Optical quasi-periodic oscillation and color behavior of blazar PKS 2155-304

Abstract

PKS 2155-304 is a well studied BL Lac object in the southern sky. The historical optical data during different period have been collected and compiled. Light curves with a time span of 35 years have been constructed. The R-band light curve has been analyzed by means of three methods: epoch folding method, Jurkevich method and discrete correlation function (DCF) method. It is derived that there is an evident periodic component of 317 days (i.e. 0.87 yr) superposed on a long-term trend with large-amplitude variation in the light curve. The variability of this source is accompanied by a slight color variation, and the brightness and color index are correlated with each other. On the long time-scale, PKS 2155-304 exhibits a tendency of bluer-when-brighter, which means the spectrum becomes flatter when the source brightens.

arXiv comment9 pages, 4 figures. Accepted for publication in RAA (Research in Astronomy and Astrophysics)

References in corpus (24)

• An Exceptional VHE Gamma-Ray Flare of PKS 2155-304
• BL Lac Objects in the Synchrotron Proton Blazar Model
• Modeling the Emission Processes in Blazars
• SMARTS optical and infrared monitoring of 12 gamma-ray bright blazars
• Multi-colour optical monitoring of eight red blazars
• Photopolarimetric Monitoring of Blazars in the Optical and Near-Infrared Bands with the Kanata Telescope. I. Correlations between Flux, Color, and Polarization
• H.E.S.S. Observations of PKS 2155-304
• VHE Gamma Rays from PKS 2155-304
• VHE gamma-ray emission of PKS 2155-304: spectral and temporal variability
• Rapid TeV variability in Blazars as result of Jet-Star Interaction
• Multiwavelength Monitoring of the BL Lac Object PKS 2155-304 I. The IUE Campaign
• A quasi-periodic oscillation in the blazar J1359+4011
• Optical Monitoring of BL Lacertae Object S5 0716+714 with a Novel Multi-Peak Interference Filter
• A multiwavelength view of the flaring state of PKS 2155-304 in 2006
• Nearly Periodic Fluctuations in the Long Term X-ray Light Curves of the Blazars AO 0235+164 and 1ES 2321+419
• Long and short term variability of seven blazars in six near-infrared/optical bands
• The Optical Polarization Properties of X-ray Selected BL Lacertae Objects
• The optical variability of flat-spectrum radio quasars in the SDSS stripe 82 region
• Long-term optical variability of PKS 2155-304
• Multiwavelength Monitoring of the BL Lacertae Object PKS 2155-304 in May 1994. I. The Ground-Based Campaign
• Multiband optical polarimetry of the BL Lac object PKS 2155--304. Intranight and long term variability
• REM near-IR and optical multiband observations of PKS2155-304 in 2005
• High zenith angle observations of PKS 2155-304 with the MAGIC-I telescope
• B and I-band optical micro-variability observations of the BL Lac objects S5 2007+777 and 3C371

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• SDSS J0159+0105: A Radio-Quiet Quasar with a Centi-Parsec Supermassive Black Hole Binary Candidate
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• A Radio Quasi-periodic Oscillation of 176 day in the Radio-loud Narrow-line Seyfert 1 Galaxy J0849+5108
• Searching for Quasi-Periodic Modulations in $\gamma$-ray Active Galactic Nuclei
• Two Transient Quasi-periodic Oscillations in $\gamma$-Ray Emission from the Blazar S4 0954+658
• A 31.3 day Transient Quasiperiodic Oscillation in Gamma-ray Emission from Blazar S5 0716+714
• Study of correlation between optical flux and polarization variations in BL Lac objects
• Optical Spectral Variations of a Large Sample of Fermi Blazars
• Correlation between optical and $\gamma$-ray flux variations in BL Lacs
• The Cluster-Scale Environment of PKS 2155-304
• Search for X-ray Quasi-periodicity of six AGNs using Gaussian Process method
• The detection of possible $\gamma$-ray quasi-periodic modulation with $\sim$600 days from the blazar S2 0109+22
• Long-term multi-wavelength variations of Fermi blazar 3C 279
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• Optical monitoring in southern blazars. Analysis of variability and spectral colour behaviours
• About 300 days optical quasi-periodic oscillations in the long-term light curves of the blazar PKS 2155-304
• PKS 2155-304: Long-Term Optical Photometric Monitoring and Variability Analysis
• Spectral Hardening Revealed by Geometric De-boosting in the Masked Jet of PKS 2155$-$304