2011ApJ...731..118C -
Astrophys. J., 731, 118 (2011/April-3)
Rapid optical variability in blazar S5 0716+71 during 2010 March.
CHANDRA S., BALIYAN K.S., GANESH S. and JOSHI U.C.
Abstract (from CDS):
We report rapid optical variability for the blazar S5 0716+71 during 2010 March 8-10 and 19-20 in the CCD observations made from Mt. Abu Infrared Observatory. The light curves are constructed for a duration longer than 3 hr each night, with very high temporal resolution (~45 s in the R band). During 2010 March 8, the source smoothly decayed by about 0.15 mag in 2.88 hr, apart from a fast flicker lasting about 30 minutes. S5 0716+71 brightened during March 9 and 10, showing high activity, while it was relatively faint (>14 mag in the R band) albeit variable during March 19-20. During March 9 and 10, rapid flickers in the intensity modulated the long-term intra-night (∼3 hr) variations. The present observations suggest that the blazar S5 0716+71 showed night-to-night and intra-night variability at various timescales with a 100% duty cycle for variation along with microvariability at significant levels. On a night-to-night basis, the source exhibits mild bluer-when-brighter nature. The interaction of shocks with local inhomogeneities in the jet appears to cause intra-night variations, while microvariations could be due to small-scale perturbations intrinsic to the jet.
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Journal keyword(s):
BL Lacertae objects: individual: S5 0716+71 - galaxies: active - galaxies: photometry - methods: observational
VizieR on-line data:
<Available at CDS (J/ApJ/731/118): table2.dat>
Simbad objects:
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