Multi-epoch VLBA observations of 3C 66A

Abstract

We present the results of six-epoch Very Long Baseline Array (VLBA) observations of 3C~66A. The high-resolution Very Long Baseline Interferometer (VLBI) maps obtained at multi-frequency (2.3, 8.4, and 22.2 GHz) simultaneously enabled us to identify the brightest compact component with the core. We find that the spectrum of the core can be reasonably fitted by the synchrotron self-absorption model. Our VLBA maps show that the jet of 3C~66A has two bendings at about 1.2 and 4 mas from the core. We also give possible identifications of our jet components with the components in previous VLBA observations by analysing their proper motions. We find consistent differences of the position from the core in one component between different frequencies at six epochs.

10 pages, 5 figures, received 30 January 2007, accepted 22 March 2007

References in corpus (10)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• Polarimetric Observations of 15 Active Galactic Nuclei at High Frequencies: Jet Kinematics from Bimonthly Monitoring with the Very Long Baseline Array
• Multi-Epoch VLBA Observations of EGRET-Detected Quasars and BL Lac Objects: Superluminal Motion of Gamma-Ray Bright Blazars
• Orbital Motion in the Radio Galaxy 3C 66B: Evidence for a Supermassive Black Hole Binary
• Multiwavelength Observations of 3C 66A during the WEBT campaign of 2003 - 2004
• Observations of the BL Lac Object 3C 66A with STACEE
• A 5 GHz Southern Hemisphere VLBI Survey of Compact Radio SOurces - I
• A 5-GHz Southern Hemisphere VLBI Survey of Compact Radio Sources - II
• The Center of Activity in the CSS Superluminal Source 3C 138
• Quasi-simultaneous five-frequency VLBA observations of PKS 0528+134

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• Multi-epoch, multi-frequency VLBI study of the parsec-scale jet in the blazar 3C 66A
• VLBI Monitoring of the Sub-parsec-scale Jet in the Radio Galaxy 3C 66B at 22 GHz
• JD6 - The Connection between Radio Properties and High Energy Emission in AGNs
• Study for relation between direction of relativistic jet and optical polarization angle with multi-wavelength observation