WAVE FRONTS AND THE RADIATION PRINCIPLE

Author:

EIDUS D.1

Affiliation:

1. Department of Pure Mathematics, School of Mathematical Sciences, Sackler Faculty of Exact Sciences, Tel Aviv University, Ramat-Aviv, Tel Aviv 69978, Israel

Abstract

We are concerned with the construction of Sommerfeld-type radiation conditions for stationary acoustic oscillations in inhomogeneous media with densities independent of r. It is shown that such radiation conditions exist iff there exists a one-parameter family of closed homothetic star-shaped (with respect to origin) wave fronts. These radiation conditions select the same solutions of the reduced wave equation as the limiting absorption principle.

Publisher

World Scientific Pub Co Pte Lt

Subject

Mathematical Physics,Statistical and Nonlinear Physics

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