Technical Comments

Comment on “A Large Excess in Apparent Solar Oblateness Due to Surface Magnetism”

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Science  29 May 2009:
Vol. 324, Issue 5931, pp. 1143
DOI: 10.1126/science.1170358

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Fivian et al. (Reports, 24 October 2008, p. 560) analyzed data from the Reuven Ramaty High-Energy Solar Spectroscopic Imager satellite and reported that the Sun is more oblate than previous measurements have suggested. We argue that their threshold-based analysis yields a biased measure of the solar limb shape geometry.

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