Schüssler, Manfred, Shelyag, Sergiy, Berdyugina, Svetlana, Vögler, Alexander and Solanki, Sami K. (2003) Why Solar Magnetic Flux Concentrations Are Bright in Molecular Bands. The Astrophysical Journal, 597 (2). L173-L176. ISSN 0004-637X
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Abstract
Using realistic ab initio simulations of radiative magnetoconvection, we show that the bright structures in images taken in the "G band," a spectral band dominated by lines of the CH molecule, precisely outline small-scale concentrations of strong magnetic fields on the visible solar surface. The brightening is caused by a depletion of CH molecules in the hot and tenuous magnetic structures, thus confirming the model of radiatively heated magnetic flux concentrations. These results provide a firm basis for observational studies of the evolution and dynamics of the small-scale solar magnetic field derived through "proxy magnetometry" with G-band images.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Sun: magnetic fields; Sun: photosphere |
| Subjects: | F300 Physics F500 Astronomy G100 Mathematics |
| Department: | Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering |
| Depositing User: | Sergiy Shelyag |
| Date Deposited: | 23 May 2016 10:33 |
| Last Modified: | 01 Aug 2021 02:16 |
| URI: | http://nrl.northumbria.ac.uk/id/eprint/26920 |
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