Titlebook: Helioseismology, Asteroseismology, and MHD Connections; Laurent Gizon,Paul Cally,John Leibacher Book 2008 Springer-Verlag New York 2008 GO

micronized

,Can We Constrain Solar Interior Physics by Studying the?Gravity-Mode Asymptotic Signature?,umed that high-frequency . modes give information about the structure of the solar interior whereas low-frequency . modes are more sensitive to the solar dynamics (the internal rotation). In this work, we develop a new methodology, based on the analysis of the almost constant separation of the dipol

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alabaster

Acoustic Radius Measurements from MDI and GONG,nal to the solar acoustic radius. We analyze the ACF of MDI and GONG spherical-harmonic-coefficient time series for degrees .=0?3. Acoustic radius measurements obtained from the first dominant peak locations of the ACF show a significant anticorrelation with solar cycle. This technique can be a usef

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Spatio-Temporal Analysis of Photospheric Turbulent Velocity Fields Using the Proper Orthogonal Decods computed from high-resolution data coming from the SOHO/MDI instrument. Using this technique, we are able to identify and characterize the different dynamical regimes acting in the system. All of the POD modes are characterized by two well-separated peaks in the frequency spectra. In particular,

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浪蕩子

,Analysis of MDI High-Degree Mode Frequencies and?their Rotational Splittings,by applying spherical harmonic decomposition to full-disk solar images observed by the Michelson Doppler Imager onboard the . spacecraft. Global helioseismology analysis of high-degree modes is complicated by the fact that the individual modes cannot be isolated, which has limited so far the use of

engender

Recent Developments in Local Helioseismology,ructures and dynamics in the quiet Sun and active regions. In this short review we focus on recent developments, and in particular on a number of current issues, including the sensitivity of different measures of travel time and testing the forward modelling used in local helioseismology. We discuss

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antecedence

,Three-Dimensional MHD Wave Propagation and Conversion to Alfvén Waves near the Solar Surface. I. Ditechniques, including ray theory, perturbation theory, differential eigensystem analysis, and direct numerical simulation. These show that significant energy may be transferred between the fast and slow modes in the neighbourhood of the equipartition layer where the Alfvén and sound speeds coincide.