| Issue |
EAS Publications Series
Volume 55, 2012
4th French-Chinese Meeting on Solar Physics - Understanding Solar Activity: Advances and Challenges
|
|
|---|---|---|
| Page(s) | 83 - 86 | |
| Section | Magnetic Field and Polarization Measurements and Theory | |
| DOI | https://doi.org/10.1051/eas/1255011 | |
| Published online | 27 June 2012 | |
M. Faurobert, C. Fang and T. Corbard (eds)
EAS Publications Series, 55 (2012) 83-86
Inversion of Zeeman Line Profiles Using Central Moments
1
LESIA, Observatoire de Paris, CNRS, UPMC Paris 06, Université
Paris Diderot, 5 place Jules
Janssen, 92195
Meudon,
France
2
National Solar Observatory, operated by the Association of
Universities for Research in Astronomy, Inc. (AURA), for the National Science Foundation, Sacramento
Peak, PO Box 62, Sunspot, NM
88349,
USA
3
UMR 6525 H. Fizeau, Université de Nice Sophia Antipolis, CNRS,
Observatoire de la Côte d’Azur, Campus Valrose, 06108
Nice,
France
A new inversion method derived from central moments of Zeeman line profiles (ICM), is used to determine magnetic field vectors (Mein et al. 2011). Two quantities A1 and A2 combining moments of profiles I ± S (S = Q,U,V) are nearly linear functions of the longitudinal and transverse components and lead to the field components through very fast iterations. Optimized exponents reduce noise effects. The ICM inversion does not require Milne Eddington approximation and can be used in a wide range of solar models.
© EAS, EDP Sciences 2012