SIMBAD references

2022MNRAS.513.5238R - Mon. Not. R. Astron. Soc., 513, 5238-5244 (2022/July-2)

Detection of a quasi-periodic oscillation in the optical light curve of the remarkable blazar AO 0235+164.

ROY A., CHITNIS V.R., GUPTA A.C., WIITA P.J., ROMERO G.E., CELLONE S.A., CHATTERJEE A., COMBI J.A., RAITERI C.M., SARKAR A. and VILLATA M.

Abstract (from CDS):

We present a long term optical R band light-curve analysis of the gravitationally lensed blazar AO 0235+164 in the time span 1982-2019. Several methods of analysis lead to the result that there is a periodicity of ∼8.13 yr present in these data. In addition, each of these five major flares are apparently double-peaked, with the secondary peak following the primary one by ∼2 yr. Along with the well-known system, OJ 287, our finding constitutes one of the most secure cases of long-term quasi-periodic optical behaviour in a blazar ever found. A binary supermassive black hole system appears to provide a good explanation for these results.

Abstract Copyright: © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): radiation mechanisms: non-thermal - quasars: general - quasars: individual: AO 0235+164

Simbad objects: 2

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