Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ap%26ss.307..233b&link_type=abstract
Astrophysics and Space Science, Volume 307, Issue 1-3, pp. 233-236
Astronomy and Astrophysics
Astrophysics
Gamma-Rays: Theory, Radiation Mechanisms: Non-Thermal, X-Rays: Binaries, Stars: Winds, Outflows
Scientific paper
The recent detection of very-high-energy (GeV TeV) γ-ray emission from the Galactic black-hole candidate and microquasar LS 5039 has sparked renewed interest in jet models for the high-energy emission in those objects. In this work, we have focused on models in which the high-energy emission results from synchrotron and Compton emission by relativistic electrons in the jet (leptonic jet models). Particular attention has been paid to a possible orbital modulation of the high-energy emission due to azimuthal asymmetries caused by the presence of the companion star. Both orbital-phase dependentγγ absorption and Compton scattering of optical/UV photons from the companion star may lead to an orbital modulation of the gamma-ray emission. We make specific predictions which should be testable with refined data from HESS and the upcoming GLAST mission.
Böttcher Markus
Dermer Charles D.
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