An Investigation of Systematic Errors in MDI Mode Parameters

Details An Investigation of Systematic Errors in MDI Mode Parameters An Investigation of Systematic Errors in MDI Mode Parameters

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sp31a24s&link_type=abstract

American Geophysical Union, Spring Meeting 2001, abstract #SP31A-24

Physics

7522 Helioseismology

Scientific paper

As described at this meeting by Howe et al., there are significant differences between the p- and f-mode parameters fitted by the MDI and GONG projects. Some of these problems seem to originate in the MDI data and/or the analysis methods which has been used for most of the MDI data analysis. Also subtle, but highly suspicious, features are seen internally in the MDI data. In this poster we will examine some of the possible explanations for these problems. In particular we will examine the effects of the optical distortions in MDI and those of the errors in some of the geometric parameters used for describing the raw images. We will also examine some of the approximations made in the analysis and see what effects they may have.

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