Multiwavelength Analysis of the Variability of the Blazar 3C 273
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY(2020)
摘要
We present multiwavelength light curves and polarimetric data of the Flat Spectrum Radio Quasar 3C 273 over 8 yr. The wavelength range of our data set extends from radio to gamma-rays. We found that the optical emission in this source is dominated by the accretion disc during the entire time-frame of study. We additionally find that in contrast with the observed behaviour in other blazars, 3C 273 does not show a correlation between the gamma-ray spectral index and the gamma-ray luminosity. Finally, we identified an anticorrelation between the 15 GHz and V-band light curves for the time-range JD(245) = 4860-5760, which we speculate is the consequence of the inner part of the accretion disc falling into the black hole, followed by the ejection of a component into the jet.
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关键词
galaxies: active,galaxies: jets,quasars: individual: 3C 273,gamma-rays: galaxies
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