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Lorentz Invariance Violation induced time delays in GRBs in different cosmological models

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arxiv 1008.2615 v1 pith:VDUKGMBT submitted 2010-08-16 astro-ph.CO

classification astro-ph.CO
keywords energymodelstimecosmologicalcosmologydelaysdependentdifferent
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abstract

Lorentz Invariance Violation (LIV) manifesting itself by energy dependent modification of standard relativistic dispersion relation has recently attracted a considerable attention. Ellis et al. previously investigated the energy dependent time offsets in different energy bands on a sample of gamma ray bursts and, assuming standard cosmological model, they found a weak indication for redshift dependence of time delays suggestive of LIV. Going beyond the $\Lambda$CDM cosmology we extend this analysis considering also four alternative models of dark energy (quintessence with constant and variable equation of state, Chaplygin gas and brane-world cosmology). It turns out that the effect noticed by Ellis et al. is also present in those models and is the strongest for quintessence with variable equation of state.

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Cited by 2 Pith papers

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  1. Monte Carlo simulation of GRB data to test Lorentz-invariance violation

    hep-ph 2025-04 conditional novelty 5.0 of 10

    A combined model with both Lorentz-violation and energy-dependent intrinsic delays recovers simulated parameters across all mock datasets and fits multi-GeV and TeV GRB photons, yielding a subluminal LV scale of about...

  2. Examining Lorentz invariance violation with three remarkable GRB photons

    astro-ph.HE 2025-04 conditional novelty 4.0 of 10

    Adding three extreme GRB photons preserves the fitted Lorentz-violation scale E_LV ~ 3e17 GeV, but only when an energy-dependent intrinsic delay term, itself a fitting construct, absorbs the new TeV photons.

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