Why Solar Magnetic Flux Concentrations Are Bright in Molecular Bands

Manfred Schüssler, Sergiy Shelyag, Svetlana Berdyugina, Alexander Vögler, Sami K. Solanki

Research output: Contribution to journalArticlepeer-review

83 Citations (Scopus)
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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.
Original languageEnglish
Pages (from-to)L173-L176
JournalThe Astrophysical Journal
Volume597
Issue number2
DOIs
Publication statusPublished - 17 Oct 2003

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