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Title:
A Chandra observation of the disturbed cluster core of Abell 2204
Authors:
Sanders, J. S.; Fabian, A. C.; Taylor, G. B.
Affiliation:
AA(Institute of Astronomy, Madingley Road, Cambridge CB3 0HA), AB(Institute of Astronomy, Madingley Road, Cambridge CB3 0HA), AC(National Radio Astronomy Observatory, PO Box 0, Socorro, NM 87801, USA)
Publication:
Monthly Notices of the Royal Astronomical Society, Volume 356, Issue 3, pp. 1022-1028. (MNRAS Homepage)
Publication Date:
01/2005
Origin:
MNRAS
MNRAS Keywords:
galaxies: clusters: individual: Abell 2204, X-rays: galaxies
DOI:
10.1111/j.1365-2966.2004.08526.x
Bibliographic Code:
2005MNRAS.356.1022S

Abstract

We present results from an observation of the luminous cluster of galaxies Abell 2204 using the Chandra X-ray Observatory. We show the core of the cluster has a complex morphological structure, made up of a high-density core (ne~ 0.2cm-3) with flat surface brightness, a surrounding central plateau, a tail-like feature, wrapping around to the east, and an unusual radio source. A temperature map and deprojected profile shows that the temperature rises steeply outside these regions, until around ~100 kpc where it drops, then rises again. Abundance maps and profiles show that there is a corresponding increase in abundance at the same radius as where the temperature drops. In addition, there are two cold fronts at radii of ~28 and 54.5 kpc. The disturbed morphology indicates that the cluster core may have undergone a merger. However, despite this disruption, the mean radiative cooling time in the centre is short (~230 Myr) and the morphology is regular on large scales.

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