NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Observation of additional low-degree 5-min modes of solar oscillationHigh-order solar oscillations with degrees l=3, 4, and 5 could be detected. The observations were made by measuring the difference between the shifts in the Fe 5,124 spectrum line from light integrated from a central circular portion of the solar disk and from an annular portion exterior to it. The frequencies of the octupole modes agree well with the values obtained from whole-disk measurements at the South Pole. A least-squares fit of the observed frequencies to values interpolated between and extrapolated from the predictions of a sequence of solar models with different chemical compositions selects two models. One, a helium-rich solution, agrees with that of similar analyses of whole-disk data. The extrapolated solution has a relatively deep convection zone, and is thus consistent with analyses of 5-min oscillations of high degree.
Document ID
19820051292
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Scherrer, P. H.
(Stanford Univ. CA, United States)
Wilcox, J. M.
(Stanford University Stanford, CA, United States)
Christensen-Dalsgaard, J.
(National Center for Atmospheric Research Boulder, CO, United States)
Gough, D.
(Cambridge University Cambridge, United Kingdom)
Date Acquired
August 10, 2013
Publication Date
May 27, 1982
Publication Information
Publication: Nature
Volume: 297
Subject Category
Solar Physics
Accession Number
82A34827
Funding Number(s)
CONTRACT_GRANT: NGR-05-020-559
CONTRACT_GRANT: N00014-76-C-0207
CONTRACT_GRANT: NSF ATM-77-20580
CONTRACT_GRANT: NAS5-24420
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available