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Observation of Low-Degree Modes from SOHO/MDI Using Optimal Masks

Published online by Cambridge University Press:  08 February 2017

T. Toutain ,
A. Kosovichev  and
T. Appourchaux
T. Toutain
Affiliation:
Nice Observatory, B.P. 4229, F-06304 Nice cedex
A. Kosovichev
Affiliation:
HEPL, Stanford University, USA
T. Appourchaux
Affiliation:
ESTEC, ESA, The Netherlands

Extract

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The overlap of peaks of split multiplets in oscillation power spectra and the leakage of other degree modes could significantly affect the measurements of the rotational frequency splitting. We have developed optimal masks which allow to isolate individual components of the multiplets. The method is applied to the Michelson Doppler Imager Low-l data. The results of the mode frequency measurements are reported.

Type
III. Large-Scale Structure of the Sun
Information
Symposium - International Astronomical Union , Volume 185: New Eyes to See Inside the Sun and Stars , 1998 , pp. 179 - 180
Copyright
Copyright © Kluwer 1998 

References

Appourchaux, T. et al., 1997, Sol. Phys. 170, 24 Google Scholar
Appourchaux, T. and Gizon, L., 1997, these proceedings Google Scholar
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Scherrer, P.H., et al., 1995, Sol. Phys. 162, 129 Google Scholar