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arXiv · 0707.2599

Extreme photo-polarimetric behaviour of the blazar AO 0235+164

Sergio A. Cellone·Gustavo E. Romero·Jorge A. Combi·Josep Marti
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Abstract

We present optical photo-polarimetric observations with high temporal resolution of the blazar AO 0235+164. Our data, the first to test the photo-polarimetric behaviour of this object at very short time-scales, show significant micro-variability in total flux, colour index, linear polarization degree, and position angle. Strong inter-night variations are also detected for these parameters. Although no correlation between colour index and total flux was found, our data seem to support the general bluer-when-brighter trend already known for this object. The polarization degree, in turn, shows no correlation with total flux, but a clear trend in the sense that colour index is redder (the spectrum is softer) when the measured polarization is higher.

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Sergio A. Cellone, Gustavo E. Romero, Jorge A. Combi, Josep Marti. 2007-07-17. Extreme photo-polarimetric behaviour of the blazar AO 0235+164. https://doi.org/10.1111/j.1745-3933.2007.00366.x

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