Optical quasi-periodic oscillation of the BL Lacertae object S5 0716+714 during the faint state

Abstract

In order to search for the evidence of quasi-periodic oscillation (QPO) in blazar, multicolor optical observations of the BL Lacertae object S5 0716+714 were performed from 2005 to 2012. For $I$ band on March 19 2010 with low variability amplitude and low flux level, the same quasi-periodic oscillation $\simeq 50$ minutes with 99% significance levels is confirmed by ZDCF method, Lomb-Scargle method, REDFIT and fitting sinusoidal curves. The observed QPO is likely to be explained by accretion disk variability. If the observed QPO indicates an innermost stable orbital period from the accretion disk, the QPO $\simeq 50$ min corresponds to a black hole mass of $5.03\times 10^6{M}_{\odot }$ for a non-rotating Schwarzschild black hole and $3.2\times 10^7{M}_{\odot }$ for a maximally rotating Kerr black hole.

29 pages, 3 figures, 6 tables, accepted for publication in AJ

References in corpus (11)

• Periodic Oscillations in the Intra-day Optical Light Curves of the Blazar S5 0716+714
• Fermi/LAT broad emission line blazars
• Optical Intra-day Variability in Blazars
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• Multiple Wavelength Variability and Quasi-Periodic Oscillation of PMN J0948+0022
• Constraining the redshifts of TeV BL Lac objects

Cited by in corpus (3)

• Multiwavelength periodicity search in a sample of $\gamma$-ray bright blazars
• A 31.3 day Transient Quasiperiodic Oscillation in Gamma-ray Emission from Blazar S5 0716+714
• Multicolour Optical Variability Monitoring of Blazars with High Time Resolution