期刊
ASTROPHYSICAL JOURNAL
卷 715, 期 1, 页码 355-361出版社
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/715/1/355
关键词
acceleration of particles; galaxies: active; galaxies: individual (3C 120); galaxies: jets; radio continuum: galaxies
资金
- CONACYT [54480]
- Russian Foundation for Basic Research [09-02-01136a]
- International Max-Planck Research School for Radio and Infrared Astronomy at the Universities of Bonn a
- Cologne
- Deutscher Akademischer Austausch Dienst (DAAD)
We report a relation between radio emission in the inner jet of the Seyfert galaxy 3C 120 and optical continuum emission in this galaxy. Combining the optical variability data with multi-epoch high-resolution very long baseline interferometry observations reveals that an optical flare rises when a superluminal component emerges into the jet, and its maxima is related to the passage of such component through the location of a stationary feature at a distance of approximate to 1.3 pc from the jet origin. This indicates that a significant fraction of the optical continuum produced in 3C 120 is non-thermal, and it can ionize material in a sub-relativistic wind or outflow. We discuss implications of this finding for the ionization and structure of the broad emission line region, as well as for the use of broad emission lines for determining black hole masses in radio-loud active galactic nucleus.
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