On the Constancy of the Solar Diameter

Details On the Constancy of the Solar Diameter On the Constancy of the Solar Diameter

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000apj...543.1007e&link_type=abstract

The Astrophysical Journal, Volume 543, Issue 2, pp. 1007-1010.

Astronomy and Astrophysics

Astronomy

42

Sun: Solar-Terrestrial Relations, Sun: Fundamental Parameters, Sun: Oscillations

Scientific paper

Why does the solar luminosity vary and could it change on human timescales by enough to affect terrestrial climate? As important as these questions are, we lack answers because we do not understand the physical mechanisms responsible for the solar irradiance cycle. Progress here depends on discovering how changes in the solar interior affect energy flow from the radiative and convection zones out through the photosphere. Measurements of small changes in the solar radius are a critical probe of the Sun's interior stratification; they can tell us how and where the solar luminosity is gated or stored. Here we report results from a sensitive 3 yr satellite experiment designed to detect solar diameter fluctuations.

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