Initial Results from Fitting $$-Modes Using Intensity Observations from the Helioseismic and Magnetic Imager |
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| Authors: | Sylvain G Korzennik |
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| Institution: | 1.Harvard-Smithsonian Center for Astrophysics,Cambridge,USA |
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| Abstract: | The Helioseismic and Magnetic Imager project recently started processing the continuum-intensity images following global helioseismology procedures similar to those used to process the velocity images. The spatial decomposition of these images has produced time series of spherical harmonic coefficients for degrees up to \(\ell=300\), using a different apodization than the one used for velocity observations. The first 360 days of observations were processed and are made available. I present initial results from fitting these time series using my fitting method and compare the derived mode characteristics to those estimated using coeval velocity observations. |
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