Back to Volume
Paper: Helioseismology from SODISM and HMI Intensity Images
Volume: 478, Fifty Years of Seismology of the Sun and Stars
Page: 151
Authors: Corbard, T.; Salabert, D.; Boumier, P.; PICARD team
Abstract: Continuum intensity images from PICARD/SODISM and SDO/HMI covering a 209-day 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, important gaps, and CCD persistence effects. SODISM intensity 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, however, shows that the results remain compatible within one standard deviation of HMI formal errors.
Back to Volume