A BeppoSax view of the Centaurus Cluster

Details A BeppoSax view of the Centaurus Cluster A BeppoSax view of the Centaurus Cluster

2002-05-13

arxiv.org/abs/astro-ph/0205174v1

Astronomy and Astrophysics

Astrophysics

To appear in A&A

Scientific paper

10.1051/0004-6361:20020696

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 $2.2 \times 10^{-11}$ 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.

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