Stephen Potter South African Astronomical Observatory Polarization studies of magnetic Cataclysmic Variables.

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Presentation transcript:

Stephen Potter South African Astronomical Observatory Polarization studies of magnetic Cataclysmic Variables

Outline Photo-polarimetry Model to derive shock geometry Doppler tomography => overall accretion geometry Spectropolarimetry Investigate the shock structure Future with SALT Spectropolarimetry with PFIS

SAAO 1.9m

Stokes imaging Potter et al (2004) MNRAS 248, 316

Doppler tomography Potter et al (2004) MNRAS 348, 316

QS Tel trailed spectra Schwope et al A&A 293, 764 ESO/MPI 2.2m

QS Tel trailed spectra Schwope et al A&A 293, 764 ESO/MPI 2.2m

QS Tel average spectra Schwope et al , 764 ESO/MPI 2.2m

V834 Cen spectropolarimetry Wickramasinghe Tuohy & Visvanathan ApJ 318, 326 AAT 3.9m

V834 Cen spectropolarimetry Wickramasinghe Tuohy & Visvanathan ApJ 318, 326 AAT 3.9m

Spectropolarimetry of AM Her Schaich et al A&A 264, m German/Spanish Calar Alto

Spectropolarimetry with SALT

Shock models Wickramasinghe & Meggitt 1982 MNRAS 198, 975

Stratified accretion shock models Potter et al (2002) ASPC, 261, 165

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