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
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.