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Title: Wave diffraction by a cosmic string
Author: Fernández Núñez, Isabel
Bulashenko, Oleg
Keywords: Ones gravitacionals
Espais vectorials topològics
Gravitational waves
Linear topological spaces
Issue Date: 26-Aug-2016
Publisher: Elsevier B.V.
Abstract: We show that if a cosmic string exists, it may be identified through characteristic diffraction pattern in the energy spectrum of the observed signal. In particular, if the string is on the line of sight, the wave field is shown to fit the Cornu spiral. We suggest a simple procedure, based on Keller's geometrical theory of diffraction, which allows to explain wave effects in conical spacetime of a cosmic string in terms of interference of four characteristic rays. Our results are supposed to be valid for scalar massless waves, including gravitational waves, electromagnetic waves, or even sound in case of condensed matter systems with analogous topological defects.
Note: Versió postprint del document publicat a:
It is part of: Physics Letters A, 2016, vol. 380, num. 37, p. 2897-2901
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ISSN: 0375-9601
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)
Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

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