Solar core rotation

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:
Number of authors
IAC number of authors
Refereed citations
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.