Physics
Scientific paper
Aug 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984soph...94..133s&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 94, Aug. 1984, p. 133-150. Research supported by the Institut National d'Astronomie et de G
Physics
23
Carbon, H Alpha Line, Solar Flares, Solar Spectra, Stellar Mass Ejection, Doppler Effect, Ejecta, Kinetic Energy, Pressure Gradients, Spectroheliographs, Sunspots
Scientific paper
The mass ejections of 1 September, 1980 are studied from observations obtained with the MSDP spectrograph and with the Ultraviolet Spectrometer and Polarimeter aboard the Solar Maximum Mission satellite. The analysis is focused on observations in the chromospheric H-alpha line and the transition region C IV 1548 A line. It is noted that cold and hot material had the same projection, although the upward C IV velocity structure was more extended than the H-alpha one. It is shown that the observed contrast of the H-alpha absorbing structure can be interpreted in terms of a dynamic cloud model overlying the chromosphere. Radial velocities of 25-30 km/s and -40 km/s are estimated for the first and second phases of ejection, respectively.
Martres Marie-Josephe
Mein Pierre
Schmieder Brigitte
Tandberg-Hanssen Einar
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