Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..360..153m&link_type=abstract
AGN Variability from X-Rays to Radio Waves ASP Conference Series, Vol. 360, Proceedings of the conference held 14-16 June, 2004
Astronomy and Astrophysics
Astrophysics
Scientific paper
The radio galaxy 3C 120 continues its pattern of low X-ray flux states preceding the appearance of superluminal knots in the radio jet. The rapid variability of the X-ray flux plus the presence of an iron line indicate that the main source of X-ray emission is the accretion disk/corona. A plausible cause of the X-ray dips is a decrease in the viscosity during episodes of enhanced poloidal magnetic field. The same condition could divert extra energy into the jet, causing a shock to propagate downstream, eventually appearing as a superluminal feature.
Jorstad Svetlana G.
Marscher Alan P.
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