J/ApJ/928/86 BVRI photometry of S5 0716+714 (Gorbachev+, 2022)
Long-term Multiband Optical Variability of Blazar S5 0716+714.
Gorbachev M.A., Butuzova M.S., Sergeev S.G., Nazarov S.V., Zhovtan A.V.
<Astrophys. J., 928, 86-86 (2022)>
=2022ApJ...928...86G 2022ApJ...928...86G (SIMBAD/NED BibCode)
ADC_Keywords: BL Lac objects ; Photometry ; Optical
Keywords: High energy astrophysics - Active galactic nuclei - Jets - Blazars -
Optical observation - Multi-color photometry
Abstract:
Multiband optical photometry data of blazar S5 0716+714 obtained from
2002 to 2019 reveal stable color index change with flux variability.
We analyzed this trend under variability caused by the Doppler factor
change in the presence of a curved photon energy spectrum. A break in
the energy spectrum of emitting electrons, caused by radiative losses,
or log-parabolic electron energy distribution, or the synchrotron
self-absorption acting in a compact jet part forms such the photon
spectrum. We explained the observed color index change with
variability by geometric effects only under the assumption that the
radiating region is the synchrotron self-absorbed core and the bright
optically thin jet. In this framework, we estimated the magnetic field
strength in the optically thick part of the radiating region. These
values correspond to other independent estimates of the magnetic field
near the black hole, further supporting our assumption.
Description:
Optical observations of the blazar S5 0716+714 was carried out on a
70-cm telescope AZT-8 located at the Crimean Astrophysical Observatory
of the Russian Academy of Sciences.
Objects:
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RA (2000) DE Designation(s)
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07 21 53.45 +71 20 36 S5 0716+714 = QSO B0716+714
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 28 16039 Observational log and results in the B,V,R,I bands
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See also:
J/A+A/327/61 : BV(RI)c photometry of S5 0716+714 (Ghisellini+ 1997)
J/A+A/402/151 : S5 0716+714 UBVRI photometry (Raiteri+, 2003)
J/AJ/129/1818 : Photometry of S5 0716+714 (Wu+, 2005)
J/A+A/451/435 : BV(RI)c photometry of S5 0716+714 (Montagni+, 2006)
J/AZh/83/310 : BV(RI)c photometry of S5 0716+714 (Amirkhanyan+, 2006)
J/AJ/133/1599 : B'V'R' photometry of S5 0716+714 (Wu+, 2007)
J/AJ/136/1846 : BVRI light curves of S5 0716+714 (Zhang+, 2008)
J/ApJS/185/511 : Optical microvariability of S5 0716+714 (Poon+, 2009)
J/AJ/143/108 : B'V'R' photometry of the BL Lac object S5 0716+714 (Wu+, 2012)
J/A+A/558/A92 : S5 0716+714 microvariability observation (Bhatta+, 2013)
J/ApJ/783/83 : BVRI photometry of S5 0716+714 (Liao+, 2014)
J/ApJS/218/18 : 2004-2012 BVRI observations of blazar S5 0716+714 (Dai+, 2015)
J/A+A/601/A12 : S5 0716+714 VLBI K- and Q-band variability (Lee+, 2017)
J/AJ/154/42 : BVRI photometry of S5 0716+714 in 2012 (Hong+, 2017)
J/PAZh/43/407 : S5 0716+714 polarization + brightness 1991-2004
(Doroshenko+ 2017)
J/A+A/619/A45 : S5 0716+714 multi-wavelength curves (MAGIC Coll.+, 2018)
J/AJ/155/31 : 2005-2012 BVRI observations of S5 0716+714 (Hong+, 2018)
J/ApJ/880/155 : RI photometry of blazars S5 0716+714 and 3C 273 (Liu+, 2019)
J/ApJ/884/92 : 7yrs of VRI obs. of S5 0716+714 and its flares (Xu+, 2019)
J/ApJ/888/30 : BVRI & spectroscopic light curves of S5 0716+714 (Feng+, 2020)
J/ApJ/902/42 : Spectroscopic monitoring of blazar S5 0716+714 (Feng+, 2020)
J/ApJS/247/49 : gri obs. of the blazar S5 0716+714 (2017-2019) (Xiong+, 2020)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 13 F13.5 d JD Julian Date of the Observation
15- 20 F6.3 mag mag Magnitude in Band
22- 26 F5.3 mag e_mag Error in mag
28 A1 --- Band [BVRI] band
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Acknowledgements:
Mark A. Gorbachev, mgorbachev17(at)gmail.com
(End) Mark Gorbachev [CrAO, Russia], Patricia Vannier [CDS] 29-Feb-2024