Browsing by Author "Holzreuter, R"

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Linear Polarization of the Solar Ca I 4227 Å Line: Modeling with Radiative Transfer and Last Scattering Approximation

Anusha, L. S; Stenflo, J. O; Frisch, H; Bianda, M; Holzreuter, R; Nagendra, K. N; Sampoorna, M; Ramelli, R (Astronomical Society of the Pacific, 2011-04)

To model the Ca I 4227 Å line polarization, radiative transfer effects with partial frequency redistribution (PRD) must be taken into account. The numerical solution of the relevant polarized radiative transfer (RT) equations ...
Observations of the forward scattering Hanle effect in the Ca I 4227 Å line

Bianda, M; Ramelli, R; Anusha, L. S; Stenflo, J. O; Nagendra, K. N; Holzreuter, R; Sampoorna, M; Frisch, H; Smitha, H. N (EDP Sciences, 2011-06)

Chromospheric magnetic fields are notoriously difficult to measure. The chromospheric lines are broad, while the fields are producing a minuscule Zeeman-effect polarization. A promising diagnostic alternative is provided ...
Observations of the Solar Ca I 4227 Å Line

Bianda, M; Ramelli, R; Stenflo, J. O; Anusha, L. S; Nagendra, K. N; Sampoorna, M; Holzreuter, R; Frisch, H (Astronomical Society of the Pacific, 2011-04)

Our aim is to understand some interesting polarization features observed in the solar Ca I 4277 Å line. Here we only discuss the observational aspects. Observations have also been made in other chromospheric lines within ...

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