Steady hydromagnetic flows in open magnetic fields. III - Allowing for variations of density with latitude and nonalignment of velocity with magnetic field

Abstract

view Abstract Citations (23) References (7) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Steady Hydromagnetic Flows in Open Magnetic Fields. III. Allowing for Variations of Density with Latitude and Nonalignment of Velocity with Magnetic Field Hu, Y. Q. ; Low, B. C. Abstract 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. Publication: The Astrophysical Journal Pub Date: July 1989 DOI: 10.1086/167661 Bibcode: 1989ApJ...342.1049H Keywords: Computational Astrophysics; Magnetic Field Configurations; Magnetohydrodynamic Flow; Stellar Winds; Differential Equations; Flow Velocity; Particle Acceleration; Stellar Magnetic Fields; Stellar Rotation; Astrophysics; HYDROMAGNETICS; STARS: WINDS full text sources ADS | Related Materials (2) Part 1: 1986ApJ...302..163L Part 2: 1989ApJ...342.1028T