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| Paper: |
Numerical Experiments on the Two-Step Emergence of Solar
Magnetic Fields from the Convective Layer |
| Volume: |
454, The 3rd Hinode Science Meeting |
| Page: |
259 |
| Authors: |
Toriumi, S.; Yokoyama, T. |
| Abstract: |
We perform two-dimensional magnetohydrodynamic (MHD)
simulations of the flux emergence
from the solar convection zone to the corona.
The flux sheet is initially located moderately deep
(–20,000 km)
in the adiabatically stratified convection zone
and is perturbed to trigger the Parker instability.
The flux rises through the interior,
but decelerates around the strongly sub-adiabatic photosphere.
As the magnetic pressure gradient increases,
the flux becomes unstable to the Parker instability again
so that further evolution to the corona occurs.
We show the results of the simulations
based on this ‘two-step emergence’ model
and make some discussions in connection with the results
of the thin-flux-tube simulations. |
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