12 papers
Simultaneous Doppler maps of IP Peg in outburst
C. Papadaki, H. M. J. Boffin, D. Steeghs
IP Pegasi is an eclipsing dwarf nova lying above the period gap with an orbital period of 3.8h. It is the first cataclysmic variable to show evidence of spiral arms in its accretio…
Gas flow in close binary star systems
K. Oka, T. Matsuda, I. Hachisu +1
We first present a summary of our numerical work on accretion discs in close binary systems. Our recent studies on numerical simulations of the surface flow on the mass-losing star…
Time-resolved photometry of cataclysmic variables
C. Papadaki, H. M. J. Boffin, J. Cuypers +3
We present time-resolved photometry of two cataclysmic variables whose CCD photometric observations were obtained with the 1m telescope at the South African Astronomical Observator…
HD 112914 : A nearby one solar mass binary system
Henri M. J. Boffin, Dimitri Pourbaix
In paper 167 of his serie published in The Observatory, Griffin presented the spectroscopic orbit of HD 112914, a late main sequence star. He also noticed that this star, also know…
Spiral waves in accretion discs - theory
Henri M. J. Boffin
Spirals shocks have been widely studied in the context of galactic dynamics and protostellar discs. They may however also play an important role in some classes of close binary sta…
Direct Monte Carlo simulations of accretion discs
Takuya Matsuda, Hiromi Mizutani, Henri M. J. Boffin
We apply the Direct Simulation Monte Carlo (DSMC) method, developed originally to calculate rarefied gas dynamical problems, to study the gas flow in an accretion disc in a close b…