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RESEARCH PRODUCT
Cosmological waveguides for gravitational waves
G. MarmoSalvatore CapozzielloVladimir I. Man’koGiuseppe Bimontesubject
High Energy Physics - TheoryPhysicsNuclear and High Energy PhysicsGravitational-wave observatoryGravitational waveSpeed of gravityFOS: Physical sciencesGeneral Relativity and Quantum Cosmology (gr-qc)Astrophysics::Cosmology and Extragalactic AstrophysicsAstrophysicsGravitational accelerationGeneral Relativity and Quantum CosmologyLIGOGravitational energyGeneral Relativity and Quantum CosmologyHigh Energy Physics - Theory (hep-th)Gravitational fieldGravitational redshiftdescription
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 non-dispersive, 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 from distant sources, thus lowering the sensitivity required for a successful detection of gravitational waves by detectors like VIRGO, LIGO and LISA.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-12-01 | Physical Review D |