Multiband optical–NIR variability of blazars on diverse time-scales

  title={Multiband optical–NIR variability of blazars on diverse time-scales},
  author={Aditi Agarwal and Alok C. Gupta and Rumen Bachev and Anton Strigachev and Evgeni Semkov and Paul J. Wiita and Markus Bottcher and Svetlana Boeva and Haritma Gaur and Minfeng Gu and Stoyanka Peneva and Sunay Ibryamov and U. S. Pandey},
  journal={Monthly Notices of the Royal Astronomical Society},
Tosearchforopticalvariabilityonawiderangeoftime-scales,wehavecarriedoutphotometric monitoring of two flat spectrum radio quasars, 3C 454.3 and 3C 279, plus one BL Lac, S5 0716+714, all of which have been exhibiting remarkably high activity and pronounced variability at all wavelengths. CCD magnitudes in B, V, R, and I passbands were determined for ∼7000 new optical observations from 114 nights made during 2011–2014, with an average length of ∼4 h each, at seven optical telescopes: four in… 
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