Internal absorption of gamma-rays in relativistic blobs of active galactic nuclei

Details Internal absorption of gamma-rays in relativistic blobs of active galactic nuclei Internal absorption of gamma-rays in relativistic blobs of active galactic nuclei

2006-10-11

arxiv.org/abs/astro-ph/0610313v1

Astrophys.SpaceSci.309:105-109,2007

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures, Proc of The Multi-Messenger Approach To High-Energy Gamma-Ray Sources

Scientific paper

10.1007/s10509-007-9472-1

We investigate the production of gamma-rays in the inverse Compton (IC) scattering process by leptons accelerated inside relativistic blobs in jets of active galactic nuclei. Leptons are injected homogeneously inside the spherical blob and initiate IC $e^\pm$ pair cascade in the synchrotron radiation (produced by the same population of leptons, SSC model), provided that the optical depth for gamma-rays is larger than unity. It is shown that for likely parameters internal absorption of gamma-rays has to be important. We suggest that new type of blazars might be discovered by the future simultaneous X-ray and $\gamma$-ray observations, showing peak emissions in the hard X-rays, and in the GeV $\gamma$-rays. Moreover, the considered scenario might be also responsible for the orphan X-ray flares recently reported from BL Lac type active galaxies.

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