  This paper presents a combined field and boundary integral equation method
for solving the time-dependent scattering problem of a thermoelastic body
immersed in a compressible, inviscid and homogeneous fluid. The approach here
is a generalization of the coupling procedure employed by the authors for the
treatment of the time-dependent fluid-structure interaction problem. Using an
integral representation of the solution in the infinite exterior domain
occupied by the fluid, the problem is reduced to one defined only over the
finite region occupied by the solid, with nonlocal boundary conditions. The
nonlocal boundary problem is analyzed with Lubich's approach for time-dependent
boundary integral equations. Existence and uniqueness results are established
in terms of time-domain data with the aid of Laplace-domain techniques.
Galerkin semi-discretization approximations are derived and error estimates are
obtained. A full discretization based on the Convolution Quadrature method is
also outlined. Some numerical experiments in 2D are also included in order to
demonstrate the accuracy and efficiency of the procedure.
