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| Paper: |
Helioseismic Data from Emerging Flux Simulations |
| Volume: |
462, Progress in Solar/Stellar Physics with Helio- and Asteroseismology |
| Page: |
345 |
| Authors: |
Stein, R. F.; Lagerfjärd, A.; Nordlund, Å.; Georgobiani, D. |
| Abstract: |
Data from solar magneto-convection emerging flux simulations is
available for validating helioseismic inversion procedures. In
these simulations a uniform, untwisted, horizontal magnetic field is
advected by inflows at the bottom of the domain 48 Mm wide by 20
Mm deep and rises to the surface. The evolution for different field
strengths at 20 Mm depth has been investigated. The field emerges
first in a mixed polarity pepper and salt pattern, but then collects
into separate, unipolar concentrations and when enough flux has
reached the surface, pores are produced. In one case the field
strength was artificially increased and then the pores grew into
spot-like structures with penumbral-like borders. The online data
consists of slices of vertical and horizontal velocity and magnetic
field strength at continuum optical depths of 0.01, 0.1 and 1 as
well as the emergent intensity at one minute intervals plus four
hour averages (with 2 hour cadence) of the three-dimensional (3D) density,
velocity, temperature, energy, sound speed and magnetic field. The
data can be found as links from the web page:
http://steinr.pa.msu.edu/∼bob/data.html. These calculation were
performed on the supercomputers of the NASA Advanced Supercomputing
Division and were supported by grants from NASA and NSF. |
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