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Green corona and solar sector structureAnalysis of the green-line corona for the interval 1947-1970 suggests the existence of large-scale organization of the emission. The green-line emission at high northern latitudes (approximately 40 to 60 deg) is correlated with the emission at high southern latitudes 6, 15, and 24 days later, while the low-latitude green corona seems to be correlated on both sides of the equator with no time lag. These coronal features are recurrent with a 27-day period at all latitudes between plus or minus 60 deg, and these large-scale structures are believed to be associated with the solar magnetic sector structure. The high correlation between northern and southern high-latitude emission at 15 days time lag is explained as a signature of a two-sector structure, while four sectors are associated with the 6- and 24-day peaks.
Document ID
19740052718
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Antonucci, E.
Svalgaard, L.
(Stanford University Stanford, Calif., United States)
Date Acquired
August 7, 2013
Publication Date
May 1, 1974
Publication Information
Publication: Solar Physics
Volume: 36
Subject Category
Space Sciences
Accession Number
74A35468
Funding Number(s)
CONTRACT_GRANT: NSF GA-31138
CONTRACT_GRANT: NGR-05-020-559
CONTRACT_GRANT: N00014-67-A-0112-0068
Distribution Limits
Public
Copyright
Other

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