Delay of emission from extragalactic gamma-ray burst sources as a test for selecting a model of the universe |
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Authors: | E G Vertogradova Yu S Grishkan V B Petkov |
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Institution: | (1) Institute for Nuclear Research, Russian Academy of Sciences, pr. Shestidesyatiletiya Oktyabrya 7a, Moscow, 117312, Russia |
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Abstract: | We obtained an order-of-magnitude estimate for the dispersion of light caused by the effect of quantum fluctuations on the propagation of electromagnetic waves in four-dimensional spacetime. We calculated the delay of the photons from cosmological gamma-ray bursts (GRBs) for the flat, open, and closed cosmological models. This delay is attributable to the effect of expansion of the Universe on the propagation of a dispersive light wave in space. Analysis shows that the delay of GRB photons contains a regular component related to the expansion of the Universe. We conclude that cosmological models of the Universe can be selected by the delay of emission of various energies from GRBs; the accuracy of measuring the parameter Δt/ΔE γ must be no lower than 10?6 s MeV?1. |
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Keywords: | cosmology gamma-ray bursts |
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