EUROPEAN SPACE AGENCY

Wave absorption and moat flow in AR9787

DOI: 10.1088/1742-6596/271/1/012022 Bibcode: 2011JPhCS.271a2022R

Thompson, M. J.; Roth, M.

Germany, United States

Abstract

We present the results of a study of the wave absorption and the moat flow around the sunspot in AR9787 (the "HELAS sunspot", so-called because it has been the object of in-depth study at a HELAS workshop) using Fourier-Hankel decomposition of the oscillatory wave field. We carry out inversions both for the flow speed and for the sound speed perturbation as a function of depth. The results are compared with results from time-distance helioseismology.

2011 • GONG-SoHO 24: A New Era of Seismology of the Sun and Solar-Like Stars
SOHO 1
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