scholarly journals On the Strength of the CIV 155 nm Resonance Lines in Planetary Nebulae

1983 ◽  
Vol 103 ◽  
pp. 518-518 ◽  
Author(s):  
J. Köppen ◽  
R. Wehrse
Keyword(s):  
Radiative Transfer ◽  
Resonance Line ◽  
Spectroscopic Data ◽  
Planetary Nebulae ◽  
Partial Frequency ◽  
Frequency Redistribution ◽  
Partial Frequency Redistribution ◽  
Upper Level ◽  
Dust Absorption

Ionization models for NGC 6210, 7009, 3242 and II 2003 have been constructed from optical and IUE spectroscopic data. The CIV 155 nm resonance line is predicted about ten times stronger than observed. Radiative transfer calculations of the CIV lines in a spherical nebula, assuming partial frequency redistribution, were made to investigate the effects of dust absorption and an additional depopulation of the upper level.

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

scholarly journals 2-D Radiative Transfer Simulations with Angle-Dependent Partial Frequency Redistribution

1998 ◽  
Vol 167 ◽  
pp. 209-212
Author(s):  
A.B. Gorshkov ◽  
P. Heinzel
Keyword(s):  
Radiative Transfer ◽  
Numerical Simulations ◽  
Line Profiles ◽  
Partial Frequency ◽  
Frequency Redistribution ◽  
Partial Frequency Redistribution ◽  
Solar Prominences ◽  
Transfer Modelling ◽  
Redistribution Function

AbstractWe demonstrate how the angle-dependent redistribution function can be incorporated into the 2-D transfer modelling of solar prominences. Some preliminary numerical simulations have been performed and we present their results by comparing the emergent hydrogen Lα line profiles computed with the angle-averaged and angle-dependent redistributions.

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