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Explore pioneering works from 1993 to 2000 on solar ring diagram analysis by Irene González Hernández and Jesús Patrón. Discover improvements in techniques, velocity flows, solar rotation, and reliability of analysis methods.
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Pioneering Works on Ring Diagram Analysis with Irene González Hernández JesúsPatrón Recio September 3rd, 2014
1993: The IAC Helio- and Astro-seismology Group 21 years ago…..
TON images • Comparison of fitting methods (12 to 4 parameters final fitting) • Reliability of ring diagram analysis (comparison of results from TON and SOI images) • Time evolution of velocity flows • SOI images • Solar rotation • Meridional flows • Velocity flows synoptic maps (main thesis work) • Thesis work: • Improvements on ring diagram techniques: • Best images: velocity versus intensity images • Maximum approximation to plane waves: longitude-latitude -> maximum circles • Avoiding projection effects: regions passing the center of the solar disc • Simplification and speeding of fitting processes • Robustness of the method: retrieving artificial velocity flows in data. • Extension to higher latitudes and complete longitude set
Reliability of ring diagramanalysis SOI velocityimages TON Intensityimages
Publications • J. Patrón; I. González; and Dean-Yi Chou and the TON team. Comparison of two Fitting Methods for Ring Diagram Analysis of Very High l Solar Oscillations. Astrophysical Journal. 485, pp. 896 - 874. 1997. • J. Patrón; I. González Hernández; and Dean-Yi Chou and the TON team. Time Evolution of Horizontal Subsurface Flows in the Sun. Astrophysical Journal. 506, pp. 450 - 455. 1998. • I. González Hernández; J. Patrón; and D.-Y. Chou and the TON team. On the Reliability of the Ring Diagram AnalysisMethod. AstrophysicalJournal. 501, pp. 408 - 413. 1998. • I. González Hernández; J. Patrón; and R. S. Bogart and the SOI Ring DiagramTeam. Meridional Flowsfrom Ring DiagramAnalysis. AstrophysicalJournalLetters. 510, pp. L153 - L156. 1999. • I. González Hernández and J. Patrón. Solar rotation in the subphotospheric layers. Solar Physics. 191(1), pp. 37 - 46. 2000. • I. González Hernández; J. Patrón; T. Roca-Cortés; R. S. Bogart; F. Hill; and E. J. Rhodes,Jr. A synopticview of thesubphotospherichorizontal velocity flows in the Sun. Astrophysical Journal. 535, pp. 454 - 463. 2000.