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Title:
The rotational spectrum of g-modes in the sun
Authors:
Wolff, C. L.
Affiliation:
AA(NASA, Goddard Space Flight Center, Laboratory for Planetary Atmospheres, Greenbelt, MD)
Publication:
Astrophysical Journal, Part 1, vol. 264, Jan. 15, 1983, p. 667-676. (ApJ Homepage)
Publication Date:
01/1983
Category:
Solar Physics
Origin:
STI
NASA/STI Keywords:
Rotational Spectra, Solar Activity, Solar Oscillations, Solar Rotation, Solar Spectra, Angular Velocity, Solar Interior, Spectral Line Width, Stellar Structure
DOI:
10.1086/160640
Bibliographic Code:
1983ApJ...264..667W

Abstract

Observations and calculations are presented which strongly suggest that the unique sequence of rotation rates due to g-modes is active in the sun. It is found that all angular harmonics from 1 = 2-11 appear to be resolved, while higher harmonics up to at least 1 = 20 also seem to be active. The extreme narrowness of many of the spectral lines indicates that the g-modes are locked in sets of constant 1 by a local mechanism which excites the modes and possibly regulates the long-term precision of their rotation. These sets act as a system of resonant, or nearly resonant, clocks which impose a degree of periodicity upon solar activity and measure the mean solar interior rotation

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