Physics
Scientific paper
Oct 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999injpb..73..739m&link_type=abstract
Indian J. Phys., Part B, Vol. 73B, No. 5, p. 739 - 743
Physics
Solar-Terrestrial Relations: Airglow, Solar-Terrestrial Relations: Solar Flares
Scientific paper
Twilight and night airglow observation of 5577 Å line was observed by Dunn-Manring type photometer for the period 1983 - 1987. This paper presents the seasonal variation of 5577 Å line intensity (Aσ) and its variation with solar flare index (If) which is calculated considering all the flares which occurred during a particular month for which airglow intensity is considered. It is concluded that the variation of the intensity of airglow line (5577 Å) with solar flare index (If) shows a periodic trend. Average period of 5577 Å line intensity with monthly mean of flare index are compared for lower and higher values of solar flare index (If). A possible explanation of such type of variation is invoked by considering the formation and destruction of O3 by ultraviolet rays during flare time.
Ghosh S. N.
Midya S. K.
Sen Asok Kumar
Tarafdar G.
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