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arXiv · 1307.8372

Helioseismology from SODISM and HMI Intensity Images

Thierry Corbard·David Salabert·Patrick Boumier
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Abstract

Continuum intensity images from PICARD/SODISM and SDO/HMI covering a 209 days period in 2011 are analyzed in order to extract mode parameters for spherical harmonics up to $l=100$. SODISM helioseismology signal is affected by the low orbit of PICARD and by important gaps and CCD persistence effects. SODISM intensity signal has a lower signal to noise ratio and duty cycle than HMI and less modes were successfully fitted over the same period. A comparison of the rotation profiles obtained from both sets of continuum images shows however that the results remain compatible within one standard deviation of HMI formal errors.

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Thierry Corbard, David Salabert, Patrick Boumier. 2013-07-31. Helioseismology from SODISM and HMI Intensity Images. https://arxiv.org/abs/1307.8372

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