On the propagation of acoustic waves in a radiating fluid

Abstract

The linearized Lagrangian radiation equations of Castor (1972) are used in order to obtain a virtually complete and physically satisfying view of acoustic wave dynamics in a radiating fluid. It is assumed that the radiation field is quasi-static, all dynamical radiation terms are ignored, and the Eddington approximation is applied. It is noted that it would be useful to proceed with the complementary study of the time evolution of initial disturbances.