Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-11-27T04:58:21.106Z Has data issue: false hasContentIssue false
  • English
  • Français

Calcium K-Line Profiles as a Function of Latitude and Solar Cycle Phase

Published online by Cambridge University Press:  12 April 2016

Jagdev Singh
Jagdev Singh*
Affiliation:
Indian Institute of AstrophysicsBangalore 560034India

Astract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

High resolution spectra are being taken in ionized calcium K-line at different latitudes and integrated over the visible 180 degree longitude. These have been analysed to study the variability of the line parameters as a function of latitude. These spectra are being obtained on a regular basis and large data base will be used to study chromospheric rotation, differential rotation in chromosphere, activity and variability of K-line parameters as function of latitude and solar cycle phase. Further, an optical arrangement has been worked out to obtain the spectra along the latitudes of the solar image in the light integrated over longitudes. This involves the unidirectionally focusing of the image in N-S direction.

Type
Session 6. Flares and Transients
Information
International Astronomical Union Colloquium , Volume 141: The Magnetic and Velocity Fields of Solar Active Regions , 1993 , pp. 408 - 409
Copyright
Copyright © Astronomical Society of the Pacific 1993

References

Singh, J. and Prabhu, T.P. 1985, Solar Phys. 97, 203.Google Scholar
Singh, J. and Livingston, W.C. 1987, Solar Phys. 109, 387.CrossRefGoogle Scholar
Skumanich, A., Lean, J.L. White, O.R. and Livingston, W.C. 1984, ApJ. 282, 776.Google Scholar
White, O.R. and Livingston, W.C. 1978, Ap.J. 226, 679.Google Scholar
White, O.R. and Suemoto, Z. 1968, Solar Phys. 3, 523.Google Scholar