VLBI Monitoring of 3C 84 in Gamma-ray Active Phase

Details VLBI Monitoring of 3C 84 in Gamma-ray Active Phase VLBI Monitoring of 3C 84 in Gamma-ray Active Phase

2010-06-11

arxiv.org/abs/1006.2182v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Proceedings of the Workshop "Fermi meets Jansky - AGN in Radio and Gamma-Rays", Savolainen, T., Ros, E., Porcas, R.W. & Zensus

Scientific paper

We report multi-epoch Very Long Baseline Interferometry (VLBI) study of the innermost jet of 3C 84. We carried out 14-epoch VLBI observations during 2006-2009 with the Japanese VLBI Network (JVN) and the VLBI Exploration of Radio Astrometry (VERA), immediately following the radio outburst that began in 2005. Comparison between VLBI lightcurve and single-dish lightcurve indicates that the outburst was associated with the central ~1 pc core. We found that this outburst accompanied the emergence of a new component, and the projected speed of this new component was 0:23c from 2007/297 (2007 October 24) to 2009/114 (2009 April 24). We argue the site of gamma-ray emission detected by Fermi/LAT and jet kinematics in connection with gamma-ray emission mechanism.

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