Studying the Structure of the Stellar Wind in LS 5039

Details Studying the Structure of the Stellar Wind in LS 5039 Studying the Structure of the Stellar Wind in LS 5039

2009-03-03

arxiv.org/abs/0903.0539v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

6 pages, 2 figures, submitted, proceedings of High energy phenomena in massive stars, Jaen, Spain, 2-5/2/09, ASPCS

Scientific paper

The binary LS 5039 is a non-thermal X-ray emitter that presents jet-like radio structures, and is also one of the most misterious TeV sources in our Galaxy. The presence of an O-type star in LS 5039 implies that the non-thermal emitter must be embedded in a strong stellar wind, and the role of the latter could be relevant for the understanding of the high-energy behavior of the source. In this work, we show that the lack of absorption features in the soft X-ray spectrum of LS 5039 can constrain strongly the parameters that describe the wind, and ultimately the location of the non-thermal emitter.

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