The relationship between gamma emission and radio flares in AGN.

Details The relationship between gamma emission and radio flares in AGN. The relationship between gamma emission and radio flares in AGN.

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26as..120c.491v&link_type=abstract

Astronomy and Astrophysics Supplement, v.120, p.491-494

Astronomy and Astrophysics

Astrophysics

31

Galaxies: Active, Quasars: General, Gamma Rays: Observations

Scientific paper

A comparison between Phase 1 EGRET data and Metsaehovi total flux density monitoring at 22GHz and 37GHz shows that gamma-rays are likely to be detected only in quasars with high optical polarization, and even them only during the initial stages of a high radio frequency outburst. Other types of sources, including BL Lacs, are rarely detected. There also appears to be a correlation between the radio flare strength, rapidity, and the detected gamma-ray flux. Taken together, these results indicate that gamma-rays are produced by the synchrotron self-Compton mechanism in the shocked regions of the jet, with both the relativistic electrons and the seed photons originating in the same shock far away from the core and the accretion disk.

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