Optical and infrared polarimetry and photometry of blazars
Mead, A.R.G.; Ballard, K.R.; Brand, P.W.J.L.; Hough, J.; Brindle, C.; Bailey, J.
Citation: Mead , A R G , Ballard , K R , Brand , P W J L , Hough , J , Brindle , C & Bailey , J 1990 , ' Optical and infrared polarimetry and photometry of blazars ' Astronomy and Astrophysics: Supplement Series , vol 83 , no. 1 , pp. 183-204 .
We have carried out a polarization study of 44 blazars and candidate blazars at optical and near-infrared frequencies covering the period 1986 August to 1988 February. The data show flux and polarization properties changing on internight timescales, and commonly exhibit frequency dependence of a spectral index, polarization and polarization position angle. The observations of the quasar 1253 - 055(3C279) showed a U-band polarization of 45.5 ± 0.9%, the highest ever seen in a blazar. The interpretation of the data is the subject of a further paper (Ballard et al., 1989).
Original article can be found at: http://www.adsabs.harvard.edu/ Copyright European Southern Observatory