X-ray imaging-spectroscopy of Abell 1835
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Open Access
- 15 January 2001
- journal article
- research article
- Published by EDP Sciences in Astronomy & Astrophysics
- Vol. 365 (1) , L104-L109
- https://doi.org/10.1051/0004-6361:20000021
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 (1046 ergs ), medium redshift (), 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 ( keV) outer envelope. We detect O VIII Lyα and two Fe XXIV complexes in the RGS spectrum. The emission measure of the cool gas below 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.Keywords
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