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A comparison of preprocessing methods for solar force-free magnetic field extrapolation
- Source :
- Astronomy and Astrophysics; February 2011, Vol. 526 Issue: 1
- Publication Year :
- 2011
-
Abstract
- Context.Extrapolations of solar photospheric vector magnetograms into three-dimensional magnetic fields in the chromosphere and corona are usually done under the assumption that the fields are force-free. This condition is violated in the photosphere itself and a thin layer in the lower atmosphere above. The field calculations can be improved by preprocessing the photospheric magnetograms. The intention here is to remove a non-force-free component from the data.
Details
- Language :
- English
- ISSN :
- 00046361 and 14320746
- Volume :
- 526
- Issue :
- 1
- Database :
- Supplemental Index
- Journal :
- Astronomy and Astrophysics
- Publication Type :
- Periodical
- Accession number :
- ejs22890647
- Full Text :
- https://doi.org/10.1051/0004-6361/201015453