Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980s%26t....60..102k&link_type=abstract
Sky and Telescope, vol. 60, Aug. 1980, p. 102, 103.
Astronomy and Astrophysics
Astronomy
Solar Activity, Solar Corona, Spaceborne Astronomy, Coronagraphs, Oso-7, Skylab Program, Solar Flares, Solar Spectra, X Ray Spectroscopy
Scientific paper
Observations of the solar corona by the DOD satellite P78-1 are discussed and compared with previous findings by OSO-7 and Skylab. The satellite carries a coronagraph and several other solar instruments, including X-ray spectrometers for analyzing the spectra of solar flares and for monochromatic imaging of X-ray emission from active regions. Computer analysis of the pictures obtained in a three-day span in May 1979 shows that many of the day-to-day changes in the streamers result from the rapid ejection of coronal matter, which disrupts the streamers and leaves gradually fading structures in their place. The findings of P78-1 as well as OSO-7 and Skylab seem to agree on a connection between eruptive prominences and coronal transients, but the exact nature of the association is not yet clear.
Howard Russ A.
Koomen Martin J.
Michels Donald J.
Sheeley Neil R. Jr.
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