Radiative Transfer in Solar Prominences

2014 ◽  
pp. 103-130 ◽  
Author(s):  
Petr Heinzel
Keyword(s):  
Radiative Transfer ◽  
Solar Prominences

scholarly journals Computed vs. Observed Line Profiles of Metallic Atoms in Prominences

2001 ◽  
Vol 203 ◽  
pp. 384-386
Author(s):  
D. Cirigliano ◽  
M. Rovira ◽  
P. Mauas ◽  
G. Stenborg
Keyword(s):  
Hydrogen Atom ◽  
Radiative Transfer ◽  
Statistical Equilibrium ◽  
Line Profiles ◽  
Equilibrium Equations ◽  
Plasma Parameters ◽  
Solar Prominences ◽  
Physical Plasma

By solving simultaneously the radiative transfer and statistical equilibrium equations we compute lines profiles for the Ca II H and K lines, Mg II h and k lines and He I at 584,3 Å for several prominence models given by the hydrogen atom. The computed profiles are compared with the observations in order to constrain the physical plasma parameters of solar prominences.

Radiative transfer in fine structures of solar prominences

2007 ◽  
Vol 103 (2) ◽  
pp. 351-361 ◽  
Author(s):  
A. Ajabshirizadeh ◽  
A.G. Nikoghossian ◽  
H. Ebadi
Keyword(s):  
Radiative Transfer ◽  
Solar Prominences ◽  
Fine Structures

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.

scholarly journals Modelling of Mg II lines in solar prominences

2019 ◽  
Vol 625 ◽  
pp. A30 ◽  
Author(s):  
P. J. Levens ◽  
N. Labrosse
Keyword(s):  
Radiative Transfer ◽  
Emission Measure ◽  
Line Profiles ◽  
Plasma Parameters ◽  
One Dimensional ◽  
Line Shapes ◽  
Physical Conditions ◽  
Solar Prominences ◽  
Wide Range ◽  
Hydrogen Lines

Context. Observations of the Mg II h and k lines in solar prominences with IRIS reveal a wide range of line shapes from simple non-reversed profiles to typical double-peaked reversed profiles, and with many other possible complex line shapes. The physical conditions responsible for this variety are not well understood. Aims. Our aim is to understand how physical conditions inside a prominence slab influence shapes and properties of emergent Mg II line profiles. Methods. We compute the spectrum of Mg II lines using a one-dimensional non-LTE radiative transfer code for two large grids of model atmospheres (isothermal isobaric, and with a transition region). Results. The influence of the plasma parameters on the emergent spectrum is discussed in detail. Our results agree with previous studies. We present several dependencies between observables and prominence parameters which will help with the interpretation of observations. A comparison with known limits of observed line parameters suggests that most observed prominences emitting in Mg II h and k lines are cold, low-pressure, and optically thick structures. Our results indicate that there are good correlations between the Mg II k line intensities and the intensities of hydrogen lines, and the emission measure. Conclusions. One-dimensional non-LTE radiative transfer codes allow us to understand the main characteristics of the Mg II h and k line profiles in solar prominences, but more advanced codes will be necessary for detailed comparisons.

The Atmospheres of AGB Stars: Opacities, Radiative Transfer and Models

2008 ◽  
Vol 28 ◽  
pp. 67-74 ◽  
Author(s):  
B. Aringer ◽  
W. Nowotny ◽  
S. Höfner
Keyword(s):  
Radiative Transfer ◽  
Agb Stars

Radiative Transfer Simulations of AGN Dust Tori

2008 ◽  
Vol 28 ◽  
pp. 121-128
Author(s):  
T. Beckert ◽  
S.F. Hönig
Keyword(s):  
Radiative Transfer
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