| |
 |
| Paper: |
Electron Scattering Redistribution Effect on Atomic
Line Polarization |
| Volume: |
489, Solar Polarization 7 |
| Page: |
117 |
| Authors: |
Supriya, H. D.; Nagendra, K. N.; Ravindra, B.; Sampoorna, M. |
| Abstract: |
The scattering of line photons on free electrons modifies the polarization of the atomic spectral
lines. Hence it is important to treat scattering by electrons as a redistribution process and to
study in detail its effect on line formation. The numerically difficult problem of evaluation and
the use of angle-dependent atomic and electron scattering redistribution functions
in the line transfer equation is considered.
Two numerical methods, namely approximate lambda iteration
and scattering expansion method, are used to solve the relevant polarized
transfer problem. A study
of the polarized line formation in a standard two-level atom picture including an exact treatment
of electron scattering redistribution shows the importance of the latter in the analysis
of polarized line profiles emitted by solar and stellar atmospheres.
The effect of electron scattering turns out to be extremely important in the interpretation of very
far wing line polarization of solar and stellar spectral lines. |
|
|
|
|
|
