Stellar winds driven by Alfven waves

Details Stellar winds driven by Alfven waves Stellar winds driven by Alfven waves

Sep 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apj...200..369b&link_type=abstract

Astrophysical Journal, vol. 200, Sept. 1, 1975, pt. 1, p. 369-382.

Astronomy and Astrophysics

Astrophysics

28

Magnetohydrodynamic Waves, Stellar Winds, Wave Propagation, Astronomical Models, Equations Of Motion, Lines Of Force, Relativistic Effects, Stellar Magnetic Fields

Scientific paper

Properties are analyzed of stellar winds in which Alfven waves propagating outward along radial magnetic-field lines drive the dynamic expansion of the corona. It is shown that the constants of motion of these winds may be simply expressed in terms of reference-level parameters near the star. The analysis indicates that the streaming velocities at infinity as well as the mass and energy fluxes of winds accelerated solely by Alfven-wave pressures will vary over ranges of values that depend on the initial Alfven-wave energy flux. The dynamics of the acceleration mechanism producing these winds is discussed in detail, and a star similar to the sun is considered for purposes of numerical illustration.

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