Dynamic phenomena in the visible layers of sunspots |
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Authors: | R L Moore |
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Institution: | 1. Big Bear Solar Observatory, California Institute of Technology, USA
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Abstract: | The empirical properties of the various dynamic phenomena are reviewed and interrelated with emphasis on recent observational results. The topics covered are: - Introduction
- Aperiodic Phenomena
- Externally Driven Phenomena
- Umbral Flares
- Inverse Evershed Flow
- Internally Driven Phenomena
- Penumbra
- Penumbral Grains
- Evershed Flow
- Umbra
- Umbral Dots
- Inhomogeneity of the Umbral Magnetic Field
- Umbral Turbulence
- Oscillations and Waves
- Chromosphere
- Umbra: Oscillations and Flashes
- Penumbra: Running Waves and Dark Puffs
- Photosphere
- Overview
It is proposed from the observations that umbral dots and penumbral grains are essentially the same phenomenon, and that the observational goal of highest priority with respect to both the origin of the periodic phenomena and the problem of the missing heat flux is to better determine the nature of these elementary bright features. |
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