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X-ray Imaging Spectroscopy of Abell 1835

J. R. Peterson·F. B. S. Paerels·J. S. Kaastra·M. Arnaud·T. H. Reiprich·A. C. Fabian·R. F. Mushotzky·J. G. Jernigan·I. Sakelliou
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Abstract

We present detailed spatially-resolved spectroscopy results of the observation of Abell 1835 using the European Photon Imaging Cameras (EPIC) and the Reflection Grating Spectrometers (RGS) on the XMM-Newton observatory. Abell 1835 is a luminous ($10^{46}$ ergs ${s}^{-1}$), medium redshift ($z=0.2523$), X-ray emitting cluster of galaxies. The observations support the interpretation that large amounts of cool gas are present in a multi-phase medium surrounded by a hot ($kT_{e}$=8.2 keV) outer envelope. We detect O VIII Ly$α$ and two Fe XXIV complexes in the RGS spectrum. The emission measure of the cool gas below $kT_{e}$=2.7 keV is much lower than expected from standard cooling-flow models, suggesting either a more complicated cooling process than simple isobaric radiative cooling or differential cold absorption of the cooler gas.

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J. R. Peterson, F. B. S. Paerels, J. S. Kaastra, M. Arnaud, T. H. Reiprich, A. C. Fabian, R. F. Mushotzky, J. G. Jernigan, I. Sakelliou. 2000-10-31. X-ray Imaging Spectroscopy of Abell 1835. https://doi.org/10.1051/0004-6361%3A20000021

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