Three-dimensional Radiative Transfer Modeling of the Second Solar Spectrum of Titanium

Bibcode
2009ASPC..405..275S
Shchukina, N. G.; Trujilo-Bueno, J.
Bibliographical reference

Solar Polarization 5: In Honor of Jan Stenflo ASP Conference Series, Vol. 405, proceedings of the conference held 17-21 September, 2007 at Centro Stefano Franscini--Monte Veritá, Ascona, Switzerland. Edited by Svetlana V. Berdyugina, K. N. Nagendra, and Renzo Ramelli. San Francisco: Astronomical Society of the Pacific, 2009., p.275

Advertised on:
6
2009
Number of authors
2
IAC number of authors
0
Citations
6
Refereed citations
5
Description
Here we present multilevel radiative transfer calculations of the scattering polarization of neutral titanium lines in a three-dimensional model of the solar photosphere, which we have obtained from realistic hydrodynamical simulations of solar surface convection. We consider the particularly interesting case of the Ti I multiplet a{^5}F - y{^5}Fo, which is well suited for investigating the Sun's hidden magnetism via the differential Hanle effect. After considering the unmagnetized reference case, we show that the depolarization produced by a volume-filling microturbulent field with a strength such that it produces saturation of the upper-level Hanle effect leads to a much better fit to Gandorfer's (2002) observations.
Type
Non-refereed

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