Radiation hydrodynamics in a moving plasma with Compton scattering: Revisited.

Radiation hydrodynamical equations with Compton scattering are presented in a convenient way; equations are available in the subrelativistic regime of |$k_{\rm B}T/(m_{\rm e}c^2) \lesssim 0.1$|⁠ , |$h\nu /(m_{\rm e}c^2) \lesssim 0.1$| (or |$k_{\rm B}T_{\rm rad}/(m_{\rm e}c^2) \lesssim 0.1$|⁠), and |$v/c \lesssim 0.1$|⁠ , where T is the electron temperature, ν the photon frequency, T rad the photon temperature, and v the fluid bulk velocity. Several basic concepts and radiation hydrodynamical phenomena under Compton scattering are briefly discussed; e.g. electron-scattering opacity and the Eddington luminosity, optical depth and a static atmosphere, the photon trapping radius, the magic terminal speed, the pseudo-photosphere of radiative winds, the explicit form of basic equations for steady flows, radiation acoustic wave, and so on. [ABSTRACT FROM AUTHOR]