A Combined Approach for Coronal Magnetic Field Modeling

Details A Combined Approach for Coronal Magnetic Field Modeling A Combined Approach for Coronal Magnetic Field Modeling

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21640523h&link_type=abstract

American Astronomical Society, AAS Meeting #216, #405.23

Astronomy and Astrophysics

Astronomy

Scientific paper

With the expectation of high-quality photospheric vector magnetic field measurements to be returned by the Solar Dynamics Observatory, both for a finite active region and also possibly on a global scale, we present our approach of non-force-free extrapolation of the solar coronal magnetic field from vector magnetograms. In particular, we combine our analysis with sophisticated MHD simulations of solar active regions by providing our extrapolation result as initial input to the MHD system. We derive an approximation for the coronal plasma pressure based on the extrapolated non-force-free magnetic field. We show that our extrapolation result is close to a fully evolved MHD state through the self-consistent dynamic simulation. We further discuss the potential application of the method to the full-disk vector magnetic field measurements to be returned by SDO. QH acknowledges NASA grants NNX07AO73G and NNX10AG03G for support.

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