A BeppoSax view of the Centaurus Cluster
Astrophysics
2009-11-07 v1
Abstract
We present results from the analysis of a BeppoSAX observation of the Centaurus Cluster. The radial metal abundance profile shows evidence of a large enhancement in the core, where Ab 1 (sol. units). The temperature map indicates that the cluster is characterized by a gradient oriented in the NW/SE direction, with cooler gas in the NW and hotter gas in the SE (\Delta kT \sim 1 keV). In hard X-rays, where the PDS detects emission with a flux of erg/cm^2/s in the 20-200 keV band, the spectrum lies above the extrapolation of the cluster thermal emission. We discuss several possible interpretations for the hard excess finding that none is completely satisfactory.
Cite
@article{arxiv.astro-ph/0205174,
title = {A BeppoSax view of the Centaurus Cluster},
author = {S. Molendi and S. De Grandi and M. Guainazzi},
journal= {arXiv preprint arXiv:astro-ph/0205174},
year = {2009}
}
Comments
To appear in A&A