Titlebook: Helioseismic Diagnostics of Solar Convection and Activity; Thomas L. Duvall,John W. Harvey,Zdeněk ?vestka Book 2001 Springer Science+Busin

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On the Twist of Emerging Flux Loops in the Solar Convection Zoneed by Longcope and Klapper, generalizing the original formulation for the dynamics of untwisted thin flux tubes by Spruit. The generalized formulation includes the description of torsional Alf vén waves and takes into account the coupling of the writhing motion of the tube axis to the change in the

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Time-Distance Helioseismology With , Modes as a Method for Measurement of Near-Surface Flowsc field. Previous flow measurements of Doppler surface rotation, small magnetic feature rotation, supergranular pattern rotation, and surface meridional circulation have been confirmed. In addition, the flow in supergranules due to Coriolis forces has been measured. The spatial and temporal power sp

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Calculation of the Sun’s Acoustic Impulse Response by Multi-dimensional Spectral Factorizationtion in one-dimensional space is Kolmogorov’s Fourier domain spectral-factorization method. The helical coordinate system maps two-dimensions to one. Likewise a three-dimensional volume is representable as a concatenation of many one-dimensional signals. Thus concatenating a cube of helioseismic dat

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Ray Travel Time and Distance for the Planar Polytropeound that an adiabatically stratified polytrope yields non-dispersed wave fields for a full circuit of a ray through a trapping region. Non-adiabacity, however, leads to dispersion, and a consequent loss of correlation with successive circuits of the trapping region. An acoustic waveguide with fixed

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Acoustic Imaging of Solar Active Regions (Invited Review)t the solar surface. The constructed signals contain both intensity information and phase information. The intensity is computed by summing the squared amplitude of the constructed signal over time. The phase of constructed signals can be studied by the cross-correlation function between the time se

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