Sunspot Seismology with the Solar Dynamics Observatory Helioseismic and Magnetic Imager

Details Sunspot Seismology with the Solar Dynamics Observatory Helioseismic and Magnetic Imager Sunspot Seismology with the Solar Dynamics Observatory Helioseismic and Magnetic Imager

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh14a..05b&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SH14A-05

Astronomy and Astrophysics

Astrophysics

[7522] Solar Physics, Astrophysics, And Astronomy / Helioseismology, [7524] Solar Physics, Astrophysics, And Astronomy / Magnetic Fields

Scientific paper

The Helioseismic and Magnetic Imager (HMI) onboard the Solar Dynamics Observatory (SDO) promises to yield detailed information about the subsurface dynamics and structure of solar active regions. A SDO Science Center was recently funded and initiated by NASA to (among other goals) enable the reliable measurements of subsurface flow, magnetic field, and sound speed in regions of strong magnetic fields. Using analyses of sunspots observed with HMI/SDO, we illustrate the challenges of this goal and suggest a plan for the development and implementation of new physics-based modeling of the subsurface structure of sunspots. Key components of this effort will be discussed, including numerical forward modeling of the wave propagation through model sunspots. These efforts incorporate both magnetostatic and magneto-convective models. This work is supported by the NASA SDO Science Center and Heliophysics GI programs through contracts NNH09CE41C and NNG07EI51C.

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