A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion disc

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion disc

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion disc

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion disc Dwarf Nova Oscillations Variability

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability Ṁ 2 < Ṁ 1

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability Ṁ 2 < Ṁ 1

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability Ṁ 2 < Ṁ 1 ρ

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability Ṁ 2 < Ṁ 1 ρ until

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability Ṁ 2 < Ṁ 1 ρ until.

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability Ṁ 2 < Ṁ 1 ρ until..

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability Ṁ 2 < Ṁ 1 ρ until...

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability Ṁ 2 < Ṁ 1 ρ until...gas phase change

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability Ṁ 2 < Ṁ 1 ρ until...gas phase change

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability Ṁ 2 < Ṁ 1 ρ until...gas phase change T, μ

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability Ṁ 2 < Ṁ 1 ρ until...gas phase change μ

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability Ṁ 2 < Ṁ 1 ρ until...gas phase change μ “Cataclysmic”

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability Ṁ 2 < Ṁ 1 ρ until...gas phase change μ “Cataclysmic”

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion disc Dwarf Nova Oscillations Variability

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion disc Dwarf Nova Oscillations Variability

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion disc Dwarf Nova Oscillations Variability

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion disc Dwarf Nova Oscillations Variability Seen in optical through X-ray

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion disc Dwarf Nova Oscillations Variability Seen in optical through X-ray P DNO ∼ s

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion disc Dwarf Nova Oscillations Variability Seen in optical through X-ray P DNO ∼ s 10 3 ≲ |Ṗ DNO | -1 ≲ 10 7

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion disc Dwarf Nova Oscillations Variability Seen in optical through X-ray P DNO ∼ s 10 3 ≲ |Ṗ DNO | -1 ≲ 10 7

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion disc Dwarf Nova Oscillations Variability

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion disc Dwarf Nova Oscillations Variability Quasi-Periodic Oscillations

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion disc Dwarf Nova Oscillations Variability Quasi-Periodic Oscillations

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion disc Dwarf Nova Oscillations Variability Quasi-Periodic Oscillations Seen in optical through X-ray

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion disc Dwarf Nova Oscillations Variability Quasi-Periodic Oscillations Seen in optical through X-ray P DNO ∼ s

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion disc Dwarf Nova Oscillations Variability Quasi-Periodic Oscillations Seen in optical through X-ray P DNO ∼ s 5 ≲ |Ṗ DNO | -1 ≲ 20

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion disc Dwarf Nova Oscillations Variability Quasi-Periodic Oscillations FT

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion disc Dwarf Nova Oscillations Variability Quasi-Periodic Oscillations FT

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion disc Dwarf Nova Oscillations Variability Quasi-Periodic Oscillations FT

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion disc Dwarf Nova Oscillations Variability Quasi-Periodic Oscillations

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability ?

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability ?

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability ?

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability ?

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability ? “Judge a man by his questions rather than by his answers.” - Pierre-Marc-Gaston, duc de Lévis ( ) Maximes et réflexions sur différents sujets de morale et de politique (Paris, 1808)

A study of DNOs and QPOs in Cataclysmic Variable stars Hannes Breytenbach ♋, Brian Warner, Patrick Woudt University of Cape Town ♋ author SKA Postgraduate Bursary Conference 2011 Binary WD primary + MS secondary Overfilling Roche Lobe Mass Transfer Accretion discVariability ? Thank you! “Judge a man by his questions rather than by his answers.” - Pierre-Marc-Gaston, duc de Lévis ( ) Maximes et réflexions sur différents sujets de morale et de politique (Paris, 1808)