| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1772083 | Chinese Astronomy and Astrophysics | 2010 | 7 Pages |
Abstract
By means of the structural function analysis, we have studied the variability of the classical blazars 3C273 and 3C345 at 22 GHz & 37 GHz and in an optical waveband. Our results show that the periodicity of 3C273 is rather evident: at 22 GHz, the periods of 7.0 and 14.7 years exist; at 37 GHz, the periods of 7.2 and 14.5 years exist; and in the optical waveband, the periods of 0.7 and 8.7 years probably exist. 3C345 has a rather evident period of 8.8 years at 37 GHz, and the not very evident periods of 9.3 and 10.2 years at 22 GHz and in the optical waveband, respectively.
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