Browsing by Author "Gupta, S. S"

Now showing items 22-24 of 24

Solar variability in the CaII K during solar cycles 21 and 22

Sivaraman, K. R; Gupta, S. S; Kariyappa, R; Aleem, P. S. M; Sundararaman, K (Astronomical Society of India, 1993)

We have monitored the sun in the light of the CaII K line and obtained the disc integrated profiles for the years 1974-91. From these profiles we have estimated the variability of the sun as a star as seen in the various ...
Sunspot motions from a study of Kodaikanal and Mount Wilson observations

Howard, R. F; Sivaraman, K. R; Gupta, S. S; Gilman, P. I (International Astronomical Union, 1990)

Results are presented of a study of the daily motions of individual sunspots and of sunspot groups on the basis of Kodaikanal and Mount Wilson white-light observations. A comparison of the two data sets show a good agreement ...
What is a quiet sun CaII K line profile?

Sivaraman, K. R; Gupta, S. S; Kariyappa, R (Astronomical Society of India, 1993)

We have derived a mean disc averaged K line profile from observations at the Kodaikanal Solar Tower Telescope on days when sun was relatively very quiet during the years 1985-86. This mean profile would represent the K-line ...

Search DSpace