Cosmological Waveguides for Gravitational Waves
نویسنده
چکیده
We study the linearized equations describing the propagation of gravitational waves through dust. In the leading order of the WKB approximation, dust behaves as a nondispersive, non-dissipative medium. Taking advantage of these features, we explore the possibility that a gravitational wave from a distant source gets trapped by the gravitational field of a long filament of galaxies of the kind seen in the large scale structure of the Universe. Such a waveguiding effect may lead to a huge magnification of the radiation flux from distant sources, thus lowering the sensitivity threshold required for a successful detection of gravitational waves by detectors like VIRGO, LIGO and LISA. PACS: 04.25, 04.30-w, 98.62.Sb
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