Solar variability observed through changes in solar figure and mean diameter

Details Solar variability observed through changes in solar figure and mean diameter Solar variability observed through changes in solar figure and mean diameter

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990uat..reptr....h&link_type=abstract

Progress Report, 1 Jun. 1989 - 31 May 1990 Arizona Univ., Tucson. Dept. of Physics.

Physics

Astrometry, Solar Activity, Solar Constant, Solar Diameter, Solar Gravitation, Solar Neutrinos, Climate, Solar Interior, Stellar Luminosity, Sun

Scientific paper

The work performed on solar variability during 1989 at (Santa Clara Lab for Experimental Relativity by Astrometry) SCLERA is reviewed. That portion of the SCLERA research program supported by the Department of Energy has been directed toward the detection and monitoring of climatically significant solar variability by accurate measurement of the variability in solar shape and diameter. Observations were obtained in 1989 and results from analysis of earlier observations obtained. Systematic long term changes in the apparent solar diameter and/or radius were detected and these changes were found to strongly correlate with long term changes in solar total irradiance. Additional evidence for gravity mode coupling was found which may be important to understanding neutrino and fusion energy production rates in the solar core. Each of these findings may be important to anticipating future changes in the solar luminosity. Progress was made in setting up an international network based on SCLERA type instruments to improve the coverage and quality of the observations. A proposal is made for the continuation of support from the DOE for further studies relevant to solar variability forecasting.

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