Self Consistent Models of the Solar Wind

Details Self Consistent Models of the Solar Wind Self Consistent Models of the Solar Wind

2010-07-06

arxiv.org/abs/1007.0954v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

12 pages, 1 figure, Space Science Reviews, in press (special issue corresponding to ISSI workshop on Coronal Heating and Solar

Scientific paper

The origins of the hot solar corona and the supersonically expanding solar wind are still the subject of much debate. This paper summarizes some of the essential ingredients of realistic and self-consistent models of solar wind acceleration. It also outlines the major issues in the recent debate over what physical processes dominate the mass, momentum, and energy balance in the accelerating wind. A key obstacle in the way of producing realistic simulations of the Sun-heliosphere system is the lack of a physically motivated way of specifying the coronal heating rate. Recent models that assume the energy comes from Alfven waves that are partially reflected, and then dissipated by magnetohydrodynamic turbulence, have been found to reproduce many of the observed features of the solar wind. This paper discusses results from these models, including detailed comparisons with measured plasma properties as a function of solar wind speed. Some suggestions are also given for future work that could answer the many remaining questions about coronal heating and solar wind acceleration.

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