Mathematics – Dynamical Systems
Scientific paper
Sep 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987soph..109...59r&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 109, no. 1, 1987, p. 59-79.
Mathematics
Dynamical Systems
19
H Alpha Line, Magnetic Flux, Plasma Turbulence, Solar Corona, Solar Prominences, Stellar Mass Ejection, Current Sheets, Dynamical Systems, Energy Storage, Kinetic Energy, Solar Activity, Solar Flares
Scientific paper
Hα observations, using the Multichannel Subtractive Double Pass (MSDP) spectrograph operating on the Meudon Solar Tower, have been made of an active region filament which undergoes a "disparition brusque". The period of observation was from 10:45 to 13:30 UT on 22 June, 1981. Velocity and intensity fluctuations in Hα were measured. The proper motions of ejecta were followed allowing their trajectories and vector velocities to be determined. To model the dynamics of ejecta several models using thermal or magnetic driving forces are compared. The most promising model explains the motion as the consequence of magnetic stresses acting on an isolated magnetized plasmoid in a diverging flux tube.
Malherbe Jean-Marie
Mein Pierre
Raadu Michael A.
Schmieder Brigitte
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