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Accepted version

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2016-08-26

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cc-by-nc-nd (c) Elsevier B.V., 2016
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/148636

Wave diffraction by a cosmic string

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https://doi.org/10.1016/j.physleta.2016.07.008

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.

Subject

Ones gravitacionals, Espais vectorials topològics

Subject (English)

Gravitational waves, Linear topological spaces

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Articles publicats en revistes (Física Quàntica i Astrofísica)
Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

Citation

FERNÁNDEZ NÚÑEZ, Isabel and BULASHENKO, Oleg. Wave diffraction by a cosmic string. Physics Letters A. 2016. Vol. 380, num. 37, pags. 2897-2901. ISSN 0375-9601. [consulted: 18 of August of 2026]. Available at: https://hdl.handle.net/2445/148636

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