J/A+AS/129/569 BVRI photometry of OJ 287 (Jia Guibin+ 1998)
Microvariability of the blazar OJ 287
Jia Guibin, Cen Xuefen, Ma Huiyu, Wang Jiancheng
<Astron. Astrophys. Suppl. Ser. 129, 569 (1998)>
=1998A&AS..129..569J 1998A&AS..129..569J (SIMBAD/NED BibCode)
ADC_Keywords: BL Lac objects ; Photometry, UBVRI ; Photometry, CCD
Keywords: BL Lacertae objects: individual (OJ 287) - galaxies: active
Abstract:
Results of BVRI CCD photometric monitoring and fast photometry in the
I band for the blazar OJ 287 in 1994-1995 are presented. The predicted
outburst of the blazar had been observed, the maximum appeared in 1994
November, after that, the luminosity decreased by 1.6mag for about
three months and dropped to near the level in 1994 April. Rapid
variations with timescales of minutes, hours and one day were observed
in our observations, with small amplitude. The amplitude of the most
rapid variations (minutes) is in the range of 0.043-0.12mag . The
results of the statistical analysis of the fast photometry data are as
follows. In five nights out of six rapid variability appeared in the
sampling interval, which ranged from 3.4 minutes to 6.5 minutes, with
a rms amplitude of flux variations of 1.70%-2.3%. The rapid
variability can be explained by the model of shocks within turbulent
jet or of vortices and magnetic flux tubes on accretion disk.
Objects:
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RA (2000) DE Designation(s)
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08 54 48.9 +20 06 31 OJ 287 = QSO 0851+202
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 35 155 Results for OJ 287
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See also:
J/A+AS/128/315 : BVRI photometry of blazars (JiaGuibin+ 1998)
Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 8 A8 "DD/MM/YY" Date Observation date
10- 20 F11.3 d JD Julian date
22 A1 --- Band [BVRI] The observed waveband
24- 28 F5.2 mag mag Magnitude (BVRI) in the band
30- 33 F4.2 mag e_mag Error on mag
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Acknowledgements: Jiancheng Wang
(End) Patricia Bauer [CDS] 09-Dec-1997