Abstract
The paper is devoted to geometrical optics of short linear waves in an inhomogeneous anisotropic medium. We find some typical singularities of caustics that arise due to the so-called interior scattering of waves, the mathematical theory of which was developed by V.I. Arnold in 1988.
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V. I. Arnold, Singularities of Caustics and Wave Fronts (Phasis, Moscow, 1996); partial Engl. transl.: V. I. Arnold, Singularities of Caustics and Wave Fronts (Kluwer, Dordrecht, 1990).
L. D. Landau and E. M. Lifshitz, Theoretical Physics, Vol. 8: Electrodynamics of Continuous Media (Nauka, Moscow, 1992); Engl. transl. of the 1st ed.: L. D. Landau and E. M. Lifshitz, Electrodynamics of Continuous Media (Pergamon, Oxford, 1960).
I. A. Bogaevskii, “Singularities of the Propagation of Short Waves on the Plane,” Mat. Sb. 186(11), 35–52 (1995) [Sb. Math. 186, 1581–1597 (1995)].
I. A. Bogaevsky, “New Singularities and Perestroikas of Fronts of Linear Waves,” Moscow Math. J. 3(3), 807–821 (2003).
V. I. Arnold, “On the Interior Scattering of Waves, Defined by Hyperbolic Variational Principles,” J. Geom. Phys. 5(3), 305–315 (1988).
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Original Russian Text © I.A. Bogaevsky, 2009, published in Trudy Matematicheskogo Instituta imeni V.A. Steklova, 2009, Vol. 267, pp. 7–13.
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Bogaevsky, I.A. Caustics of interior scattering. Proc. Steklov Inst. Math. 267, 1–7 (2009). https://doi.org/10.1134/S0081543809040014
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DOI: https://doi.org/10.1134/S0081543809040014