Thermo-chemical nonequilibrium analysis of viscous shock layers

1995 ◽  
Author(s):  
Roop Gupta ◽  
K Lee
Keyword(s):  
Chemical Nonequilibrium ◽  
Shock Layers

INVESTIGATION OF CHEMICAL NONEQUILIBRIUM EFFECTS IN VISCOUS SHOCK LAYERS

1963 ◽  
Author(s):  
P. Roy Choudhury ◽  
Michael Merrigan ◽  
David Stadelman
Keyword(s):  
Chemical Nonequilibrium ◽  
Nonequilibrium Effects ◽  
Shock Layers

scholarly journals FUGACITY AND REHEATING OF PRIMORDIAL NEUTRINOS

2013 ◽  
Vol 28 (40) ◽  
pp. 1350188 ◽  
Author(s):  
JEREMIAH BIRRELL ◽  
CHENG-TAO YANG ◽  
PISIN CHEN ◽  
JOHANN RAFELSKI
Keyword(s):  
Cosmological Model ◽  
Background Radiation ◽  
Chemical Nonequilibrium ◽  
Model Parameter ◽  
Standard Cosmological Model ◽  
Cmb Fluctuations ◽  
The Impact ◽  
Freeze Out

We clarify in a quantitative way the impact that distinct chemical Tc and kinetic Tk freeze-out temperatures have on the reduction of the neutrino fugacity ϒν below equilibrium, i.e. ϒν<1, and the increase of the neutrino temperature Tν via partial reheating. We establish the connection between ϒν and Tk via the modified reheating relation Tν(ϒν)/Tγ, where Tγ is the temperature of the background radiation. Our results demonstrate that one must introduce the chemical nonequilibrium parameter, i.e. the fugacity, ϒν, as an additional standard cosmological model parameter in the evaluation of CMB fluctuations as its value allows measurement of Tk.

scholarly journals Spectral Stability of Ideal-Gas Shock Layers

2008 ◽  
Vol 194 (3) ◽  
pp. 1029-1079 ◽  
Author(s):  
Jeffrey Humpherys ◽  
Gregory Lyng ◽  
Kevin Zumbrun
Keyword(s):  
Ideal Gas ◽  
Spectral Stability ◽  
Shock Layers
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