This paper deals with the propagation of waves around a circular obstacle. The medium is heterogeneous: the velocity is smaller in the inner region and greater in the outer region. The interface separating the two regions is also circular, and the obstacle is located eccentrically inside it. The different front portraits are classified.
@article{bwmeta1.element.bwnjournal-article-bcpv50z1p305bwm,
author = {Volford, Andr\'as and Simon, Peter and Farkas, Henrik},
title = {Waves of excitations in heterogeneous annular region, asymmetric arrangement},
journal = {Banach Center Publications},
volume = {50},
year = {1999},
pages = {305-320},
zbl = {1115.58301},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-bcpv50z1p305bwm}
}
Volford, András; Simon, Peter; Farkas, Henrik. Waves of excitations in heterogeneous annular region, asymmetric arrangement. Banach Center Publications, Tome 50 (1999) pp. 305-320. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-bcpv50z1p305bwm/
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