Physics
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009spd....40.0301g&link_type=abstract
American Astronomical Society, SPD meeting #40, #3.01; Bulletin of the American Astronomical Society, Vol. 41, p.809
Physics
Scientific paper
The realistic 3D radiative-hydrodynamic simulations of the upper layers of solar convection provide a perfect opportunity to validate various techniques, widely used in solar physics and helioseismology. Our aim is to perform multiwavelength analysis of large scale flows. We analyze the simulated intensity and velocities at certain heights in the solar atmosphere, and compare our results with the outcome of the similar analysis of the SOHO/MDI and Hinode observations. To fine tune the comparison, we use the instrumental response functions to weigh the simulated parameters at different heights to emulate the observational lines. We find the remarkable similarity between the simulated and observed power spectra, their spatial parts, and time-distance diagrams. This demonstrates one more time that the simulations can be efficiently used to perform and validate local helioseismology techniques, and to study solar flows and structures beneath the surface, inaccessible for direct observations.
Benson Dave
Georgobiani Dali
Kosovichev Aleksandr G.
Nordlund Aake
Stein Robert F.
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