Detection of Small-Scale Dynamics in the Emission Corona

Abstract

AbstractHigh-time records of green (530.3 ran) and red (637.4 nm) coronal line intensities display many occasional short-term variations of different types (oscillations in the range from 5 s to 5 min, non-periodic small or abrupt brightness observed in the line or both in the line and background). The distribution of these features around the Sun is non-uniform, and the amplitude of 5 min oscillations decreases rapidly with the height above the solar surface.