Bibcode
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
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.