Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999coska..29..105a&link_type=abstract
Contributions of the Astronomical Observatory, vol. 29, p. 105
Astronomy and Astrophysics
Astronomy
2
Solar Activity, Solar Corona, Solar Flux Density, Sunspots, Irradiance, Ultraviolet Spectra, Latitude
Scientific paper
We present the Fe XIV 530.3 nm ("green line") coronal index (CI) of solar activity for 1998. A systematic increase of CI was observed from January to October 1998. Toward the end of the year the rate of increase slowed remarkably. A comparison of CI with similar indices of solar activity (2800 MHz radio flux, the Wolf sunspot number and the SUSIM Mg II index) shows a good correlation.
Altrock Richard C.
Minarovjech Milan
Rusin Vojtech
Rybansky Milan
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