Solar Diameter Observations around the maximum of Cycle 23
Abstract
The Réseau de Suivi au Sol du Rayon Solaire numbers four stations, in France, Brasil, Turkey and Algeria. Though formally established in 2002, the common works of those groups were started as early as ten years before, particularly involving the CERGA and the ON. The method and instruments used by this network are introduced. Results of solar semi-diameter variation campaigns are presented for the year s corresponding to the peak of the solar activity cycle 23. The outcome shows that the average value for a session of measurements is obtained with accuracy better than few tenths of arc second, what enables to establish a positive correlation with the sunspots count to a level of certainty better than 0.99.
- Publication:
-
Astronomy in Latin America
- Pub Date:
- November 2003
- Bibcode:
- 2003ala..conf..171P