What Can we Learn from Nonlinear Force-Free Extrapolations?

Details What Can we Learn from Nonlinear Force-Free Extrapolations? What Can we Learn from Nonlinear Force-Free Extrapolations?

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..397...75r&link_type=abstract

First Results From Hinode ASP Conference Series, Vol. 397, Proceedings of the conference held 20-24 August, 2007, at Trinity Col

Astronomy and Astrophysics

Astronomy

1

Scientific paper

Nonlinear force-free extrapolations are used to determine the 3D nature of the coronal magnetic field. The nonlinear force-free fields require knowledge of the vector magnetic field as boundary conditions at the photospheric or chromospheric level. The development of new vector magnetographs such as Hinode/SOT and SDO/HMI will certainly enhance the science that can be done by combining vector field measurements and nonlinear force-free extrapolations. Here, therefore, we summarize our current work on the key properties of a magnetic configuration: geometry, magnetic energy, magnetic helicity, connectivity and magnetic topology. Physical insights deduced from the magnetic configurations are discussed.

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