Spectrograph distortion in sunspot line profiles

Bibcode
1991SoPh..134..403M
DOI
10.1007/BF00152656
Martinez Pillet, V.; Sanchez Almeida, J.
Bibliographical reference

Solar Physics (ISSN 0038-0938), vol. 134, Aug. 1991, p. 403-406. Research supported by CSIC and CICYT.

Advertised on:
8
1991
Number of authors
2
IAC number of authors
2
Citations
3
Refereed citations
3
Description
The way in which the effect of the instrumental polarization of a spectrograph can distort the shape of the intensity profiles in sunspots is shown empirically. A spectral region around a magnetically sensitive line and a sunspot away from the disk center were chosen. The resulting limitations which arise when trying to derive physically meaningful results from distorted data are discussed. It was found that spectra of magnetic-sensitive lines in sunspots may be contaminated by the instrumental polarization of the spectrograph.
Type
Refereed
Sunspots

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