Formation of polarized spectral lines in atmospheres with horizontal inhomogeneities

0455455 - ASÚ 2016 RIV GB eng C - Konferenční příspěvek (zahraniční konf.)
Tichý, Adam - Štěpán, Jiří - Trujillo Bueno, J. - Kubát, Jiří
Formation of polarized spectral lines in atmospheres with horizontal inhomogeneities.
Polarimetry: From the Sun to Stars and Stellar Environments. Cambridge: Cambridge University Press, 2015 - (Nagendra, K.), s. 401-406. Proceedings of the International Astronomical Union, S305. ISBN 9781107078550.
[Symposium of the International Astronomical Union /305./. Punta Leona (CR), 30.11.2014-05.12.2014]
Grant CEP: GA ČR(CZ) GA14-02385S; GA ČR GPP209/12/P741
Institucionální podpora: RVO:67985815
Klíčová slova: polarization * radiati ve transfer * scattering
Obor OECD: Astronomy (including astrophysics,space science)

We study the problem of the generation and tr/nansfer of spectral line intensity and po-/nlarization in models of stellar atmospheres with horizontal plasma inhomogeneities. We solve the/nnon-LTE radiative transfer problem in full 3D geometry taking into account resonant scattering/npolarization and its modification by magnetic fields via the Hanle effect. We show that horizon-/ntal fluctuations of the thermodynamical conditions of stellar atmospheres can have a significant/nimpact on the linear polarization of the emergent spectral line radiation and its center-to-limb variation.
Trvalý link: http://hdl.handle.net/11104/0256059