The rotational spectrum of g-modes in the sun

Details The rotational spectrum of g-modes in the sun The rotational spectrum of g-modes in the sun

Jan 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...264..667w&link_type=abstract

Astrophysical Journal, Part 1, vol. 264, Jan. 15, 1983, p. 667-676.

Astronomy and Astrophysics

Astrophysics

81

Rotational Spectra, Solar Activity, Solar Oscillations, Solar Rotation, Solar Spectra, Angular Velocity, Solar Interior, Spectral Line Width, Stellar Structure

Scientific paper

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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