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@ARTICLE{Roy:459746,
      author       = {Roy, Abhradeep and Patel, Sonal Ramesh and Sarkar, A. and
                      Chatterjee, A. and Chitnis, V. R.},
      title        = {{M}ultiwavelength {S}tudy of the {Q}uiescent {S}tates of
                      {S}ix {B}rightest {F}lat {S}pectrum {R}adio {Q}uasars
                      detected by {F}ermi-{LAT}},
      journal      = {Monthly notices of the Royal Astronomical Society},
      volume       = {504},
      number       = {1},
      issn         = {1365-2966},
      address      = {Oxford},
      publisher    = {Oxford Univ. Press},
      reportid     = {PUBDB-2021-02719, arXiv:2104.08566},
      pages        = {1103 - 1114},
      year         = {2021},
      note         = {© 2021 The Author(s) Published by Oxford University Press
                      on behalf of Royal Astronomical Society13 pages, 7 figures.
                      Accepted in MNRAS},
      abstract     = {The regular monitoring of flat-spectrum radio quasars
                      (FSRQs) in γ-rays by Fermi-LAT (Large Area Telescope) since
                      past 12 yr indicated six sources who exhibited extreme
                      γ-ray outbursts crossing daily flux of 10$^{−5}$ photons
                      cm$^{^−2}$ s$^{−1}$. We obtained nearly simultaneous
                      multiwavelength data of these sources in radio to γ-ray
                      waveband from OVRO (Owens Valley Radio Observatory), Steward
                      Observatory, SMARTS (Small and Moderate Aperture Research
                      Telescope System), Swift-UVOT (UV/Optical Telescope),
                      Swift-XRT (X-ray Telescope), and Fermi-LAT. The
                      time-averaged broad-band spectral energy distributions
                      (SEDs) of these sources in quiescent states were studied to
                      get an idea about the underlying baseline radiation
                      processes. We modelled the SEDs using one-zone leptonic
                      synchrotron and inverse Compton emission scenario from
                      broken power-law electron energy distribution inside a
                      spherical plasma blob, relativistically moving down a
                      conical jet. The model takes into account inverse Compton
                      scattering of externally and locally originated seed photons
                      in the jet. The big blue bumps visible in quiescent state
                      SEDs helped to estimate the accretion disc luminosities and
                      central black hole masses. We found a correlation between
                      the magnetic field inside the emission region and the ratio
                      of emission region distance to disc luminosity, which
                      implies that the magnetic field decreases with an increase
                      in emission region distance and decrease in disc luminosity,
                      suggesting a disc–jet connection. The high-energy index of
                      the electron distribution was also found to be correlated
                      with observed γ-ray luminosity as γ-rays are produced by
                      high-energy particles. In most cases, kinetic power carried
                      by electrons can account for jet radiation power as jets
                      become radiatively inefficient during quiescent states.},
      keywords     = {radiation mechanisms: non-thermal (autogen) / galaxies:
                      active (autogen) / galaxies: individual: 3C 273, 3C 279, 3C
                      454.3, CTA 102, PKS 1510−089, PKS B1222+216 (autogen) /
                      galaxies: jets (autogen)},
      cin          = {ZEU-CTA},
      ddc          = {520},
      cid          = {I:(DE-H253)ZEU-CTA-20120731},
      pnm          = {613 - Matter and Radiation from the Universe (POF4-613)},
      pid          = {G:(DE-HGF)POF4-613},
      experiment   = {EXP:(DE-H253)CTA-20150101 / EXP:(DE-H253)Fermi-20170101},
      typ          = {PUB:(DE-HGF)16},
      eprint       = {2104.08566},
      howpublished = {arXiv:2104.08566},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2104.08566;\%\%$},
      UT           = {WOS:000656137100079},
      doi          = {10.1093/mnras/stab975},
      url          = {https://bib-pubdb1.desy.de/record/459746},
}