National Aeronautics and Space Administration

Living With A Star

Targeted Research and Technology

The Non-Potential Structure of Active Regions

ROSES ID: NRA-NNH04ZSS001N      Selection Year: 2005      

Program Element: Independent Investigation

Principal Investigator: Edward DeLuca

Affiliation(s): Smithsonian Astrophysical Observatory


Longitudinal and vector magnetic field measurements will be combined with coronal images to provide a three-dimensional look at magnetic structure and evolution of active regions. Using archival and new observations with TRACE, ASP and IVM we will apply recently developed magnetic field extrapolation codes and advanced image processing techniques to construct 3-D non-linear force free models of active regions that fit observed coronal structures. Filament channels and flux ropes will be included in such models and compared with observations. The topological properties of the coronal magnetic field are key to understanding the dynamics and stability of the plasma. Our approach offers a comprehensive solution to the active region topology problem with quantitative measurements of the ''goodness of fit''. Applications to currently available datasets will allow us to develop this technique before the launch of Solar-B and SDO.


Performance YearReferenceActions
1DeLuca, Edward E.; van Ballegooijen, A.; Bobra, M.; (...
1Bobra, Monica; DeLuca, E. E.; Van Ballegooijen, A. A...
1Bobra, Monica; van Ballegooijen, A. A.; DeLuca, E. E...

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