Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-01-08
Astron.Astrophys.400:203-212,2003
Astronomy and Astrophysics
Astrophysics
10 pages, 7 figures, PS version also available at http://www.astropa.unipa.it/Library/OAPA_preprints/h3933.ps.gz
Scientific paper
10.1051/0004-6361:20021858
We present \xmm observations of hard X-ray emission from the field of IC443, a supernova remnant interacting with a molecular cloud. The hard emission from the field is dominated by 12 isolated sources having 2--10 keV flux $\ga 10^{-14}$ $\enf$. Only a fraction of the sources are expected to be extragalactic or stars on statistical grounds, while the others may be associated with the remnant. We have analyzed near-infrared K band and also DSS optical data for all of the detected sources, finding that six X-ray sources are located in a relatively small $15^\prime\times 15^\prime$ region where there is strong 2.2 $\mu {\rm m}$ infrared emission, indicating interaction with a molecular cloud. The source 1SAX J0618.0+2227, the brightest in this region (excluding the plerion), is resolved with \xmm into two sources, one of which is extended and has a hard power law spectrum photon index $\lsim$ 1.5) and shows some indications of spectral line signatures (e.g. Si), while the other is point-like and has a featureless spectrum of steeper photon index $\sim$ 2.2. Possible interpretations of some of the discrete sources in terms of interaction between the SNR and the molecular cloud are discussed.
Bocchino Fabrizio.
Bykov Andrei M.
No associations
LandOfFree
XMM-Newton study of hard X-ray sources in IC443 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with XMM-Newton study of hard X-ray sources in IC443, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and XMM-Newton study of hard X-ray sources in IC443 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-96569