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2008MNRAS.389.1780J - Mon. Not. R. Astron. Soc., 389, 1780-1790 (2008/October-1)
solarFLAG hare and hounds: estimation of p-mode frequencies from Sun-as-star helioseismology data.
JIMENEZ-REYES S.J., CHAPLIN W.J., GARCIA R.A., APPOURCHAUX T., BAUDIN F., BOUMIER P., ELSWORTH Y., FLETCHER S.T., LAZREK M., LEIBACHER J.W., LOCHARD J., NEW R., REGULO C., SALABERT D., TOUTAIN T., VERNER G.A. and WACHTER R.
Abstract (from CDS):
We identify two sources that are the dominant contributions to the frequency bias. Both sources involve failure to model accurately subtle aspects of the observed power spectral density in the part (window) of the frequency power spectrum that is being fitted. One source of bias arises from a failure to account for the power spectral density coming from all those modes whose frequencies lie outside the fitting windows. The other source arises from a failure to account for the power spectral density of the weak l = 4 and 5 modes, which are often ignored in Sun-as-a-star analysis. The Sun-as-a-star peak-bagging codes need to allow for both sources, otherwise the frequencies are likely to be biased.
Abstract Copyright: © 2008 The Authors. Journal compilation © 2008 RAS
Journal keyword(s): methods: data analysis - Sun: helioseismology - Sun: interior
Simbad objects: 2
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