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Pioneering Works on Ring Diagram Analysis with Irene González Hernández. Jesús Patrón 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)
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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.