Monitoring of multi-frequency polarization of gamma-ray bright AGNs

Abstract

We started two observing programs with the Korean VLBI Network (KVN) monitoring changes in the flux density and polarization of relativistic jets in gamma-ray bright AGNs simultaneously at 22, 43, 86, 129 GHz. One is a single-dish weekly-observing program in dual polarization with KVN 21-m diameter radio telescopes beginning in 2011 May. The other is a VLBI monthly-observing program with the three-element VLBI network at an angular resolution range of 1.0--9.2 mas beginning in 2012 December. The monitoring observations aim to study correlation of variability in gamma-ray with that in radio flux density and polarization of relativistic jets when they flare up. These observations enable us to study the origin of the gamma-ray flares of AGNs.

4 pages, 4 figures, Proceedings of the conference "The innermost regions of relativistic jets and their magnetic fields", Granada, Spain

References in corpus (3)

• A massive binary black-hole system in OJ287 and a test of general relativity
• A change in the optical polarization associated with a gamma-ray flare in the blazar 3C 279
• Results of WEBT, VLBA and RXTE monitoring of 3C 279 during 2006-2007

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• The automatic calibration of Korean VLBI Network data
• First Detection of 350 Micron Polarization From a Radio-loud AGN
• Double SSA Spectrum and Magnetic Field Strength of the FSRQ 3C 454.3