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

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

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..405..275s&link_type=abstract

Solar Polarization 5: In Honor of Jan Stenflo ASP Conference Series, Vol. 405, proceedings of the conference held 17-21 Septembe

Astronomy and Astrophysics

Astronomy

2

Scientific paper

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.

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