Gamma-rays from interactions of stars with active galactic nucleus jets

We have developed a model for gamma-ray emission in jets of active galactic nuclei in which particle acceleration takes place at a shock in the relativistic jet plasma due to a massive star in the central region of the host galaxy moving through the jet. The gamma-rays are produced in a pair-Compton...

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Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society 1997-05, Vol.287 (3), p.L9-L13
Main Authors: Bednarek, W., Protheroe, R. J.
Format: Article
Language:English
Subjects:
galaxies: active
galaxies: jets
gamma-rays: theory
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Summary:We have developed a model for gamma-ray emission in jets of active galactic nuclei in which particle acceleration takes place at a shock in the relativistic jet plasma due to a massive star in the central region of the host galaxy moving through the jet. The gamma-rays are produced in a pair-Compton cascade in the radiation field of the star initiated by accelerated electrons. Our model may account for the observed GeV to TeV gamma-ray spectrum and variability of Markarian 421 and other blazars detected by the EGRET instrument on the Compton Gamma Ray Observatory.
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/287.3.L9