Microvariability in the optical polarization of 3C 279

• Autores: Andruchow, Ileana; Cellone, Sergio Aldo; Romero, Gustavo Esteban; Dominici, T. P.; Abraham, Z.
• Año de publicación: 2003
• Idioma: inglés
• Tipo de recurso: artículo
• Materia: Ciencias Astronómicas; Galaxies: active; Galaxies: individual: 3C 279; Galaxies: photometry; Polarization
• Institución: Universidad Nacional de La Plata

We present results of a microvariability polarization study in the violently variable quasaer 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.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto Argentino de Radioastronomía