Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003basbr..23..228c&link_type=abstract
Boletim da Sociedade Astronômica Brasileira (ISSN 0101-3440), vol.23, no.1, p. 228-228
Astronomy and Astrophysics
Astronomy
Scientific paper
Accretion flow along a dipolar magnetic field is a common phenomenon in magnetic cataclysmic binaries systems. Previous investigation about the distribution of temperature, density, velocity and shock position in the accretion flow used geometrical approximations to solve the problem. We investigate hydrodynamics flows in accreting compact binary systems using, for the first time, a dipolar magnetic field lines as one of the curvilinear coordinates. We solved the hydrodynamic equations in curvilinear coordinates and determined the temperature and density structure of the accretion flow. The result is applied to magnetic cataclysmic variables of type Intermediary Polar. We have found that there are significant differences between the structures obtained by spherical, cylindrical and planar geometries (used in all previous studies) and the structure obtained by exact treatment of the dipolar field geometry. Our formulation will provide better models for determining the properties for radiation from magnetic cataclysmic variables, in particular concerning the mass estimation from X-ray continuum and line measurements.
Canalle B. G. J.
Cropper Mark
Ramsay Gavin
Saxton Curtis J.
Wu Ke
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