Coronal Index of Solar Activity 1987
Abstract
Daily values of the coronal index (CI) for the year 1987 are presented. Minimal CI values were observed in February 1987. After March 1987, when almost no CI variations were observed, the CI increased relatively rapidly in April 1987 and continued to increase till November 1987 when it became quiet.
- Publication:
-
Bulletin of the Astronomical Institutes of Czechoslovakia
- Pub Date:
- March 1990
- Bibcode:
- 1990BAICz..41...79R
- Keywords:
-
- Solar Activity Effects;
- Solar Corona;
- Solar Cycles;
- Photosphere;
- Solar Radio Emission;
- Solar Rotation;
- Solar Physics