EDP Sciences
Free access
Volume 409, Number 3, October III 2003
Page(s) 857 - 865
Section Galactic structure and dynamics
DOI http://dx.doi.org/10.1051/0004-6361:20031178

A&A 409, 857-865 (2003)
DOI: 10.1051/0004-6361:20031178

Microvariability in the optical polarization of 3C 279

I. Andruchow1, S. A. Cellone2, G. E. Romero1, T. P. Dominici3 and Z. Abraham3

1  Instituto Argentino de Radioastronomía, CC5, (1894) Villa Elisa, Buenos Aires, Argentina
2  Facultad de Ciencias Astronómicas y Geofísicas UNLP, Paseo del Bosque, B1900FWA La Plata, Argentina
3  Departamento de Astronomia, Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, Brasil

(Received 5 May 2003 / Accepted 9 July 2003)

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 ~17% down to ~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 ~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.

Key words: galaxies: active -- galaxies: individual: 3C 279 -- polarization -- galaxies: photometry

Offprint request: I. Andruchow, andru@irma.iar.unlp.edu.ar

SIMBAD Objects
Tables at the CDS

© ESO 2003

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access.

An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.

  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account.
    In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.