Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-10-11
Astronomy and Astrophysics
Astrophysics
3 figures; To be published in "Blazar Demographics and Physics", ASP Conf. Series, P. Padovani and C. M. Urry eds
Scientific paper
We present UBVRIJHK polarization and flux density observations of the quasar 3C 273 obtained during a time of outburst over two weeks in 1988 February. We have modelled these data with two power law components, each with wavelength-independent position angle. These components are roughly perpendicular. The steeper-spectrum component has higher infrared polarized flux density, with the electric vector approximately transverse to the projected direction of the VLBI jet. The K-band polarized flux density and position angle, and possibly the spectral index of the two components, are correlated with a time lag of less than a day. We explain our results in terms of a shocked jet model with two nearly co-spatial components: a shock component with magnetic field approximately perpendicular to the jet and the other with magnetic field approximately parallel to the jet.
Bailey Jon A.
Cross Lara L.
Hough James H.
Wills Beverley J.
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