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Chandra observations of the galaxy cluster A478: the interaction of hot gas and radio plasma in the core, and an improved determination of the Compton y-parameter
M. Sun, C. Jones, S. S. Murray +3
We present the results from a 42 ks \chandra ACIS observation of the galaxy cluster A478. This cluster is generally considered to be highly relaxed. The \chandra image reveals, for…
Cosmological constraints from the local X-ray luminosity function of the most X-ray luminous galaxy clusters
S. W. Allen, R. W. Schmidt, A. C. Fabian +1
We present precise constraints on the normalization of the power spectrum of mass fluctuations in the nearby universe, sigma_8, as a function of the mean local matter density, Omeg…
Exciting molecular hydrogen in the central galaxies of cooling flows
R. J. Wilman, A. C. Edge, R. M. Johnstone +3
The origin of rovibrational H_2 emission in the central galaxies of cooling flow clusters is poorly understood. Here we address this issue using data from our near-infrared spectro…
A survey of molecular hydrogen in the central galaxies of cooling flows
A. C. Edge, R. J. Wilman, R. M. Johnstone +3
We present a large sample of H- and K-band spectra of 32 optically line luminous central cluster galaxies. We find significant rovibrational H_2 emission in 23 of these galaxies as…
Cosmological constraints from the X-ray gas mass fraction in relaxed lensing clusters observed with Chandra
S. W. Allen, R. W. Schmidt, A. C. Fabian
We present precise measurements of the X-ray gas mass fraction for a sample of luminous, relatively relaxed clusters of galaxies observed with the Chandra Observatory, for which in…
Conduction and cooling flows
L. M. Voigt, R. W. Schmidt, A. C. Fabian +2
Chandra and XMM-Newton observations have confirmed the presence of large temperature gradients within the cores of many relaxed clusters of galaxies. Here we investigate whether th…