How much do helioseismological inferences depend upon the assumed reference model?

Details How much do helioseismological inferences depend upon the assumed reference model? How much do helioseismological inferences depend upon the assumed reference model?

May 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...194.5603b&link_type=abstract

American Astronomical Society, 194th AAS Meeting, #56.03; Bulletin of the American Astronomical Society, Vol. 31, p.912

Computer Science

Sound

1

Scientific paper

We investigate systematic uncertainties in determining the profiles of the solar sound speed and the density by helioseismological techniques. We find that rms uncertainties averaged over the sun ~ 0.02%-0.04% are contributed to the sound speed profile by each of three sources: 1) the choice of assumed reference model, 2) the width of the inversion kernel, and 3) the measurement errors. The rms agreement between the standard solar model and the best helioseismological determinations is about 0.07%. The density profile is about an order of magnitude less well determined by the helioseismological measurements. JNB and SB are supported in part by NSF grant #PHY95-13835.

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