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Multiwavelength analysis of the variability of the blazar 3C 273.

Authors
  • Fernandes, S1
  • Patiño-Álvarez, V M2
  • Chavushyan, V2
  • Schlegel, E M1
  • Valdés, J R2
  • 1 Department of Physics and Astronomy, University of Texas at San Antonio, One UTSA Circle, San Antonio Texas, 78249 TX, USA.
  • 2 Instituto Nacional de Astrofísica, Óptica y Electrónica, Óptica y Electrónica, Luis Enrique Erro #1, Tonantzintla, Puebla 72840, México.
Type
Published Article
Journal
Monthly Notices of the Royal Astronomical Society
Publisher
Oxford University Press (OUP)
Publication Date
Sep 01, 2020
Volume
497
Issue
2
Pages
2066–2077
Identifiers
DOI: 10.1093/mnras/staa2013
PMID: 32778847
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

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. © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society.

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