Observation of sectored structure in the
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R. A. Howard; M. J. Koomen
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Article
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1974
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Springer
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English
β 433 KB
Daily images of the white light corona between 3 and 10 R| have been recorded by a coronagraph aboard the OSO-7 unmanned satellite since October 3, 1971. Images for the years 1972 and 1973 have been examined for persistent coronal forms. For most of 1972 there passed over the Sun's east limb a regul