The Galaxy Cluster Abell 3581 as seen by Chandra

Details The Galaxy Cluster Abell 3581 as seen by Chandra The Galaxy Cluster Abell 3581 as seen by Chandra

2004-10-06

arxiv.org/abs/astro-ph/0410154v1

Mon.Not.Roy.Astron.Soc.356:237-246,2005

Astronomy and Astrophysics

Astrophysics

10 pages, 10 figures, accepted by MNRAS

Scientific paper

10.1111/j.1365-2966.2004.08445.x

We present results from an analysis of a Chandra observation of the cluster of galaxies Abell 3581. We discover the presence of a point-source in the central dominant galaxy which is coincident with the core of the radio source PKS 1404-267. The emission from the intracluster medium is analysed, both as seen in projection on the sky, and after correcting for projection effects, to determine the spatial distribution of gas temperature, density and metallicity. We find that the cluster, despite hosting a moderately powerful radio source, shows a temperature decline to around 0.4Tmax within the central 5 kpc. The cluster is notable for the low entropy within its core. We test and validate the xspec projct model for determining the intrinsic cluster gas properties.

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