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Radio variability of blazars

Published online by Cambridge University Press:  24 February 2011

J. H. Fan ,
W. Xu ,
J. Pan  and
Y. H. Yuan
J. H. Fan
Affiliation:
Center for Astrophysics, Guangzhou University, Guangzhou 510006, China email: jhfan_cn@yahoo.com.cn Astronomy Science and Technology Research Laboratory of Department of Education of Guangdong Province, Guangzhou 510006, China
W. Xu
Affiliation:
Center for Astrophysics, Guangzhou University, Guangzhou 510006, China email: jhfan_cn@yahoo.com.cn Astronomy Science and Technology Research Laboratory of Department of Education of Guangdong Province, Guangzhou 510006, China
J. Pan
Affiliation:
Center for Astrophysics, Guangzhou University, Guangzhou 510006, China email: jhfan_cn@yahoo.com.cn Astronomy Science and Technology Research Laboratory of Department of Education of Guangdong Province, Guangzhou 510006, China
Y. H. Yuan
Affiliation:
Center for Astrophysics, Guangzhou University, Guangzhou 510006, China email: jhfan_cn@yahoo.com.cn Astronomy Science and Technology Research Laboratory of Department of Education of Guangdong Province, Guangzhou 510006, China
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Abstract

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In this work, we present the analysis results using UMRAO preliminary data base. We used the light curves 1) to get the shortest timescales and then to get the brightness temperature so that we can estimate the Doppler factors; 2) to investigate the periodicity and discuss the variability index. We also used the data base to discuss the polarization properties of blazars. We found that the periodicity distribution in BL Lacs and that in the flat spectrum radio quasars should be from the same distribution. The Doppler factor in FSRQs is higher than that in BL. The polarization in BLs are higher than that in the flat spectrum radio quasars

Keywords

galaxies: nuclei-galaxies: jets-radio continuum: galaxies
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S275: Jets at all Scales , September 2010 , pp. 164 - 167
Copyright
Copyright © International Astronomical Union 2011

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