Galaxies (Aug 2016)

The Optical Variability of the BL Lac AO 0235+164

  • Junhui Fan,
  • Omar Kurtanidze,
  • Yi Liu,
  • Xiang Liu,
  • Gotthard M. Richter,
  • Maria G. Nikolashvili,
  • Sophia O. Kurtanidze,
  • Revaz Chanishvili,
  • Hongtao Wang,
  • Mahito Sasada,
  • Aiying Zhou,
  • Chao Lin,
  • Yuhai Yuan

DOI
https://doi.org/10.3390/galaxies4030017
Journal volume & issue
Vol. 4, no. 3
p. 17

Abstract

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In this work, we present optical R band observations of AO 0235+164 carried out during the period of November 2006 to December 2012 using the Ap6E CCD camera attached to the primary focus of the 70 cm meniscus telescope at Abastumani Observatory, Georgia. It shows a large variation of Δ R = 4.88 mag (14.19–19.07 mag) and a short time scale of Δ T v = 73.5 min during our monitoring period. When periodicity analysis methods are applied to the R-band data from both historic and our observations, periods P 1 = 8.26 yr and P 2 = 0.54 yr are found.

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