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New views of the solar wind with the Lambert W function

New views of the solar wind with the Lambert W function This paper presents closed-form analytic solutions to two illustrative problems in solar physics that have been considered not solvable in this way previously. Both the outflow speed and the mass loss rate of the solar wind of plasma particles ejected by the Sun are derived analytically for certain illustrative approximations. The calculated radial dependence of the flow speed applies to both Parker’s isothermal solar wind equation and Bondi’s equation of spherical accretion. These problems involve the solution of transcendental equations containing products of variables and their logarithms. Such equations appear in many fields of physics and are solvable by use of the Lambert ; W function, which is briefly described. This paper is an example of how new functions can be applied to existing problems. © ; 2004 American Association of Physics Teachers. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png American Journal of Physics American Association of Physics Teachers

New views of the solar wind with the Lambert W function

American Journal of Physics , Volume 72 (11) – Nov 1, 2004

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References (34)

Publisher
American Association of Physics Teachers
Copyright
Copyright © 2004 American Association of Physics Teachers
ISSN
0002-9505
eISSN
1943-2909
DOI
10.1119/1.1775242
Publisher site
See Article on Publisher Site

Abstract

This paper presents closed-form analytic solutions to two illustrative problems in solar physics that have been considered not solvable in this way previously. Both the outflow speed and the mass loss rate of the solar wind of plasma particles ejected by the Sun are derived analytically for certain illustrative approximations. The calculated radial dependence of the flow speed applies to both Parker’s isothermal solar wind equation and Bondi’s equation of spherical accretion. These problems involve the solution of transcendental equations containing products of variables and their logarithms. Such equations appear in many fields of physics and are solvable by use of the Lambert ; W function, which is briefly described. This paper is an example of how new functions can be applied to existing problems. © ; 2004 American Association of Physics Teachers.

Journal

American Journal of PhysicsAmerican Association of Physics Teachers

Published: Nov 1, 2004

Keywords: solar wind; accretion; solar corona; astrophysical plasma

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