| Issue |
A&A
Volume 392, Number 1, September II 2002
|
|
|---|---|---|
| Page(s) | 13 - 17 | |
| Section | Cosmology (including clusters of galaxies) | |
| DOI | https://doi.org/10.1051/0004-6361:20020696 | |
| Published online | 22 August 2002 | |
A BeppoSAX view of the Centaurus Cluster
1
Istituto di Fisica Cosmica, CNR, via Bassini 15, 20133 Milano, Italy
2
Osservatorio Astronomico di Brera, via Bianchi 46, 23807 Merate (LC), Italy
3
XMM-Newton SOC, VILSPA ESA, Apartado 50727, 28080 Madrid, Spain
Corresponding author: S. Molendi, silvano@ifctr.mi.cnr.it
Received:
4
October
2001
Accepted:
6
May
2002
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
(
keV).
In hard X-rays, where the PDS detects emission with a flux of
erg/cm2/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.
Key words: X-rays: galaxies: clusters / general: individual: Centaurus
© ESO, 2002
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