A sunspot periodicity and its possible relation to solar rotation. Scientific technical report
Technical Report
·
OSTI ID:5792204
A least-squares power-spectrum analysis of 122 years of Zurich daily sunspot numbers yields a statistically significant peak at 12.0715 +- .002 days period. This feature of the sunspot spectrum may be associated with the peak at 12.22 days (sideral) which Dicke (1976) found in his oblateness data, and may be attributable to the sun's core if it rotates at either 12.0715 days or 24.1430 days period (synodic).
- Research Organization:
- Stanford Univ., CA (USA). Inst. for Plasma Research
- OSTI ID:
- 5792204
- Report Number(s):
- AD-A-066613
- Country of Publication:
- United States
- Language:
- English
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