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An Analysis of the Light Variations of 3C 345 and 3C 273
Chinese Astronomy and Astrophysics, 2010Abstract 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 ...
Hong-tao Wang, Jun-ying Yang
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RXTE monitoring of the blazars 3C 279 and 3C 273
Nuclear Physics B - Proceedings Supplements, 1999Abstract In blazar research the key to answering such questions as ‘What is the origin the emission mechanism of the high energy photons?’ are the time lags between different wavebands. Progress towards measuring these lags has been hampered by the difficulty of obtaining longterm high energy monitoring, but this situation changed with the launch of ...
A.J. Lawson, I.M. Mc Hardy, A.M. Newsam
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Nature of 60 mu m emission in 3C 47, 3C 207 and 3C 334
Astronomy & Astrophysics, 1998We try to explain the unusually high far-infrared emission seen by IRAS in the double-lobed radio-loud quasars 3C 47, 3C 207 and 3C 334. High resolution cm-mm observations were carried out to determine their radio core spectra, which are subsequently extrapolated to the far-infrared in order to determine the strength of the synchrotron far-infrared ...
van Bemmel, Ilse M +2 more
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