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Plane-wave analysis of SOI data

Published online by Cambridge University Press:  25 May 2016

R. S. Bogart ,
L. A. Discher De Sá ,
I. González Hernández ,
J. Patrón Recio ,
D. A. Haber ,
J. Toomre ,
F. Hill ,
E. J. Rhodes Jr. ,
Y. Xue  and
The SOI Ring Diagrams Team
R. S. Bogart
Affiliation:
Stanford University
L. A. Discher De Sá
Affiliation:
Stanford University
I. González Hernández
Affiliation:
Instituto de Astrofísica de Canarias
J. Patrón Recio
Affiliation:
Instituto de Astrofísica de Canarias
D. A. Haber
Affiliation:
JILA
J. Toomre
Affiliation:
JILA
F. Hill
Affiliation:
National Solar Observatory
E. J. Rhodes Jr.
Affiliation:
University of Southern California
Y. Xue
Affiliation:
University of Southern California

Abstract

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The unprecedented combination of spatial resolution and stability achieved by the Solar Oscillations Investigation/Michelson Doppler Imager on SOHO has opened up new opportunities for the analysis of solar surface oscillations of high spatial frequencies. In this regime the oscillations are essentially plane waves, amenable to the techniques of ring-diagram analysis of their three-dimensional power spectra. This approach holds the promise of measuring fluid motions and possibly magnetic fields in spatially-resolved structures within the uppermost levels of the convective envelope, a region unresolved by the global modes. Atmospheric g-modes trapped above the photosphere may also be detectable. We review the first results of plane-wave analysis of various types of SOI data and comparisons with the analyses of comparable ground-based datasets.

Type
Part I: Helioseismology: From ground or space, a worldwide cooperation
Information
Symposium - International Astronomical Union , Volume 181: Sounding Solar and Stellar Interiors , 1997 , pp. 111 - 118
Copyright
Copyright © Kluwer 1997 

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