Evidence of Quasi-periodic Oscillation in the Optical Band of the Blazar 1ES 1959+650

• Published in: Research in astronomy and astrophysics Vol. 22; no. 11; pp. 115001 - 115007
• Main Authors: Dong, Fu-Tong, Gai, Ning, Tang, Yanke, Wang, Yi-Fan, Yi, Ting-Feng
• Format: Journal Article
• Language: English
• Published: Beijing National Astromonical Observatories, CAS and IOP Publishing 01.11.2022; IOP Publishing
• Subjects: Blazars; galaxies: active; galaxies: individual (1ES 1959+650); Light curve; methods: numerical; Periodicities; Quasi-Periodic Oscillations; Z transforms

We analyzed the optical monitoring data in the R band of TeV blazar 1ES 1959+650 from 2002 to 2018, and provided evidence of a quasi-periodic oscillation in this object. The light curve shows a stable and persistent periodicity at ∼540 days, detected by the Lomb–Scargle periodogram, Jurkevich and we...