%0 Journal Article
%T Helioseismology from SODISM and HMI Intensity Images
%A Thierry Corbard
%A David Salabert
%A Patrick Boumier
%J Physics
%D 2013
%I arXiv
%X 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.
%U http://arxiv.org/abs/1307.8372v1