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Magnetic field rotation at high solar latitudesMeasurements of the rotation rate of polar magnetic features during 1974-76 lead to a significantly slower rotation rate than that found earlier for polar faculae in 1951-54. Similarly, the rotation rate of these features is slower than the Doppler-determined rate at polar latitudes or the rotation rate of polar filaments. It is suggested that the strong latitude rotation gradient in the subsurface magnetic flux tubes which is implied by these results may presage a very active solar maximum for cycle 21.
Document ID
19790038289
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Howard, R.
(Hale Observatories Pasadena, Calif., United States)
Date Acquired
August 9, 2013
Publication Date
October 1, 1978
Publication Information
Publication: Solar Physics
Volume: 59
Subject Category
Solar Physics
Accession Number
79A22302
Funding Number(s)
CONTRACT_GRANT: NGR-09-140-015
CONTRACT_GRANT: N00014-76-C-0113
CONTRACT_GRANT: NSF AST-75-19756
Distribution Limits
Public
Copyright
Other

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