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| 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. |
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