scholarly journals Modeling the scattering polarization of the solar Ca i 4227 A line with angle-dependent partial frequency redistribution

2021 ◽  
Author(s):  
G. Janett ◽  
E. A. Ballester ◽  
N. Guerreiro ◽  
S. Riva ◽  
L. Belluzzi ◽  
...  
Keyword(s):  
Partial Frequency ◽  
Frequency Redistribution ◽  
Partial Frequency Redistribution

Effects of Ambipolar Diffusion on Prominence Thread Models

1994 ◽  
Vol 144 ◽  
pp. 315-321 ◽  
Author(s):  
M. G. Rovira ◽  
J. M. Fontenla ◽  
J.-C. Vial ◽  
P. Gouttebroze
Keyword(s):  
Energy Balance ◽  
Transition Region ◽  
Ambipolar Diffusion ◽  
Line Profiles ◽  
Balance Equations ◽  
Model Calculations ◽  
Partial Frequency ◽  
Frequency Redistribution ◽  
Partial Frequency Redistribution ◽  
Theoretical Structure

AbstractWe have improved previous model calculations of the prominence-corona transition region including the effect of the ambipolar diffusion in the statistical equilibrium and energy balance equations. We show its influence on the different parameters that characterize the resulting prominence theoretical structure. We take into account the effect of the partial frequency redistribution (PRD) in the line profiles and total intensities calculations.

Frequency Redistribution Effects in the Formation of Lyman α in Prominences and Their Influence on the Ratio of Hα to Lα

1979 ◽  
Vol 44 ◽  
pp. 53-55
Author(s):  
R.W. Milkey ◽  
J.N. Heasley ◽  
E.J. Schmahl ◽  
O. Engvold
Keyword(s):  
Line Profile ◽  
Large Fraction ◽  
Partial Frequency ◽  
Frequency Redistribution ◽  
Partial Frequency Redistribution ◽  
Emergent Intensity

The effect of partial frequency redistribution in the formation of Lyman α in the chromosphere has been discussed by Milkey and Mihalas (1973) and others, and it has been shown that in this case the coherency of scattering in the wings of the line substantially influences the line profile. Although there are non-negligible sources for La photons within a prominence, a large fraction of the emergent line photons are due to scattering of photons incident on the surface of the prominence so that one expects that in a prominence the frequency redistribution processes will play an important role in determining the emergent intensity.

scholarly journals Photonic superdiffusive motion in resonance line radiation trapping Partial frequency redistribution effects

2007 ◽  
Vol 126 (15) ◽  
pp. 154505 ◽  
Author(s):  
A. R. Alves-Pereira ◽  
E. J. Nunes-Pereira ◽  
J. M. G. Martinho ◽  
M. N. Berberan-Santos
Keyword(s):  
Resonance Line ◽  
Line Radiation ◽  
Partial Frequency ◽  
Frequency Redistribution ◽  
Radiation Trapping ◽  
Partial Frequency Redistribution
Sign in / Sign up

Export Citation Format

Share Document