Multiwavelength periodicity search in a sample of $\gamma$-ray bright blazars

Abstract

We present the results of a long-term periodicity search in a sample of $\gamma$-ray blazars within a multiwavelength context. These blazars have been selected from the Steward Observatory sample as part of its optical monitoring program between 2008 and 2018. We study 15 sources with a temporal coverage in their optical total and polarized emission sufficiently large ($>9$ years) to perform a reliable long-term periodicity analysis. We collect data from several observatories to extend the coverage, enabling the search of longer periods. In addition, data are also gathered in the high-energy ($E>100$ MeV) $\gamma$-ray band from the $\text{Fermi}$ Large Area Telescope; and in the 15-GHz radio band from the Owens Valley Radio Observatory. We identify 5 promising candidates to host quasi-periodic emission, AO 0235+164, PKS 1222+216, Mrk 501, BL Lacertae and 1ES 2344+514 with periods in one or more bands and statistical significances $\sim$3$\sigma$ after trial factor correction. AO 0235+164 shows a period of $\sim$8.2 years in the R band; PKS 1222+216 has a quasi-periodic modulation in its total and polarized optical emission of $\sim$1.6 years; Mrk 501 displays a $\sim$5-year quasi-periodicity in optical and radio wavelengths; BL Lacertae presents a period of $\sim$1.8 years in its polarized emission; and 1ES 2344+514 shows a hint of a $\sim$5.5-year period in its optical R band. We interpret these results in the framework of the most common models and scenarios, namely the presence of a binary supermassive black hole system; or geometrical effects like helical or precessing jets.

arXiv commentAccepted for publication in MNRAS

References in corpus (75)

• Unified Schemes for Radio-Loud Active Galactic Nuclei
• The Large Area Telescope on the Fermi Gamma-ray Space Telescope Mission
• The Man Behind the Curtain: X-rays Drive the UV through NIR Variability in the 2013 AGN Outburst in NGC 2617
• Fermi Large Area Telescope Fourth Source Catalog
• First Results from the Catalina Real-time Transient Survey
• Understanding the Lomb-Scargle Periodogram
• Las Cumbres Observatory Global Telescope Network
• The All-Sky Automated Survey for Supernovae (ASAS-SN) Light Curve Server v1.0
• Polarimetric Observations of 15 Active Galactic Nuclei at High Frequencies: Jet Kinematics from Bimonthly Monitoring with the Very Long Baseline Array
• Blazars in the Fermi Era: The OVRO 40-m Telescope Monitoring Program
• Fermi Large Area Telescope Bright Gamma-ray Source List
• Measuring the rotation period distribution of field M-dwarfs with Kepler
• Trial factors for the look elsewhere effect in high energy physics
• A simple test for periodic signals in red noise
• MAGIC discovery of VHE Emission from the FSRQ PKS 1222+21
• The Lick Planet Search: Detectability and Mass Thresholds
• Kinematics of Parsec-Scale Jets of Gamma-Ray Blazars at 43~GHz within the VLBA-BU-BLAZAR Program
• A simplified view of blazars: clearing the fog around long-standing selection effects
• VLBI Observations of a Complete Sample of Radio Galaxies. 10 Years Later
• Generating artificial light curves: Revisited and updated
• SMARTS optical and infrared monitoring of 12 gamma-ray bright blazars
• Blazar spectral variability as explained by a twisting inhomogeneous jet
• A Bayesian test for periodic signals in red noise
• Optical and radio variability of the BL Lac object AO 0235+16: a possible 5-6 year periodicity
• Time-correlation between the radio and gamma-ray activity in blazars and the production site of the gamma-ray emission
• On the geometrical origin of periodicity in blazar-type sources
• A method for the estimation of the significance of cross-correlations in unevenly sampled red-noise time series
• Host galaxy subtraction of TeV candidate BL Lacertae objects
• Historic Light Curve and Long-term Optical Variation of BL Lacertae 2200+420
• The awakening of BL Lacertae: observations by Fermi, Swift, and the GASP-WEBT
• Long-term optical monitoring of TeV emitting Blazars
• Quasi-periodicities at year-like timescales in Blazars
• Authenticating the Presence of a Relativistic Massive Black Hole Binary in OJ 287 Using its General Relativity Centenary Flare: Improved Orbital Parameters
• The Katzman Automatic Imaging Telescope Gamma-Ray Burst Alert System, and Observations of GRB 020813
• A model for periodic blazars
• Helical jets in blazars. Interpretation of the multifrequency long-term variability of AO 0235+16
• Quasi-Periodic Oscillations of ~ 15 minutes in the Optical Light Curve of the BL Lac S5 0716+714
• The Blazar PG 1553+113 as a Binary System of Supermassive Black Holes
• Detection of Possible Quasi-periodic Oscillations in the Long-term Optical Light Curve of the BL Lac Object OJ 287
• Kinematics of and emission from helically orbiting blobs in a relativistic magnetized jet
• Systematic search for gamma-ray periodicity in active galactic nuclei detected by the Fermi Large Area Telescope
• A multifrequency analysis of radio variability of blazars
• A 34.5 day quasi-periodic oscillation in gamma-ray emission from the blazar PKS 2247-131
• A ~4.6 h quasi-periodic oscillation in the BL Lacertae PKS 2155-304?
• The GASP-WEBT monitoring of 3C 454.3 during the 2008 optical-to-radio and gamma-ray outburst
• The Unanticipated Phenomenology of the Blazar PKS~2131$-$021: A Unique Super-Massive Black Hole Binary Candidate
• Revisiting Quasi-Periodic modulation in $\gamma$-ray Blazar PKS 2155-304 with Fermi Pass 8 data
• Gamma-ray quasi-periodicities of blazars. A cautious approach
• Multifrequency variability of the blazar AO 0235+164. The WEBT campaign in 2004-2005 and long-term SED analysis
• Quasi-periodicities of BL Lac Objects
• Gamma-ray and Optical Oscillations of 0716+714, MRK 421, and BL Lac
• Long and short term variability of seven blazars in six near-infrared/optical bands
• Lognormal variability in BL Lacertae
• Log-normal flux distribution of bright Fermi blazars
• Kink Instabilities In Relativistic Jets Can Drive Quasi-Periodic Radiation Signatures
• A $\gamma$-ray Quasi-Periodic modulation in the Blazar PKS 0301$-$243?
• Quasi-periodic behaviour in the optical and γ-ray light curves of blazars 3C 66A and B2 1633+38
• Multi-color Near Infra-red Intra-day and Short Term Variability of the Blazar S5 0716+714
• The dual nature of blazar fast variability. Space and ground observations of S5 0716+714
• Nature of Intra-night Optical Variability of BL Lacertae
• The flux distribution of individual blazars as a key to understand the dynamics of particle acceleration
• Dissecting the long-term emission behaviour of the BL Lac object Mrk 421
• The nature of optical and near-infrared variability of BL Lacertae
• The complex variability of blazars: Time-scales and periodicity analysis in S4 0954+65
• A Possible $\gamma$-ray Quasi-periodic Oscillation of $\sim$ 314 days in the Blazar OJ 287
• Quasi-Periodic Oscillations in the long term radio light curves of the blazar AO 0235+164
• Long term variability and correlation study of the blazar 3C 454.3 in radio, NIR and optical wavebands
• Short Term Flux and Colour Variations in Low-Energy Peaked Blazars
• Optical quasi-periodic oscillation of the BL Lacertae object S5 0716+714 during the faint state
• Is OJ 287 a Single Supermassive Black Hole?
• Detection of a quasi-periodic oscillation in the optical light curve of the remarkable blazar AO 0235+164
• Optical and Radio Variability of BL Lacertae
• A statistical study of the optical spectral variability in gamma-ray blazars
• Long-term optical spectroscopic variations in blazar 3C 454.3
• On the determination of log-normal flux distributions for astrophysical systems

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• Not so Swift: 20 years of multiwavelength observations of Mrk 421 and Mrk 501
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