Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsh13a1507z&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #SH13A-1507
Astronomy and Astrophysics
Astrophysics
[7522] Solar Physics, Astrophysics, And Astronomy / Helioseismology
Scientific paper
Solar Dynamics Observatory (SDO) will be launched shortly, and high-resolution helioseismic data from Heliosesimic and Magnetic Imager (HMI) will soon be available. We have developed a data analysis procedure based on the time-distance helioseismology method, to automatically process 2 TB/day of solar oscillation data from the HMI instrument. The pipeline will provide the following data to the solar physics community: nearly whole disk maps of acoustic travel times, subsurface flow fields and sound-speed perturbation maps every eight hours. The data products include also real-time updated synoptic maps for subsurface flows and sound-speed perturbations. For the helioseismology community, the pipeline will provide intermediate data products such as cross-covariances of solar oscillations. This poster explains how we process the observational data, how we perform the travel-time measurements, how we derive the sensitivity kernels for inversions, and how we perform and test the inversion results.
Beck John Gunther
Birch Aaron C.
Couvidat S. P.
Duvall Thomas L.
Kosovichev Aleksandr G.
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