Tuesday, 19 August, 1997 at 3pm

Gareth Leyshon - Univ. of Wales, Cardiff

"UKIRT polarimetric evidence for quasar cores in high redshift radio galaxies"

ABSTRACT: "High redshift radio galaxies were first imaged with K-band polarimetry at UKIRT in August 1995, when Steve Eales surveyed a sample of seven 3CR galaxies at 0.7 < z < 1.2. Analysis of this data shows strong evidence for polarization in three sources: 3C 22, 3C 41 and 3C 114. From these results, we conclude that scattered nuclear light can form a significant component of the near-infrared light emitted by high-redshift radio galaxies. Using UKIRT data with visible data supplied by colleagues, it has been possible to fit electron and dust models for scattering in two of the sources."