Статья

X-ray imaging-spectroscopy of Abell 1835

J. R. PetersonColumbia Department of Physics and Astrophysics Laboratory, 550 W 120th St., New York, NY 10027, USAF. PaerelsColumbia Department of Physics and Astrophysics Laboratory, 550 W 120th St., New York, NY 10027, USAJ. S. KaastraSRON Laboratory for Space Research Sorbonnelaan 2, 3584 CA Utrecht, The NetherlandsM. ArnaudCEA/DSM/DAPNIA Saclay, Service d'Astrophysique, L'Orme des Merisiers, Bât. 709, 91191 Gif-sur-Yvette, FranceT. H. ReiprichMax-Planck-Institut für extraterrestrische Physik, PO Box 1312, 85741 Garching, GermanyA. C. FabianInstitute of Astronomy, Madingley Road, Cambridge CB3 0HA, UKR. F. MushotzkyNASA/GFSC, Code 662, Greenbelt, MD, 20771, USAJ. G. JerniganSpace Sciences Laboratory, University of California, Berkeley, CA 94720, USAI. Sakelliou

2001en

ABI

Аннотация

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.

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Идентификаторы

DOI: 10.1051/0004-6361:20000021

Цитирования и источники

Цитирований: 2Использованных источников: 0

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