Heat transfer in sunspot penumbrae. Origin of dark-cored penumbral filaments
Context: Observations at 0.1 arcsec have revealed the existence of dark cores in the bright filaments of sunspot penumbrae. Expectations are high that such dark-cored filaments are the basic building blocks of the penumbra, but their nature remains unknown. Aims: We investigate the origin of dark cores in penumbral filaments and the surplus
Ruiz Cobo, B. et al.
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2008