Observing polarimetric variability from CVs to BLAZARS
2018 April 13
2018 May 16
The HIgh-speed Photo-POlarimeter of the South African Astronomical Observatory was designed and built for measuring the polarization of highly variable sources. To demonstrate its capabilities we present new detailed optical photo-polarimetric observations of two objects. Firstly of the blazar PKS 2155-304 where we recently showed the discovery of polarized quasi-periodic variations. Secondly of the recently-discovered white dwarf pulsar AR Scorpii. Our extensive dataset reveals that the polarized emission is remarkably stable and repeatable with spin, beat and orbital modulations.