Browsing University of Hertfordshire by Author "Mead, A.R.G."

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    • 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. (1990)
      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 ...

    • The optical and infrared-emission of blazars 

      Ballard, K.R.; Mead, A.R.G.; Brand, P.W.J.L.; Hough, J. (1990)
      A polarization study is presented of 44 blazars and candidate blazars observed at optical and near-IR frequencies. The spectrum of the radiation is discussed in terms of shock acceleration models. Frequency dependence is ...

    • Polarimetric observations of the quasar 3C-345 

      Mead, A.R.G.; Brand, P.W.J.L.; Hough, J.; Bailey, J. (1988)
      Infrared and optical polarimetric observations of the quasar 3C 345 are presented, which show a decrease in the degree of polarization with frequency previously observed by Smith et al., and interpreted by them as the ...