An unresolved X-ray source inside the supernova remnant RCW 86

Details An unresolved X-ray source inside the supernova remnant RCW 86 An unresolved X-ray source inside the supernova remnant RCW 86

2000-08-29

arxiv.org/abs/astro-ph/0008457v1

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures. Accepted by Astronomy and Astrophyisics

Scientific paper

We report on the discovery of an unresolved X-ray source inside the supernova remnant G315.4-2.3 (RCW 86). The source is located 7' to the Southwest of the geometrical centre and may be close to the actual explosion centre of the supernova, which makes this a candidate for the stellar remnant associated with RCW 86. However, the presence of a possible optical counterpart with $V \sim 14$ at 3" from the X-ray position and evidence for long term variability means that the source is probably an active star. A better X-ray position and better X-ray spectroscopy along with an identification of the optical source are needed to exclude the X-ray source as a neutron star candidate.

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