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A study of DNOs and QPOs in Cataclysmic Variable stars

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋ , Brian Warner, Patrick Woudt University of Cape Town. ♋ author email: johbenbrey@gmail.com. SKA Postgraduate Bursary Conference 2011. A study of DNOs and QPOs in Cataclysmic Variable stars

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A study of DNOs and QPOs in Cataclysmic Variable stars

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  1. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com SKA Postgraduate Bursary Conference 2011

  2. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? SKA Postgraduate Bursary Conference 2011

  3. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? SKA Postgraduate Bursary Conference 2011

  4. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary SKA Postgraduate Bursary Conference 2011

  5. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary SKA Postgraduate Bursary Conference 2011

  6. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe SKA Postgraduate Bursary Conference 2011

  7. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer SKA Postgraduate Bursary Conference 2011

  8. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer SKA Postgraduate Bursary Conference 2011

  9. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc SKA Postgraduate Bursary Conference 2011

  10. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc SKA Postgraduate Bursary Conference 2011

  11. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc SKA Postgraduate Bursary Conference 2011

  12. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability SKA Postgraduate Bursary Conference 2011

  13. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? SKA Postgraduate Bursary Conference 2011

  14. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? SKA Postgraduate Bursary Conference 2011

  15. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations SKA Postgraduate Bursary Conference 2011

  16. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations SKA Postgraduate Bursary Conference 2011

  17. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations • Ṁ2 < Ṁ1 SKA Postgraduate Bursary Conference 2011

  18. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations • Ṁ2 < Ṁ1 SKA Postgraduate Bursary Conference 2011

  19. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations • Ṁ2 < Ṁ1 ρ SKA Postgraduate Bursary Conference 2011

  20. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations • Ṁ2 < Ṁ1 ρ until SKA Postgraduate Bursary Conference 2011

  21. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations • Ṁ2 < Ṁ1 ρ until . SKA Postgraduate Bursary Conference 2011

  22. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations • Ṁ2 < Ṁ1 ρ until . . SKA Postgraduate Bursary Conference 2011

  23. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations • Ṁ2 < Ṁ1 ρ until . . . SKA Postgraduate Bursary Conference 2011

  24. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations • Ṁ2 < Ṁ1 ρ until . . . gas phase change SKA Postgraduate Bursary Conference 2011

  25. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations • Ṁ2 < Ṁ1 ρ until . . . gas phase change SKA Postgraduate Bursary Conference 2011

  26. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations • Ṁ2 < Ṁ1 ρ until . . . gas phase change T, μ SKA Postgraduate Bursary Conference 2011

  27. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations • Ṁ2 < Ṁ1 ρ until . . . gas phase change μ SKA Postgraduate Bursary Conference 2011

  28. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations “Cataclysmic” • Ṁ2 < Ṁ1 ρ until . . . gas phase change μ SKA Postgraduate Bursary Conference 2011

  29. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations “Cataclysmic” • Ṁ2 < Ṁ1 ρ until . . . gas phase change μ SKA Postgraduate Bursary Conference 2011

  30. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations SKA Postgraduate Bursary Conference 2011

  31. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations SKA Postgraduate Bursary Conference 2011

  32. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations SKA Postgraduate Bursary Conference 2011

  33. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations SKA Postgraduate Bursary Conference 2011

  34. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations • Seen in optical through X-ray SKA Postgraduate Bursary Conference 2011

  35. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations • Seen in optical through X-ray • PDNO∼ 5 - 40 s SKA Postgraduate Bursary Conference 2011

  36. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations • Seen in optical through X-ray • PDNO∼ 5 - 40 s • 103 ≲ |ṖDNO|-1 ≲ 107 SKA Postgraduate Bursary Conference 2011

  37. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations • Seen in optical through X-ray • PDNO∼ 5 - 40 s • 103 ≲ |ṖDNO|-1 ≲ 107 SKA Postgraduate Bursary Conference 2011

  38. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations QPOs? SKA Postgraduate Bursary Conference 2011

  39. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations QPOs? Quasi-Periodic Oscillations SKA Postgraduate Bursary Conference 2011

  40. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations QPOs? Quasi-Periodic Oscillations SKA Postgraduate Bursary Conference 2011

  41. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations QPOs? Quasi-Periodic Oscillations • Seen in optical through X-ray SKA Postgraduate Bursary Conference 2011

  42. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations QPOs? Quasi-Periodic Oscillations • Seen in optical through X-ray • PDNO∼ 30 - 600 s SKA Postgraduate Bursary Conference 2011

  43. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations QPOs? Quasi-Periodic Oscillations • Seen in optical through X-ray • PDNO∼ 30 - 600 s • 5 ≲ |ṖDNO|-1 ≲ 20 SKA Postgraduate Bursary Conference 2011

  44. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations QPOs? Quasi-Periodic Oscillations FT SKA Postgraduate Bursary Conference 2011

  45. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations QPOs? Quasi-Periodic Oscillations FT SKA Postgraduate Bursary Conference 2011

  46. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations QPOs? Quasi-Periodic Oscillations FT SKA Postgraduate Bursary Conference 2011

  47. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? Dwarf Nova Oscillations QPOs? Quasi-Periodic Oscillations SKA Postgraduate Bursary Conference 2011

  48. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? QPOs? SKA Postgraduate Bursary Conference 2011

  49. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? QPOs? SKA Postgraduate Bursary Conference 2011

  50. A study of DNOs and QPOs in Cataclysmic Variable stars HannesBreytenbach♋, Brian Warner, Patrick WoudtUniversity of Cape Town ♋ author email: johbenbrey@gmail.com CVs? • Binary • WD primary + MS secondary Overfilling Roche Lobe Mass Transfer • Accretion disc Variability DNOs? QPOs? SKA Postgraduate Bursary Conference 2011

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