Sunspot periodicity and its possible relation to solar rotation
Journal Article
·
· Astrophys. J., Lett.; (United States)
A least-squares power-spectrum analysis of 122 years of Zurich daily sunspot numbers yields a statistically significant peak at a 12.0715 +- 0.002 day period. This feature of the sunspot spectrum may be associated with the peak at 12.22 days (Sidereal) which Dicke found in his oblateness data, and may be attributable to the Sun's core if it rotates at either a 12.0715 day or a 24.1430 day period (synodic).
- Research Organization:
- Institute for Plasma Research, Stanford University
- OSTI ID:
- 6271776
- Journal Information:
- Astrophys. J., Lett.; (United States), Journal Name: Astrophys. J., Lett.; (United States) Vol. 227:3; ISSN AJLEA
- Country of Publication:
- United States
- Language:
- English
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