Measurement of Solar Diameter
Abstract
We have used the photographic images of the Kodaikanal observatory archives to measure the solar diameter. These images obtained with a 6-inch refractor form part of an ongoing programme of synoptic observations that commenced in 1914. The reduced diameter measures (annual means) completed for 4 half solar cycles show that the solar radius is anti correlated with the sunspot activity.
- Publication:
-
2nd UN/NASA Workshop on International Heliophysical Year and Basic Space Science
- Pub Date:
- November 2006
- Bibcode:
- 2006ihy..workE..25S