Počet záznamů: 1
Three-dimensional simulations of scattering polarization and the Hanle effect in MHD chromospheric models
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SYSNO ASEP 0455751 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Three-dimensional simulations of scattering polarization and the Hanle effect in MHD chromospheric models Tvůrce(i) Štěpán, Jiří (ASU-R) RID, ORCID Zdroj.dok. Polarimetry: From the Sun to Stars and Stellar Environments. - Cambridge : Cambridge University Press, 2015 / Nagendra K.N. - ISBN 9781107078550 Rozsah stran s. 360-367 Poč.str. 8 s. Forma vydání Tištěná - P Akce Symposium of the International Astronomical Union /305./ Datum konání 30.11.2014 - 05.12.2014 Místo konání Punta Leona Země CR - Kostarika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova polarization ; radiati ve transfer ; scattering Vědní obor RIV BN - Astronomie a nebeská mechanika, astrofyzika Obor OECD Astronomy (including astrophysics,space science) CEP GPP209/12/P741 GA ČR - Grantová agentura ČR Institucionální podpora ASU-R - RVO:67985815 UT WOS 000456243000056 EID SCOPUS 84937945411 DOI 10.1017/S1743921315005050 Anotace Scattering line polarization and the Hanle effect are among the most important mechanisms for diagnostics of the solar and stellar atmospheres. The fact that real stellar atmospheres are horizontally inhomogeneous makes the spectral synthesis and interpretation very challenging because the effect of thermodynamic fluctuations on spectral line polarization is entangled with the action of magnetic fields. This applies to the spatially resolved as well as to the averaged spectra. The necessary step towards the interpretation of such spectra is to study the line formation in sufficiently realistic 3D MHD models and compare the synthetic spectra with observations. This paper gives an overview of recent progress in the field of 3D NLTE synthesis of polarized spectral lines resulting from investigations with the radiative transfer code PORTA. Pracoviště Astronomický ústav Kontakt Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Rok sběru 2016
Počet záznamů: 1