| Issue |
A&A
Volume 425, Number 3, October III 2004
|
|
|---|---|---|
| Page(s) | 1069 - 1074 | |
| Section | Stellar structure and evolution | |
| DOI | https://doi.org/10.1051/0004-6361:20041185 | |
| Published online | 28 September 2004 | |
γ-ray emission from microquasars: A numerical model for LSI +61°303
Departament d'Astronomia i Meteorologia, Universitat de Barcelona, Av. Diagonal 647, 08028 Barcelona, Spain e-mail: vbosch@am.ub.es; jmparedes@ub.edu
Received:
29
April
2004
Accepted:
24
June
2004
We explore the possible association between the microquasar LSI +61°303 and the EGRET source 2CG 135+01/3EG J0241+6103 by studying, with a detailed numerical model, whether this system can produce the emission and the variability detected by EGRET (>100 MeV) through inverse Compton (IC) scattering. Our numerical approach considers a population of relativistic electrons entrained in a cylindrical inhomogeneous jet, interacting with both the radiation and the magnetic fields, taking into account the Thomson and Klein-Nishina regimes of interaction. Our results reproduce the observed spectral characteristics and variability at γ-rays, thus strengthening the identification of LSI +61°303 as a high-energy γ-ray source.
Key words: X-rays: binaries / stars: individual: LSI +61°303 / gamma-rays: observations / gamma-rays: theory
© ESO, 2004
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