On the variability of Lyman-alpha with solar activity

Details On the variability of Lyman-alpha with solar activity On the variability of Lyman-alpha with solar activity

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981p%26ss...29..907b&link_type=abstract

Planetary and Space Science, vol. 29, Aug. 1981, p. 907-914.

Physics

48

Annual Variations, Atmospheric Chemistry, Lyman Alpha Radiation, Solar Activity Effects, Solar Flux Density, Calibrating, D Region

Scientific paper

The following expression is obtained for the relation between the Lyman-alpha irradiance and the solar flux at 10.7 cm: I(Lyman-alpha) equals 2.5 x 10 to the 11th plus 0.011 (F - 65) x 10 to the 11th photons/sq cm-sec (with a correlation coefficient R equals 0.91 and a standard deviation D equals 0.25). The limitations in the absolute calibration of the instruments mean that the values deduced from this expression have an accuracy of plus or minus 25 percent; the irradiance for a perfectly quiet sun is (2.5 plus or minus 0.5) x 10 to the 11th photons/sq cm-sec.

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