The kinematic processes in solar prominences and flares and their spectral features

Physics

Scientific paper

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Kinematics, Mass Flow Rate, Mass Transfer, Solar Flares, Solar Prominences, Solar Spectra, Emission Spectra, H Lines, Radial Velocity, Solar Activity, Solar Atmosphere, Solar Limb, Solar Physics, Velocity Distribution

Scientific paper

In this paper various models of mass motions in solar prominences and flares, such as expansion, contraction and rotation without or with depth gradients, are considered. The variation of the source function with depth is also taken into account. Under these conditions the profiles of the first Balmer lines are calculated. The various effects of mass motions on spectral lines are studied. The authors have established four methods for the derivation of the velocities of motions as well as their gradients from the corresponding spectral features. These methods have been preliminarily applied to observational data, mainly those of the spectra-spectroheliograph (SSHG) of the Yunnan Observatory.

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