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Structure of the solar oscillation with period near 160 minutes

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Abstract

The solar oscillation with period near 160 min is found to be unique in a spectrum computed over the range of periods from about 71 to 278 min. Our best estimate of the period is 160.0095 ± 0.001 min, which is different from 160 min (1/9 of a day) by a highly significant amount. The width of the peak is approximately equal to the limiting resolution that can be obtained from an observation lasting 6 years, which suggests that the damping time of the oscillations is considerably longer than 6 years. A suggestion that this peak might be the result of a beating phenomenon between the five minute data averages and a solar oscillation with period near five minutes is shown to be incorrect by recomputing a portion of the spectrum using 15 s data averages.

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Authors and Affiliations

  1. Institute for Plasma Research, Stanford University, 94305, Stanford, CA, USA

    Philip H. Scherrer & John M. Wilcox

Authors
  1. Philip H. Scherrer
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  2. John M. Wilcox
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Additional information

Proceedings of the 66th IAU Colloquium: Problems in Solar and Stellar Oscillations, held at the Crimean Astrophysical Observatory, U.S.S.R., 1–5 September, 1981.

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Scherrer, P.H., Wilcox, J.M. Structure of the solar oscillation with period near 160 minutes. Sol Phys 82, 37–42 (1983). https://doi.org/10.1007/BF00145543

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  • DOI: https://doi.org/10.1007/BF00145543

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