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Are Solar P Modes Correlated?

Published online by Cambridge University Press:  08 February 2017

T. Foglizzo ,
R.A. Garcí  and
The GOLF Team
T. Foglizzo
Affiliation:
Service d'Astrophysique, DAPNIA/DSM, CE-Saclay, 91191 Gif-sur- Yvette, France
R.A. Garcí
Affiliation:
Service d'Astrophysique, DAPNIA/DSM, CE-Saclay, 91191 Gif-sur- Yvette, France

Abstract

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We have studied the statistical properties of the energy of individual p modes, extracted from 310 days of GOLF data near the solar minimum. The exponential distribution of the energy of each mode is clearly seen. The modes are found to be uncorrelated with a ±0.6% accuracy, thus supporting the hypothesis of stochastic excitation by the solar convection.

The same analysis performed on the same modes just before the solar maximum, using IPHIR data, rejects the hypothesis of no correlation at a 99.3% confidence level. A simple model suggests that 31.3 ± 9.4% of the energy of each mode is coherent among the modes studied in IPHIR data, corresponding to a mean correlation of 10.7 ± 5.9%.

Type
IV. Solar Small-Scale Structure
Information
Symposium - International Astronomical Union , Volume 185: New Eyes to See Inside the Sun and Stars , 1998 , pp. 223 - 224
Copyright
Copyright © Kluwer 1998 

References

Baudin, F., Gabriel, A., Gibert, D., Pallé, P.L., Regulo, C., 1996, A&A 311, 1024 Google Scholar
Foglizzo, T., García, R.A., Boumier, P., Charra, J., Gabriel, A.H., Grec, G., Robillot, J.-M., Roca Cortés, T., Turck-Chièze, S., Ulrich, R.K. 1997, A&A (in press) Google Scholar
Goldreich, P., Keeley, D.A., 1977, ApJ 211, 934 CrossRefGoogle Scholar
Woodard, M., 1984, , University of California, San Diego Google Scholar