The radius of a magnetosphere in the radiation pressure dominated region of an accretion disk

Details The radius of a magnetosphere in the radiation pressure dominated region of an accretion disk The radius of a magnetosphere in the radiation pressure dominated region of an accretion disk

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.231..325w&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 231, March 15, 1988, p. 325-331.

Physics

17

Accretion Disks, Astrometry, Magnetospheres, Stellar Atmospheres, Radiation Pressure, Stellar Models, Stellar Physics, Supersonic Flow, X Ray Binaries

Scientific paper

The magnetospheric radius r(m) expected when radiation pressure regulates the structure of the innermost regions of the accretion disk surrounding a neutron star is calculated. The r(m) is estimated either by considering pressure equilibrium between the unperturbed disk and the neutron star magnetic field or by requiring that the magnetic stress is sufficient to bring the disk material into corotation. It is shown here that for both cases the dependence of r(m) on mass accretion rate is dependent on the viscosity model adopted for the inner disk and is in most cases quite different from that found for the gas pressure regime.

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