Including stereoscopic information in the reconstruction of coronal magnetic fields
Abstract
We present a method to include stereoscopic information about the three-dimensional structure of flux tubes into the reconstruction of the coronal magnetic field. Due to the low plasma beta in the corona we can assume a force-free magnetic field, with the current density parallel to the magnetic field lines. Here we use linear force-free fields for simplicity. The method uses the line-of-sight magnetic field on the photosphere as observational input. The value of α is determined iteratively by comparing the reconstructed magnetic field with the observed structures. The final configuration is the optimal linear force-free solution constrained by both the photospheric magnetogram and the observed plasma structures. As an example we apply our method to SOHO MDI/EIT data of an active region. In the future it is planned to apply the method to analyse data from the SECCHI instrument aboard the STEREO mission.
- Publication:
-
Solar Physics
- Pub Date:
- August 2002
- DOI:
- 10.1023/A:1020537403934
- arXiv:
- arXiv:0801.3234
- Bibcode:
- 2002SoPh..208..233W
- Keywords:
-
- Magnetic Field;
- Flux Tube;
- Magnetic Field Line;
- Final Configuration;
- Plasma Structure;
- Astrophysics
- E-Print:
- 18 pages, 7 figures