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Rapid Optical Flares in the Blazar OJ 287 on Intraday Timescales with TESS

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dc.contributor.author Kishore, Shubham
dc.contributor.author Gupta, Alok C.
dc.contributor.author Wiita, Paul J.
dc.date.accessioned 2024-02-07T06:55:17Z
dc.date.available 2024-02-07T06:55:17Z
dc.date.issued 2024-01
dc.identifier.uri https://doi.org/10.3847/1538-4357/ad0b80
dc.identifier.uri http://localhost:8080/xmlui/handle/123456789/1431
dc.description.abstract We have analyzed the optical light curves of the blazar OJ 287 obtained with the Transiting Exoplanet Survey Satellite over about 80 days from 2021 October 13 to December 31, with an unprecedented sampling of 2 minutes. Although significant variability has been found during the entire period, we have detected two exceptional flares with flux nearly doubling and then nearly tripling over 2 days in the middle of 2021 November. We went through the light-curve analysis using the excess variance, generalized Lomb–Scargle periodogram, and continuous autoregressive moving average methods and estimated the flux halving/doubling timescales. The most probable shortest variability timescale was found to be 0.38 days in the rising phase of the first flare. We briefly discuss some emission models for the variability in radio-loud active galactic nuclei that could be capable of producing such fast flares. en_US
dc.language.iso en en_US
dc.publisher The Astrophysical Journal en_US
dc.relation.ispartofseries 2065;apj960-11
dc.subject Blazars en_US
dc.subject Active galactic nuclei en_US
dc.subject BL Lacertae objects en_US
dc.subject Jets en_US
dc.title Rapid Optical Flares in the Blazar OJ 287 on Intraday Timescales with TESS en_US
dc.type Article en_US


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