Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2012-04-16
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
9 pages, 5 figures, A&A in press
Scientific paper
Recent X-ray observations of the supernova remnant IC443 interacting with molecular clouds have shown the presence of a new population of hard X-ray sources related to the remnant itself, which has been interpreted in terms of fast ejecta fragment propagating inside the dense environment. Prompted by these studies, we have obtained a deep {\sl XMM-Newton} observation of the supernova remnant (SNR) Kes 69, which also shows signs of shock-cloud interaction. We report on the detection of 18 hard X-ray sources in the field of Kes 69, a significant excess of the expected galactic source population in the field, spatially correlated with CO emission from the cloud in the remnant environment. The spectra of 3 of the 18 sources can be described as hard power laws with photon index <2 plus line emission associated to K-shell transitions. We discuss the two most promising scenarios for the interpretation of the sources, namely fast ejecta fragments (as in IC443) and cataclysmic variables. While most of the observational evidences are consistent with the former interpretation, we cannot rule out the latter.
Bocchino Fabrizio.
Bykov Andrei M.
Chen Yafeng
Krassilchtchikov A. M.
Levenfish K. P.
No associations
LandOfFree
A population of isolated hard X-ray sources near the supernova remnant Kes 69 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 A population of isolated hard X-ray sources near the supernova remnant Kes 69, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A population of isolated hard X-ray sources near the supernova remnant Kes 69 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-6489