Coronal Index of Solar Activity - Part Seven - Years 1988-1991
Abstract
A brief description is given of the coronal index of solar activity (CI) derived from ground-based observations of the green coronal line 530.3 nm (Fe XIV) and its computation. The final data of CI are presented in graphical form over the period 1988 1991. The maximum of CI coincided with the Wolf number in cycle 22, and no second maximum, sometimes seen two years after the first one, was observed in this cycle.
- Publication:
-
Solar Physics
- Pub Date:
- July 1994
- DOI:
- 10.1007/BF00680452
- Bibcode:
- 1994SoPh..152..487R
- Keywords:
-
- Applications Of Mathematics;
- Correlation;
- Emission Spectra;
- Iron;
- Line Spectra;
- Radio Astronomy;
- Solar Activity;
- Solar Corona;
- Stellar Models;
- Visible Spectrum;
- X Ray Astronomy;
- Astronomical Photometry;
- Coronagraphs;
- Emissivity;
- Fourier Analysis;
- Irradiance;
- Solar Limb;
- Solar Magnetic Field;
- Astronomy