期刊
ASTROPHYSICAL JOURNAL
卷 669, 期 1, 页码 L57-L60出版社
UNIV CHICAGO PRESS
DOI: 10.1086/523352
关键词
sun : granulation; sun : magnetic fields; sun : photosphere; sunspots
资金
- STFC [PP/D002907/1] Funding Source: UKRI
- Science and Technology Facilities Council [PP/D002907/1] Funding Source: researchfish
An analysis of high-resolution G-band images of active region NOAA 10930 is presented. The observations were recorded with the Broadband Filter Imager (BFI) attached to the Solar Optical Telescope ( SOT) on board the Hinode mission. We observed dark lanes in umbral dots up to six folds in larger ones. Formation of umbral dots from dark core penumbral filament shows dark lanes. The evolution of the light bridge from the dark core penumbral filament is observed, which further disintegrates into umbral dots. These observations are compatible with the simulations of three-dimensional radiative magnetoconvection with gray radiative transfer in sunspot umbra by Schussler & Vogler, which support the notion that these structures appear as a result of magnetoconvection.
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