Intensity variation of OI 5577 A line of atomic oxygen at Allahabad during morning and evening twilight

Details Intensity variation of OI 5577 A line of atomic oxygen at Allahabad during morning and evening twilight Intensity variation of OI 5577 A line of atomic oxygen at Allahabad during morning and evening twilight

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.166..151s&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 166, no. 1, April 1990, p. 151-157.

Astronomy and Astrophysics

Astrophysics

Atomic Spectra, Oxygen Spectra, Twilight Glow, Annual Variations, Diurnal Variations, Line Spectra

Scientific paper

Intensity variation of OI green line observed at Allahabad (25 deg 32 min N, 81 deg 53 min E) by a laboratory-made photometer has been reported here for the period January 1988 to December 1988. During the summer period of observation, slight enhancement in the intensity of evening and morning twilight emission is observed for a short duration of 4 min. However, winter observations show less pronounced enhancement in the intensity of evening twilight, while it does not occur during morning twilight. These observations are closely in agreement with those of Schaffer (1975).

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