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Article Contents

# Relativistic transfer equations: Comparison principle and convergence to the non-equilibrium regime

• We consider the relativistic transfer equations for photons interacting via emission absorption and scattering with a moving fluid. We prove a comparison principle and we study the non-equilibrium regime: the relativistic correction terms in the scattering operator lead to a frequency drift term modeling the Doppler effects. We prove that the solution of the relativistic transfer equations converges toward the solution of this drift diffusion equation.
Mathematics Subject Classification: Primary: 35B51, 35Q85, 35B40; Secondary: 35K65.

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