Formation of polarized spectral lines in atmospheres with horizontal inhomogeneities

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Authors

TICHÝ Adam ŠTĚPÁN Jiří TRUJILLO BUENO Javier KUBÁT Jiří

Year of publication 2015
Type Article in Proceedings
Conference Proceedings of the International Astronomical Union, Volume 305
MU Faculty or unit

Faculty of Science

Citation
Web http://dx.doi.org/10.1017/S1743921315005128
Doi http://dx.doi.org/10.1017/S1743921315005128
Field Astronomy and astrophysics
Keywords Polarization; radiative transfer; scattering
Description We study the problem of the generation and transfer of spectral line intensity and polarization in models of stellar atmospheres with horizontal plasma inhomogeneities. We solve the non-LTE radiative transfer problem in full 3D geometry taking into account resonant scattering polarization and its modification by magnetic fields via the Hanle effect. We show that horizontal fluctuations of the thermodynamical conditions of stellar atmospheres can have a significant impact on the linear polarization of the emergent spectral line radiation and its center-to-limb variation.
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