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The Art of Fitting P-Mode Spectra

Published online by Cambridge University Press:  08 February 2017

T. Appourchaux  and
L. Gizon
T. Appourchaux
Affiliation:
ESA/ESTEC, P.O. Box 299, 2200 AG, Noordwijk, Pays-Bas
L. Gizon
Affiliation:
W. W. Hansen Experimental Physics Laboratory, Center for Space Science Astrophysics, Stanford University, Stanford, CA 94305-4085, USA

Extract

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For deriving p-mode parameters from m, v diagrammes, one has to treat correctly the statistics of the observation. The correct statistical treatment of these diagrammes was first achieved by Schou (1992) (PhD thesis, Aarhus University). Fitting p-mode spectra requires 4 major steps:

  1. 1. Compute the mode leakage matrices

  2. 2. Compute mode covariance matrices from the previous matrices

  3. 3. Compute the noise covariance matrices

  4. 4. Compute and maximize the likelihood of the observation

Type
I. Global Structure and Evolution of the Solar and Stellar Interior
Information
Symposium - International Astronomical Union , Volume 185: New Eyes to See Inside the Sun and Stars , 1998 , pp. 43 - 44
Copyright
Copyright © Kluwer 1998