Present state of the study of 160-minutes solar oscillation

Details Present state of the study of 160-minutes solar oscillation Present state of the study of 160-minutes solar oscillation

Nov 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981soph...74...65s&link_type=abstract

(ESA and European Physical Society, ESLAB Symposium on Physics of Solar Variations, 14th, Scheveningen, Netherlands, Sept. 16-19

Physics

5

Periodic Variations, Solar Oscillations, Solar Physics, Telluric Lines, Chemical Composition, Data Correlation, Doppler Effect, Infrared Radiation, Iron, Solar Radio Emission, Solar Spectra, Spectroheliographs

Scientific paper

A summary is presented of research into possible mechanisms for the 160 min oscillations observed in the Fe I 5124 A line of the sun. The oscillations were proved to be of solar origin with periodograms of solar and telluric lines; the telluric lines showed no oscillation. Further observations of oscillations in IR brightness and radioemission of the sun are recommended; studies of rotational periodic extinction of the 160 min oscillations failed to find a correlation. A currently accepted high g-mode of dipole or quadrupole harmonic is noted to lack explanations of triggering mechanisms, uniqueness of the 160-min cycle, and chemical composition.

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