Hostname: page-component-76fb5796d-5g6vh Total loading time: 0 Render date: 2024-04-26T05:21:42.751Z Has data issue: false hasContentIssue false
  • English
  • Français

New Time-distance helioseismology results from the SOI/MDI experiment

Published online by Cambridge University Press:  25 May 2016

T.L. Duvall Jr. ,
A.G. Kosovichev  and
P.H. Scherrer
T.L. Duvall Jr.
Affiliation:
Laboratory for Astronomy and Solar Physics, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
A.G. Kosovichev
Affiliation:
W. W. Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA 94305, USA
P.H. Scherrer
Affiliation:
W. W. Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA 94305, USA

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The SOI/MDI experiment on SOHO has some unique capabilities for time-distance helioseismology. The great stability of the images observed without benefit of an intervening atmosphere is quite striking. It has made it possible for us to detect the time of flight for separations of points as small as 2.4 Mm in the high-resolution mode of MDI (0.6 arcsec/pixel). This has enabled us to detect the supergranulation flow beneath the surface. Using a tomographic inversion technique, we can now study the 3-dimensional evolution of the flows near the solar surface.

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. 83 - 89
Copyright
Copyright © Kluwer 1997 

References

D'Silva, S. (1996) Astrophys. J., 469, 964.Google Scholar
D'Silva, S., Duvall, T.L. Jr., Jefferies, S.M. & Harvey, J.W. (1996) Astrophys. J., 471, 1030.Google Scholar
Duvall, T.L. Jr., Jefferies, S.M., Harvey, J.W., & Pomerantz, M.A. (1993) Nature, 362, 430.Google Scholar
Duvall, T.L. Jr., D'Silva, S., Jefferies, S.M., Harvey, J.W., & Schou, J. (1996a) Nature, 379, 235.Google Scholar
Duvall, T.L. Jr., Kosovichev, A.G., Scherrer, P.H., & Milford, P.N. (1966) BAAS, 188, 49.08.Google Scholar
Kosovichev, A.G. (1996) Astrophys. J., 461, L55.Google Scholar
Kosovichev, A.G. & Duvall, T.L. Jr. (1997) in Solar Convection and Oscillations and their Relationship, eds Christensen-Dalsgaard, J., Pijpers, F. & Rosenthal, C.S., Proc. of SCORe'96 Workshop, Aarhus (Denmark), May 27-31, 1996, Kluwer Acad. Publ, in press.Google Scholar