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arxiv: astro-ph/9803131 · v1 · submitted 1998-03-11 · 🌌 astro-ph

Accurate Determination of the Solar Photospheric Radius

T. M. Brown (High Altitude Observatory , National Center for Atmospheric Research , Boulder , CO) J. Christensen-Dalsgaard (Teoretisk Astrofysik Center , Danmarks Grundforskningsfond , Institut for Fysik og Astronomi , Aarhus Universitet , Denmark) This is my paper
classification 🌌 astro-ph
keywords solarradiusaccurateannualaveragescombinedcycledeclining
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The Solar Diameter Monitor measured the duration of solar meridian transits during the 6 years 1981 to 1987, spanning the declining half of solar cycle 21. We have combined these photoelectric measurements with models of the solar limb-darkening function, deriving a mean value for the solar near-equatorial radius of 695.508 +- .026 Mm. Annual averages of the radius are identical within the measurement error of +- .037 Mm.

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