Magnetic strength analysis in the quiet Sun regions using the Mn I line at 553 nm.
Abstract
In this work we present a quantitative analysis of the magnetic field stength in quiet Sun regions using Mn I lines. The hyperfine structure (HFS) of this atom results for its 553 nm line in a change of profile if the magnetic strength is inferior to one kiloGauss. Spectropolarimetric data obtained at the THEMIS telescope is presented and analysed. With this purpose, we have developped and tested an inversion code based on a Milne-Eddington atmospheric model. Close to half the total amount of data shows enough signal in circular polarization (V) to be inverted. We have found that quiet sun regions are dominated by weak magnetic strengths (hG) but that strong intensities (kG) are not absent, being these last ones close to one quarter of the total of inverted profiles.
- Publication:
-
Memorie della Societa Astronomica Italiana
- Pub Date:
- 2007
- Bibcode:
- 2007MmSAI..78...54R
- Keywords:
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- Quiet Sun: Hyperfine structure;
- Magnetic strength inversions;
- spectroplarimetric data;
- Granular Intergranular regions;
- THEMIS