Optical Monitoring and Long-term Optical Spectral Variability of BL Lacertae Object S5 0716+714

Abstract

We present photometric observations of the BL Lacertae object S5 0716+714 with a temporal resolution of 120 s in the Sloan i' and r' bands. These observations were conducted using the Comet Search Program telescope at Xingming Observatory from 2018 December 22 to 2020 February 15, and more than 5600 effective images were obtained on each filter across 79 nights. Additionally, we compiled long-term variability data spanning 34 yr in the optical UBVRI bands. Using the power-enhanced F-test and nested ANOVA test, we found intraday variability (IDV) on 31 nights and possible IDV on 20 nights in the i' band. Similarly, IDV was detected on 35 nights in the r' band, while possible IDV was observed on 22 nights. The minimum variability timescale is 7.33 minutes, and the estimated black hole masses are (0.68- 5.12)*10^8 Msun. The spectral variability and long-term optical light curves reveal a bluer-when-brighter trend on intraday timescales. The long-term optical flux density and spectral index exhibit periodic variability with a timescale of about 1038 days. An anticorrelation between optical flux and spectral index was observed, with a time delay of -140 days. Variability across different optical bands exhibited a strong correlation, with no discernible time lag. From the IDV, spectral variability, correlation, and time delays between different bands, we conclude that these radiation characteristics may result from the shock-in-jet model scenario.

arXiv comment30 pages, 14 figures

References in corpus (95)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• Unified Schemes for Radio-Loud Active Galactic Nuclei
• A Unifying View of the Spectral Energy Distributions of Blazars
• The Spectral Energy Distribution of Fermi bright blazars
• A theoretical unifying scheme for gamma-ray bright blazars
• Leptonic and Hadronic Modeling of Fermi-Detected Blazars
• The Connection between X-ray- and Radio-Selected BL Lacertae Objects
• General physical properties of bright Fermi blazars
• Doppler factors, Lorentz factors and viewing angles for quasars, BL Lacertae objects and radio galaxies
• Kinematics of Parsec-Scale Jets of Gamma-Ray Blazars at 43~GHz within the VLBA-BU-BLAZAR Program
• Long-term optical variability properties of the Palomar-Green quasars
• Optical Variability in Active Galactic Nuclei: Starbursts or Disk Instabilities?
• Optical and radio behaviour of the BL Lacertae object 0716+714
• The role of kink instability in Poynting-flux dominated jets
• The WEBT BL Lac Campaign 2000
• 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
• Spine-sheath layer radiative interplay in subparsec-scale jets and the TeV emission from M87
• 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
• Periodic Oscillations in the Intra-day Optical Light Curves of the Blazar S5 0716+714
• The WEBT BL Lacertae Campaign 2001 and its extension
• Setting UBVRI Photometric Zero-Points Using Sloan Digital Sky Survey ugriz Magnitudes
• Long-term optical monitoring of TeV emitting Blazars
• The Outburst of the Blazar S5 0716+71 in 2011 October: Shock in a Helical Jet
• Multifrequency monitoring of the blazar 0716+714 during the GASP-WEBT-AGILE campaign of 2007
• Testing tests on AGN microvariability
• Optical Intra-day Variability in Blazars
• Causality and stability of cosmic jets
• Quasi-Periodic Oscillations of ~ 15 minutes in the Optical Light Curve of the BL Lac S5 0716+714
• On the jet properties of the gamma-ray loud active galactic nuclei
• Variable Gamma-ray Emission Induced by Ultra-High Energy Neutral Beams: Application to 4C +21.35
• Detection of Possible Quasi-periodic Oscillations in the Long-term Optical Light Curve of the BL Lac Object OJ 287
• Three-dimensional Simulations of AGN Jets: Magnetic Kink Instability versus Conical Shocks
• The optical microvariability and spectral changes of the BL Lacertae object S5 0716+714
• Discovery of Very High Energy gamma-rays from the blazar S5 0716+714
• The Intra-Night Optical Variability of the bright BL Lac object S5 0716+714
• The radio delay of the exceptional 3C 454.3 outburst. Follow-up WEBT observations in 2005-2006
• Multi-wavelength variability properties of Fermi blazar S5 0716+714
• Optical Monitoring of BL Lac Object S5 0716+714 with High Temporal Resolution
• Optical Monitoring of BL Lacertae Object S5 0716+714 with a Novel Multi-Peak Interference Filter
• Kinematic Study of the Blazar S5 0716+714
• The BL Lac objects OQ 530 and S5 0716+714. Simultaneous observations in the X-rays, radio, optical and TeV bands
• Longterm Optical Monitoring of Bright BL Lacertae Objects with ATOM: Spectral Variability and Multiwavelength Correlations
• Simultaneous X-ray and optical observations of S5 0716+714 after the outburst of March 2004
• The 72-Hour WEBT Microvariability Observation of Blazar S5 0716+714 in 2009
• Multiwavelength Intraday Variability of the BL Lac S5 0716+714
• On the spine-layer scenario for the very high-energy emission of NGC 1275
• Multifrequency Photo-polarimetric WEBT Observation Campaign on the Blazar S5 0716+714: Source Microvariability and Search for Characteristic Timescales
• The long-term optical spectral variability of BL Lacertae
• Multi-color optical monitoring of the quasar 3C 273 from 2005 to 2016
• Multi-wavelength characterization of the blazar S5~0716+714 during an unprecedented outburst phase
• On the reliability of microvariability tests in quasars
• The Long Term Optical Variability of the BL Lac object S5 0716+714: Evidence for a Precessing Jet
• 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 Calibration of the Swift/UVOT Optical Observations: A Recipe for Photometry
• Tests for Standard Accretion Disk Models by Variability in Active Galactic Nuclei
• The optical variability of flat-spectrum radio quasars in the SDSS stripe 82 region
• Simultaneous B'V'R' Monitoring of BL Lacertae Object S5~0716+714 and Detection of Inter-Band Time Delay
• Rapid optical variability in blazar S5 0716+71 during 2010 March
• A Consolidated Framework of the Color Variability in Blazars: Long-Term Optical/Near-Infrared Observations of 3C 279
• Multi-band optical variability of the Blazar S5 0716+714 in outburst state during 2014-2015
• Optical Intraday Variability Studies of Ten Low Energy Peaked Blazars
• Multi-wavelength study of flaring activity in BL Lac object S5 0716+714 during 2015 outburst
• Testing microvariability in quasar differential light curves using several field stars
• Optical quasi-periodic oscillation of the BL Lacertae object S5 0716+714 during the faint state
• Multi-band optical-NIR variability of blazars on diverse timescales
• Optical Flux and Spectral Variability of the TeV blazar PG 1553+113
• Multicolor Optical Monitoring of the Blazar S5 0716+714 from 2017 to 2019
• Multi-color optical monitoring of Mrk 501 from 2010 to 2015
• First hard X-ray observations of the blazar S5 0716+714 with NuSTAR during a multiwavelength campaign
• The Ultraviolet/optical variability of steep-spectrum radio quasars: the change in accretion rate ?
• Optical monitoring of BL Lac object S5 0716+714 and FSRQ 3C273 from 2000 to 2014
• Multi-band Variability Analysis of Mrk 421
• Probing the innermost regions of AGN jets and their magnetic fields with RadioAstron. III. Blazar S5 0716+71 at microarcsecond resolution
• Search for Intra-day Optical Variability in $\gamma$-ray--loud Blazars S5 0716+714 and 3C 273
• Multi-color optical monitoring of the BL Lacertae object S5 0716+714 during the 2012 outburst
• Statistical analysis of micro-variability properties of the blazar S5 0716+714
• The gamma-ray and Optical Variability Analysis of the BL Lac Object 3FGL J0449.4-4350
• A geometrical interpretation for the properties of multiband optical variability of the blazar S5 0716+714
• An Accretion Disc-Irradiation Hybrid Model for The Optical/UV Variability in Radio-Quiet Quasars
• Constraints on black hole massess with timescales of variations in blazars
• Quasi-simultaneous Spectroscopic and Multi-band Photometric Observations of Blazar S5 0716+714 during 2018-2019
• Intra-day optical multi-band quasi-simultaneous observation of BL Lacertae object S5 0716+714 from 2013 to 2016
• Optical variability in IBL S5 0716+714 during the 2013-2015 outburst
• Multicolour Optical Variability Monitoring of Blazars with High Time Resolution
• The Radio and $\gamma$-ray Variability Analysis of S5 0716+714
• Interpreting the variation phenomena of B2 1633+382 via the two-component model
• Multi-wavelength Variation Phenomena of PKS 0735+178 on Diverse Timescale
• Long-term multiband optical variability of S5 0716+714 blazar
• Spectroscopic Monitoring of Blazar S5 0716+714: Brightness-Dependent Spectral Behavior
• Possible Gravitational Microlensing Events in the Optical Lightcurve of Active Galaxy S5 0716+714
• Intraday variability of the polarization vector in AGN S5 0716+714

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