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  • SOLAR PHYSICS  (2)
  • 1
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    The solar cycle - A central-source wave theory (1989)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Studies stimulated by the interpretation of the Elatina formation in South Australia as a fossil record of solar activity have led to discoveries of previously unnoticed features of the sunspot cycle record and to a theory of origin of the sunspot cycle that postulates a solar core in torsional motion and a magnetomechanical wave that couples to the photosphere. The considerations supporting the solar interpretation of the Elatina formation are gathered together.
    Keywords: SOLAR PHYSICS
    Type: Astronomical Society of Australia, Proceedings (ISSN 0066-9997); 8; 2, 19; 145-147
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Three-halves law in sunspot cycle shape (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Evidence is provided of a nonlinear effect consisting of a 3/2 power law in annual mean sunspot numbers since 1700. With correction for this nonlinearity, it has been possible to reproduce theoretically the well-known Waldmeier relation between rise time and maximum sunspot number, in addition to other features of the 11 yr sunspot curve such as a break in the decline of strong 11 yr cycles. Eighteenth century sunspot numbers are found to fit theoretical semicycle shapes well. The present model suggests an upward travelling 22 yr wave launched by a reciprocating magnetic oscillator deep in the sun.
    Keywords: SOLAR PHYSICS
    Type: Royal Astronomical Society, Monthly Notices (ISSN 0035-8711); 230; 535-550
    Format: text
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    NASA TECHNICAL REPORTS
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