An experiment to observe the vertical gradient in line-of-sight velocity oscillations

This paper describes an experiment involving the use of a close pair of spectral lines formed at different heights in the solar atmosphere to record the vertical gradient in line-of-sight velocity oscillations. Presented are the results of first observations in an undisturbed atmosphere and in a sun...

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Bibliographic Details
Published in:Solar physics 2001-12, Vol.204 (1-2), p.3-11
Main Authors: Kobanov, NI, Makarchik, D V
Format: Article
Language:English
Subjects:
Atmosphere
Solar physics
Studies
Online Access:Get full text
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Summary:This paper describes an experiment involving the use of a close pair of spectral lines formed at different heights in the solar atmosphere to record the vertical gradient in line-of-sight velocity oscillations. Presented are the results of first observations in an undisturbed atmosphere and in a sunspot penumbra made on 14 July 2000. Almost complete suppression of the spectrograph noise makes the method presented a useful tool for high-sensitivity measurements of small vertical gradients.
ISSN:0038-0938
1573-093X
DOI:10.1023/A:1014260305988