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

dc.contributor.author	Roy, Abhradeep ,et.al.
dc.contributor.author	Gupta, Alok C.
dc.date.accessioned	2024-05-13T06:01:18Z
dc.date.available	2024-05-13T06:01:18Z
dc.date.issued	2022-07
dc.identifier.uri	https://doi.org/10.1093/mnras/stac1287
dc.identifier.uri	http://localhost:8080/xmlui/handle/123456789/1584
dc.description.abstract	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.	en_US
dc.language.iso	en	en_US
dc.publisher	Monthly Notices of the Royal Astronomical Society	en_US
dc.relation.ispartofseries	1879;mn513-5238
dc.subject	radiation mechanisms: non-thermal	en_US
dc.subject	quasars: general	en_US
dc.subject	quasars: individual: AO 0235+164.	en_US
dc.title	Detection of a quasi-periodic oscillation in the optical light curve of the remarkable blazar AO 0235+164	en_US
dc.type	Article	en_US