A study of the helium D3 line in the flash spectrum of the 1983 eclipse

Details A study of the helium D3 line in the flash spectrum of the 1983 eclipse A study of the helium D3 line in the flash spectrum of the 1983 eclipse

Feb 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997cha%26a..21..347j&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 21, Issue 3, p. 347-351.

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

We carried out photometric measurement of the D3 line in the flash spectrum of the 1983 solar eclipse. After a reliable calibration we derived the distribution with height of its absolute surface brightness and hence that of helium density. The results roughly agree with the previous observational results. Our result fits in with the statistical relation found by Gulaev, that the absolute brightness of the D3 line decreases with increasing sunspot number.

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