A new sunspot umbral model and its variation with the solar cycle

• 1 July 1986
• journal article
• Published by American Astronomical Society in The Astrophysical Journal
• Vol. 306, 284-303
• https://doi.org/10.1086/164342

Abstract

Keywords

• ATMOSPHERIC MODELS
• PERIODIC VARIATIONS
• SOLAR ATMOSPHERE
• SOLAR CYCLES
• SUNSPOTS
• UMBRAS
• SOLAR ACTIVITY
• SOLAR LIMB
• SPECTRAL ENERGY DISTRIBUTION
• STELLAR MODELS