Oct 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982natur.299..704c&link_type=abstract
Nature, vol. 299, Oct. 21, 1982, p. 704-707. Research supported by the Science and Engineering Research Council.
Physics
36
Solar Oscillations, Solar Rotation, Doppler Effect, Earth Rotation, Line Of Sight, Line Spectra, Mass Distribution, Mass Flow, Radial Velocity, Solar Spectra, Velocity Measurement, Visible Spectrum
Scientific paper
Data from solar line of sight velocity measurements are presented to demonstrate the existence of a synodic signal with a 6.5 m/sec amplitude. Recordings of alternate measurements of the resonantly scattered light intensity were made at 1 sec intervals and a mean ratio for the laboratory and solar lines was calculated over a 42 sec interval, yielding 900 points each day of observation. An oscillation which was in phase at both observation points was found. A peak was found at 0.88 micro-Hz, with a 13.15 day period. The 6.6 m/sec velocity amplitude of the peak was calculated to indicate a mean surface displacement of 1,000,000 m. The magnitude of the Doppler shift is taken as evidence that a core moving at a greater speed than the surface of the sun is responsible for the observed signal. It is further suggested that the core is moving twice as fast as the surface.
Claverie A.
Isaak George R.
McLeod Clive P.
Pallé Pere Lluis
Roca Cortes Teodora
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