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Why solar magnetic flux concentrations are bright in molecular bands
journal contribution
posted on 2003-10-17, 00:00 authored by M Schüssler, Sergiy ShelyagSergiy Shelyag, S Berdyugina, A Vögler, S K SolankiUsing 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.
History
Journal
The astrophysical journal lettersVolume
597Issue
2Pagination
173 - 176Publisher
IOP PublishingLocation
Bristol, Eng.Publisher DOI
ISSN
0004-637XeISSN
1538-4357Language
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
2003, The American Astronomical SocietyUsage metrics
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