Statistics – Computation
Scientific paper
Jul 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...342.1049h&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 342, July 15, 1989, p. 1049-1060.
Statistics
Computation
20
Computational Astrophysics, Magnetic Field Configurations, Magnetohydrodynamic Flow, Stellar Winds, Differential Equations, Flow Velocity, Particle Acceleration, Stellar Magnetic Fields, Stellar Rotation
Scientific paper
A steady hydromagnetic stellar wind flowing in a rotating axisymmetric partially open magnetic field is modeled under the assumptions that the density is a function of radial distance only and that the flow is everywhere aligned to the local magnetic field. The model illustrates that monotonic acceleration of the wind speed in the polar region requires a decrease of density toward the stellar pole at fixed radial distance. In the presence of rotation, a nonalignment between the flow velocity and the magnetic field is found to be necessary for the acceleration of the poloidal flow speed from below to above the Alfven speed defined in terms of the poloidal part of the magnetic field.
Chye Low Boon
Hu Yong-Qing
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