Bibcode
DOI
Claverie, A.; Isaak, G. R.; McLeod, C. P.; van der Raay, H. B.; Palle, P. L.; Roca-Cortés, T.
Bibliographical reference
Nature, vol. 299, Oct. 21, 1982, p. 704-707. Research supported by the Science and Engineering Research Council.
Advertised on:
10
1982
Journal
Citations
40
Refereed citations
36
Description
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.