skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Sunspot periodicity and its possible relation to solar rotation

Abstract

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).

Authors:
; ;
Publication Date:
Research Org.:
Institute for Plasma Research, Stanford University
OSTI Identifier:
6271776
Resource Type:
Journal Article
Journal Name:
Astrophys. J., Lett.; (United States)
Additional Journal Information:
Journal Volume: 227:3
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; SUN; ROTATION; SUNSPOTS; VARIATIONS; ENERGY SPECTRA; SPECTRAL FUNCTIONS; STATISTICS; FUNCTIONS; MAIN SEQUENCE STARS; MATHEMATICS; MOTION; SOLAR ACTIVITY; SPECTRA; STARS; 640104* - Astrophysics & Cosmology- Solar Phenomena

Citation Formats

Knight, J.W., Schatten, K.H., and Sturrock, P.A. Sunspot periodicity and its possible relation to solar rotation. United States: N. p., 1979. Web. doi:10.1086/182888.
Knight, J.W., Schatten, K.H., & Sturrock, P.A. Sunspot periodicity and its possible relation to solar rotation. United States. doi:10.1086/182888.
Knight, J.W., Schatten, K.H., and Sturrock, P.A. Thu . "Sunspot periodicity and its possible relation to solar rotation". United States. doi:10.1086/182888.
@article{osti_6271776,
title = {Sunspot periodicity and its possible relation to solar rotation},
author = {Knight, J.W. and Schatten, K.H. and Sturrock, P.A.},
abstractNote = {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).},
doi = {10.1086/182888},
journal = {Astrophys. J., Lett.; (United States)},
number = ,
volume = 227:3,
place = {United States},
year = {1979},
month = {2}
}