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.
Related projects:	Velká infrastruktura CESNET