| Texto completo | |
| Autor(es): |
Andruchow‚ I.
;
Cellone‚ SA
;
Romero‚ GE
;
Dominici‚ TP
;
Abraham‚ Z.
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Astronomy & Astrophysics; v. 409, n. 3, p. 857-865, 2003. |
| Resumo | |
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 similar to17% down to similar to8% 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 similar to1%. 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. (AU) | |
| Processo FAPESP: | 00/06769-4 - A galáxia e a formação de estrelas |
| Beneficiário: | Zulema Abraham |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 98/07491-8 - Estudo de variabilidade de quasares e objetos BL Lac |
| Beneficiário: | Tânia Pereira Dominici |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |