The radio surroundings of the microquasar GRO J1655-40

Details The radio surroundings of the microquasar GRO J1655-40 The radio surroundings of the microquasar GRO J1655-40

2001-03-24

arxiv.org/abs/astro-ph/0103406v2

Astronomy and Astrophysics

Astrophysics

3 pages, 3 figures, to appear in A&A Letters

Scientific paper

10.1051/0004-6361:20010297

We report the results of a study of the radio surroundings of the superluminal microquasar GRO J1655-40. We have searched for extended continuum structures that might be indicative of the presence of a supernova remnant (SNR) associated with the formation of the compact object in the binary system. We also carried out HI-line observations of the region looking for a local minimum created by an explosive event. Our results indicate that there is, in fact, a bubble in the large-scale HI distribution around GRO J1655-40. We suggest that this structure might be created by the original supernova explosion occurred a few hundred thousand years ago and whose signatures can be traced by the overabundance of alpha-elements recently found by Israelian et al. (1999) in the companion star.

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