Technical Comments

Response to 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.1170433

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Our analysis of satellite data from the Reuven Ramaty High-Energy Spectroscopic Imager revealed a strong correlation with a magnetic proxy, leading to an anomalous increase of the solar oblateness. We modeled this effect to yield an oblateness measurement of an assumed underlying nonmagnetic Sun. Kuhn et al. note that this measurement could be confused with a systematic spatial brightness variation. The existing data on this are ambiguous.

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