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A two-dimensional MHD global coronal model: Steady-state streamers

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Abstract

We describe a two-dimensional time-dependent, numerical, magnetohydrodynamic model for the determination of the physical properties of coronal streamers from the top of the transition zone (R⊙ = 1) to 15R⊙. Four examples are given: for dipole, quadrupole, and hexapole initial field topologies. The computed parameters are density, temperature, velocity, and magnetic field. In addition to the properties of the solutions, their accuracy is discussed. We use the model as the basis for a general discussion of the way boundary conditions are specified in this and similar simulations.

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Authors and Affiliations

  1. Center for Space Plasma and Aeronomic Research and Department of Mechanical Engineering, The University of Alabama in Huntsville, 35899, Huntsville, AL, USA

    A. -H. Wang & S. T. Wu

  2. Space Science Lab, ES52, NASA Marshall Space Flight Center, 35812, Huntsville, AL, USA

    S. T. Suess

  3. Osservatorio Astrofisico di Arcetri, 50125, Firenze, Italy

    G. Poletto

Authors
  1. A. -H. Wang
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  2. S. T. Wu
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  3. S. T. Suess
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  4. G. Poletto
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Wang, A.H., Wu, S.T., Suess, S.T. et al. A two-dimensional MHD global coronal model: Steady-state streamers. Sol Phys 147, 55–71 (1993). https://doi.org/10.1007/BF00675487

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  • DOI: https://doi.org/10.1007/BF00675487

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