On the generation of the net circular polarization observed in solar faculae

Bibcode
1989A&A...222..311S
Sanchez Almeida, J.; Collados, M.; del Toro Iniesta, J. C.
Bibliographical reference

Astronomy and Astrophysics (ISSN 0004-6361), vol. 222, no. 1-2, Sept. 1989, p. 311-315. Research supported by CAICYT.

Advertised on:
9
1989
Number of authors
3
IAC number of authors
3
Citations
43
Refereed citations
37
Description
The net circular polarization observed in solar faculae (Stenflo et al., 1984) follows a law expected from the combination of velocity and magnetic field gradients in the photosphere. To show this, the theoretical curve of growth (net circular polarization produced by a single line versus its absorption coefficient) predicted by this mechanism is developed. An empirical curve of growth with more than 80 Fe I lines is also constructed. The agreement between theory and observation seems to point toward this mechanism as responsible for circular polarization in faculae at the disk center.
Type
Refereed

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