A Comparison Of Solar High-degree p-mode Parameters From HMI And MDI

Details A Comparison Of Solar High-degree p-mode Parameters From HMI And MDI A Comparison Of Solar High-degree p-mode Parameters From HMI And MDI

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011spd....42.1606r&link_type=abstract

American Astronomical Society, SPD meeting #42, #16.06; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

Solar acoustic modes have been successfully used to make inferences about the solar interior. The comparison of independent contemporaneous data sets is important to test the reliability of our inferences. Here we compare helioseismic data from the Michelson Doppler Imager (MDI) on board SOHO with Helioseismic and Magnetic Imager (HMI) on board SDO using spherical harmonic decomposition and ring-diagram analysis. We will focus on the analysis of high-degree modes. They propagate through the outer layers of the Sun giving valuable information about this region. This interesting region is the seat of the near-surface shear layer, where the excitation and damping mechanisms are believed to be concentrated and where the effects of the equation of state are felt most strongly.

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