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- Title
3C 66A: Variability in 2007-2015.
- Authors
Hagen-Thorn, V.; Morozova, D.; Arkharov, A.; Hagen-Thorn, E.; Troitsky, I.; Troitskaya, Yu.; Milanova, Yu.; Volkov, E.; Takalo, L.; Sillanpää, A.
- Abstract
The results of photometric ( BV RIJHK) and polarimetric ( R)monitoring of the blazar 3C 66A performed at the St. Petersburg State University and the Central AstronomicalObservatory of the Russian Academy of Sciences in 2007-2015, radio observations performed by the Boston University team with the Very Long Baseline Array at 43 GHz, and a gamma-ray light curve based on observations with the Fermi SpaceObservatory are presented. Color variations of the object are studied. Changes in the optical spectral energy distribution are observed at some times, indicating the appearance and disappearance of individual variable sources. A variable source with a degree of polarization of 36% is identified, which is responsible for the polarization variations observed during one episode. The correlations between the variations in the different spectral ranges indicate that the optical and gamma-ray radiation originates near the radio core detected at 43 GHz. The presence of five superluminal components emerging from the core is detected.
- Subjects
SUPERLUMINAL radio sources (Astronomy); SPECTRAL energy distribution; RADIO observations of artificial satellites; GAMMA ray astronomy; POLARIMETRY; PHOTOMETRY
- Publication
Astronomy Reports, 2017, Vol 61, Issue 6, p503
- ISSN
1063-7729
- Publication type
Article
- DOI
10.1134/S1063772917060051