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Pioneering Works on Ring Diagram Analysis with Irene González Hernández

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

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  1. Pioneering Works on Ring Diagram Analysis with Irene González Hernández JesúsPatrón Recio September 3rd, 2014

  2. 1993: The IAC Helio- and Astro-seismology Group 21 years ago…..

  3. 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

  4. Solar Surface coverageevolution (1988-1998)

  5. Solar Surface coverageevolution(F. Hill, 1988)

  6. Solar Surface coverageevolution(J. Patrón, 1994)

  7. Solar Surface coverageevolution(I. González, 1998)

  8. Improvementsonfittingmethods

  9. Reliability of ring diagramanalysis SOI velocityimages TON Intensityimages

  10. Reliability of ring diagramanalysis

  11. Time evolution of velocityflows

  12. Solar rotation at subphotosphericlayers

  13. Meridional flows

  14. Synopticmaps of horizontal velocityflows

  15. 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.

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