelly, C. Jones, W. Forman +2
An atlas of gas temperature maps is presented for a flux limited catalog of galaxy clusters. The sample of clusters is based on the Edge et al. (1990) sample, with the inclusion of…
XMM-Newton Observations of the Perseus Cluster II: Evidence for Gas Motions in the Core
E. Churazov, W. Forman, C. Jones +2
The 5-9 keV spectrum of the inner ~100 kpc of the Perseus cluster measured by XMM-Newton can be well described by an optically thin plasma emission model as predicted by the APEC c…
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 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…
Radio and X-ray observations of the jet in Centaurus A
M. J. Hardcastle, D. M. Worrall, R. P. Kraft +3
We present new, high dynamic range VLA images of the inner jet of the closest radio galaxy, Centaurus A. Over a ten-year baseline we detect apparent sub-luminal motions (v ~ 0.5c)…