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Title: Validating a time-dependent turbulence-driven model of the solar wind

Although the mechanisms responsible for heating the Sun's corona and accelerating the solar wind are still being actively investigated, it is largely accepted that photospheric motions provide the energy source and that the magnetic field must play a key role in the process. Verdini et al. presented a model for heating and accelerating the solar wind based on the turbulent dissipation of Alfvén waves. We first use a time-dependent model of the solar wind to reproduce one of Verdini et al.'s solutions; then, we extend its application to the case where the energy equation includes thermal conduction and radiation losses, and the upper chromosphere is part of the computational domain. Using this model, we explore the parameter space and describe the characteristics of a fast solar wind solution. We discuss how this formulation may be applied to a three-dimensional MHD model of the corona and solar wind.
Authors:
; ; ;  [1] ;  [2] ;  [3]
  1. Predictive Science, Inc., 9990 Mesa Rim Road, Suite 170, San Diego, CA 92121-3933 (United States)
  2. Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109 (United States)
  3. Observatoire Royale de Belgique, 3 Avenue Circularie, B-1180 Bruxelles (Belgium)
Publication Date:
OSTI Identifier:
22357276
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 784; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ALFVEN WAVES; CHROMOSPHERE; ENERGY SOURCES; EQUATIONS; HEATING; MAGNETIC FIELDS; MAGNETOHYDRODYNAMICS; SOLAR WIND; SPACE; SUN; THERMAL CONDUCTION; THREE-DIMENSIONAL CALCULATIONS; TIME DEPENDENCE; TURBULENCE