J/A+A/555/A123 3D-MHD model of a solar active region corona (Bourdin+, 2013)
Observationally driven 3D MHD model of the solar corona above an active region.
Bourdin P.-A., Bingert S., Peter H.
<Astron. Astrophys. 555, A123 (2013)>
=2013A&A...555A.123B 2013A&A...555A.123B
ADC_Keywords: Sun
Keywords: Sun: corona - magnetohydrodynamics (MHD) - methods: numerical -
Sun: UV radiation
Abstract:
The goal is to employ a 3D magnetohydrodynamics (MHD) model including
spectral synthesis to model the corona in an observed solar active
region. This will allow us to judge the merits of the coronal heating
mechanism built into the 3D model.
Photospheric observations of the magnetic field and horizontal
velocities in an active region are used to drive our coronal
simulation from the bottom. The currents induced by this heat the
corona through Ohmic dissipation. Heat conduction redistributes the
energy that is lost in the end through optically thin radiation. Based
on the MHD model, we synthesized profiles of coronal emission lines
which can be directly compared to actual coronal observations of the
very same active region.
Description:
Parameter and setup files used for a 3D-MHD simulation with the Pencil
Code. The parameters are needed to reproduce the simulation, while the
setup files show which modules of the Pencil Code were used to conduct
the simulation.
The parameters file are in the state as used at the end of the
simulation, when the analysis was performed. With the logfile, one can
reconstruct the state at any time during the simulation run (this
applies to "run.in").
The code revision logfile indicates which code revision was used when,
where only changes in the configuration are listed together with the
full initial and final configuration.
All *.in files are in Fortran Namelist format. The *.in and *.local
files are all ready to be used with Pencil Code. The Pencil Code can
be obtained at: http://pencil-code.nordita.org/
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
start.in 85 46 Parameters for the initialization of the model
run.in 114 105 Parameters during the simulation run
print.in 17 28 Quantities that shall be extracted as time-series
revision.log 56 1320 Code revisions that were used during the run
params.log 125 105 Logfile of changes in the simulation parameters
Makefile.local 50 26 List of code modules that were used
cparam.local 60 7 Setup of the number of processors and sub-domains
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Acknowledgements:
Philippe-A. Bourdin, Bourdin(at)MPS.mpg.de,
MPI for Solar System Research, Germany
(End) P.-A. Bourdin [MPI for Solar System Res.], P. Vannier [CDS] 05-Aug-2013