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

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Presentation on theme: "Stephen Potter South African Astronomical Observatory Polarization studies of magnetic Cataclysmic Variables."— Presentation transcript:

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

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

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5 SAAO 1.9m

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

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

8 QS Tel trailed spectra Schwope et al. 1995 A&A 293, 764 ESO/MPI 2.2m

9 QS Tel trailed spectra Schwope et al. 1995 A&A 293, 764 ESO/MPI 2.2m

10 QS Tel average spectra Schwope et al. 1995 293, 764 ESO/MPI 2.2m

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

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

13 Spectropolarimetry of AM Her Schaich et al. 1992 A&A 264, 529 2.2m German/Spanish Calar Alto

14 Spectropolarimetry with SALT

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17 Shock models Wickramasinghe & Meggitt 1982 MNRAS 198, 975

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


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