Microvariability in the optical polarization of 3C279

Details Microvariability in the optical polarization of 3C279 Microvariability in the optical polarization of 3C279

2003-08-13

arxiv.org/abs/astro-ph/0308224v1

Astron.Astrophys.409:857-866,2003

Astronomy and Astrophysics

Astrophysics

10 pages, 9 figures, accepted for publication in A&A

Scientific paper

10.1051/0004-6361:20031178

We present results of a microvariability polarization study in the violently variable quasar 3C279. We have resolved the polarization curves in the V band for this object down to timescales of minutes. We found two main components in the evolution of the degree of linear polarization, one consisting of a flicker with timescales of several tens of minutes and other component with far more significant variations on timescales of a few days. The linear polarization descended from $\sim 17$ % down to $\sim 8$ % in three nights. The polarization angle underwent a sudden change of more that 10 degrees in a few hours, perhaps indicating the injection of a new shock in the jet. The amplitude of the intranight flickering in the degree of polarization is at the level of $\sim 1$%. These are probably the best sampled polarization data ever obtained for this object. We also performed IR observations and we provide a follow-up of the evolution of this source at such energies after the main polarization outburst.

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