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Solar cycle variation of large-scale coronal structuresA green line intensity variation is associated with the interplanetary and photospheric magnetic sector structure. This effect depends on the solar cycle and occurs with the same amplitude in the latitude range 60 deg N - 60 deg S. Extended longitudinal coronal structures are suggested, which indicate the existence of closed magnetic field lines over the neutral line, separating adjacent regions of opposite polarities on the photospheric surface.
Document ID
19740023173
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Antonucci, E. (Stanford Univ. CA, United States)
Duvall, T. L. (Stanford Univ. CA, United States)
Date Acquired
September 3, 2013
Publication Date
April 1, 1974
Subject Category
Space Radiation
Report/Patent Number
NASA-CR-139500
SU-IPR-569
Accession Number
74N31286
Funding Number(s)
CONTRACT_GRANT: N00014-67-A-0112-0068
CONTRACT_GRANT: NGR-05-020-559
CONTRACT_GRANT: NSF GA-31138
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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