New Results of High-Resolution Helioseismology from Hinode

Details New Results of High-Resolution Helioseismology from Hinode New Results of High-Resolution Helioseismology from Hinode

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..416...41k&link_type=abstract

Solar-Stellar Dynamos as Revealed by Helio- and Asteroseismology: GONG 2008/SOHO 21 ASP Conference Series, Vol. 416, proceedings

Astronomy and Astrophysics

Astronomy

2

Scientific paper

The Solar Optical Telescope of Hinode provides unique multi-wavelength high-resolution data for local helioseismic diagnostics of the sub-surface structure and dynamics of the Sun. The helioseismology data from Hinode have allowed us for the first time to observe oscillations of very high angular degree and high frequencies, and substantially improve the spatial resolution of time-distance helioseismology in near-surface layers of the Sun, compared to the previous SOHO/MDI data. The Hinode data have also provided important insight on the nature of sunspot oscillations, and the correlated component of stochastic excitation. Initial attempts have been made to investigate the dynamics of the polar regions, critical for dynamo modeling, but previously unaccessible for helioseismology. In addition, a new type of flare-excited MHD oscillations was detected from Hinode observations of the solar flare of December 13, 2006.

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