J/ApJ/768/40 R-band and polarimetry of the blazar S5 0716+71 (Larionov+, 2013)
The outburst of the blazar S5 0716+71 in 2011 October: shock in a helical jet.
Larionov V.M., Jorstad S.G., Marscher A.P., Morozova D.A., Blinov D.A.,
Hagen-Thorn V.A., Konstantinova T.S., Kopatskaya E.N., Larionova L.V.,
Larionova E.G., Troitsky I.S.
<Astrophys. J., 768, 40 (2013)>
=2013ApJ...768...40L 2013ApJ...768...40L
ADC_Keywords: BL Lac objects ; Photometry, RI ; Polarization
Keywords: BL Lacertae objects: individual: S5 0716+71;
galaxies: active; galaxies: jets; polarization
Abstract:
We present the results of optical (R band) photometric and
polarimetric monitoring and Very Long Baseline Array (VLBA) imaging of
the blazar S5 0716+714 along with Fermi γ-ray data during a
multi-waveband outburst in 2011 October. We analyze total and
polarized intensity images of the blazar obtained with the VLBA at
43GHz during and after the outburst. Monotonic rotation of the linear
polarization vector at a rate of ≳50° per night coincided with a
sharp maximum in γ-ray and optical flux. At the same time,
within the uncertainties, a new superluminal knot appeared with an
apparent speed of 21±2c. The general multi-frequency behavior of the
outburst can be explained within the framework of a shock wave
propagating along a helical path in the blazar's jet.
Description:
The observations reported here were collected as a part of a long-term
multi-wavelength study of blazars that follows nonthermal activity at
optical and γ-ray frequencies. An overview of this program is
given in Marscher (2012IJMPS...8..151M 2012IJMPS...8..151M).
We obtained observational data at the 70cm AZT-8 reflector of the
Crimean Astrophysical Observatory, 40cm LX-200 telescope in
St. Petersburg, and 1.8m Perkins telescope of Lowell Observatory. The
photometric measurements in the R band were supplemented by
observations at the 2m Liverpool Telescope at La Palma, Canary
Islands, Spain. Polarimetry at AZT-8 and the Perkins telescope was
made in the Cousins R band, and in white light at LX-200, with an
effective wavelength close to R. The photometric errors do not exceed
0.02m.
Objects:
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RA (ICRS) DE Designation(s)
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07 21 53.45 +71 20 36.4 S5 0716+71 = NVSS J072153+712036
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 53 78 Photometry and polarimetry of S5 0716+71 during
2011 October outburst
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See also:
J/A+A/558/A92 : S5 0716+714 microvariability observation (Bhatta+, 2013)
J/AJ/143/108 : B'V'R' photometry of the BL Lac object S5 0716+714 (Wu+, 2012)
J/ApJ/761/125 : X and γ spectral indexes of Fermi blazars (Fan+, 2012)
J/ApJ/731/118 : R-band variability in blazar S5 0716+71 (Chandra+, 2011)
J/ApJS/194/19 : Optical linear polarization at McDonald Obs. (Wills+, 2011)
J/MNRAS/401/1240 : Light curves of flat-spectrum radio sources (Jenness+, 2010)
J/ApJS/185/511 : Optical microvariability of S5 0716+714 (Poon+, 2009)
J/ApJ/706/1253 : MOJAVE VII. Blazar jet acceleration (Homan+, 2009)
J/AJ/136/1846 : BVRI light curves of S5 0716+714 (Zhang+, 2008)
J/AJ/135/1384 : R-band variability in 5 blazars (Gupta+, 2008)
J/AJ/133/1599 : B'V'R' photometry of S5 0716+714 (Wu+, 2007)
J/AZh/84/885 : VRI observations of radio source S5 0716+71 (Koptelova+, 2007)
J/AZh/83/310 : BV(RI)c photometry of S5 0716+714 (Amirkhanyan+, 2006)
J/A+A/451/435 : BV(RI)c photometry of S5 0716+714 (Montagni+, 2006)
J/A+A/450/39 : BVRI photometry of 8 red blazars (Gu+, 2006)
J/AJ/132/1256 : eim BATC photometry of OJ 287 (Wu+, 2006)
J/AJ/130/1418 : AGN jet kinematics (Jorstad+, 2005)
J/AJ/129/1818 : Photometry of S5 0716+714 (Wu+, 2005)
J/ApJ/609/539 : Kinematics of parsec-scale radio jets (Kellermann+, 2004)
J/ApJ/589/733 : VLBI polarimetry of CJF sources (Pollack+, 2003)
J/A+A/402/151 : S5 0716+714 UBVRI photometry (Raiteri+, 2003)
J/A+A/327/61 : BV(RI)c photometry of S5 0716+714 (Ghisellini+ 1997)
http://www.bu.edu/blazars/ : Blazar Research at Boston Univ. home page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 9 F9.3 d JD Julian day of the observation; JD-2400000
11- 16 F6.3 mag Rmag [12.3/13.8] The R band magnitude
18- 22 F5.3 mag e_Rmag [0.001/0.04] Uncertainty in Rmag
24- 28 F5.2 % Pol [2.7/20.2] Percent polarization in Cousins R-band
30- 33 F4.2 % e_Pol [0.1/3] Uncertainty in Pol
35- 39 F5.1 deg EVPA [210/578] Position angle of electric vector
41- 43 F3.1 deg e_EVPA [0.2/6.4] Uncertainty in EVPA
45- 53 A9 --- Tel Telescope used in the observation (1)
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Note (1): the telescopes are:
AZT-8+ST7 = 70cm reflector of the Crimean Astrophysical Observatory,
LX-200 = 40cm telescope in St. Petersburg
Perkins = 1.8m Perkins telescope of Lowell Observatory with PRISM camera
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 24-Nov-2014