Abstract
Evening and morning twilight enhancements of 5577 Å and 5893 Å lines were observed by Dunn-Manring type photometer at Calcutta during the period 1983–1985 and that of 5577 Å have been collected from Allahabad observatory. The following paper presents the correlation between the enhanced intensity of airglow lines (A G ) and solar flare index (I f ) which is calculated considering all the flares which occurred 24 hr before the times of occurrence of enhancements. It is observed that the intensity of airglow lines varies with the flare index in an oscillatory manner upto a certain limiting value ofI f . Afterwards intensity of both lines increases with the increase ofI f . The nature of variation is the same for both sunspot maximum and minimum periods. A possible explanation of such type of variation has also been invoked.
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Bates, D. R.: 1960,Physics of the Upper Atmosphere, Academic Press, London, p. 219.
Barth, C. A.: 1964,Ann. Geophys. (France)20, 182.
Barthier, P.: 1956,Ann. Geo. Phys. 12, 113.
Chapman, S.: 1931,Proc. R. Soc. London (GB)132, 353.
Chamberlain, J. W.: 1961,Physics of the Aurora and Airglow, Academic Press, New York.
Dandekar, B. S. and Silverman, S. M.: 1964,Planet. Space Sci. 12, 867.
Fukuyama, K. J.: 1976,J. Atmos. Terr. Phys. (GB)38, 1279.
Ghosh, S. N. and Midya, S. K.: 1986,Ind. J. Radio and Space Phys. 15, 53.
Ghosh, S. N. and Midya, S. K.: 1987,Ind. J. Radio and Space Phys. 16, 277.
Ghosh, S. N. and Midya, S. K.: 1986,Ind. J. Phys. 69B, 413.
Kazakov, K.: 1976,C. R. Acad. Bulg. Sci. (Bulgaria)29, 991.
Kundu, N. and Ghosh, S. N.: 1981,Ind. J. Phys. 55B, 343.
Midya, S. K. and Midya, D.: 1993,Earth, Moon and Planets (in press).
Roach, F. E.: 1955,Ann. Geophys. 11, 214.
Rosenberg, N. and Zimmerman, S. P.: 1967,Planet. Space Sci. 15, 863.
Sawyer, C. B.: 1967,J. Geophys. Res. 72, 385.
Shrivastava, N., Shrivastava, S., Dixit, S. D., and Shrivastava, A. N.: 1989,Earth, Moon and Planets 44, 181.
Singh, J. and Chatterjee, S. D.: 1973,Ind. J. Phys. 47, 129.
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Midya, S.K., Tarafder, G. & Das, T.K. Evening and morning twilight airglow emissions of 5577 Å and 5893 Å lines at Calcutta and Allahabad and their correlation with flare index. Earth Moon Planet 63, 199–207 (1993). https://doi.org/10.1007/BF00572468
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DOI: https://doi.org/10.1007/BF00572468