# Regularity of high energy photon events from gamma ray bursts

@article{Xu2018RegularityOH,
title={Regularity of high energy photon events from gamma ray bursts},
author={Hao Xu and Bo Qiang Ma},
journal={arXiv: General Relativity and Quantum Cosmology},
year={2018}
}
• Published 24 January 2018
• Physics
• arXiv: General Relativity and Quantum Cosmology
The effect of Quantum Gravity (QG) may bring a tiny light speed variation as $v(E)=c(1-E/E_{\rm LV})$, where $E$ is the photon energy and $E_{\rm LV}$ is a Lorentz violation scale. A remarkable regularity was suggested in previous studies to look for the light speed variation from high energy photon events of Gamma Ray Bursts (GRBs). We provide a general analysis on the data of 25 bright GRBs observed by the Fermi Gamma-ray Space Telescope (FGST). Such method allows a completed scan over all…
26 Citations

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## References

SHOWING 1-10 OF 30 REFERENCES
Light speed variation from gamma-ray bursts
• Physics
• 2016
Abstract The effect of quantum gravity can bring a tiny light speed variation which is detectable through energetic photons propagating from gamma ray bursts (GRBs) to an observer such as the space
Robust Limits on Lorentz Violation from Gamma-Ray Bursts
• Physics
• 2005
We constrain the possibility of a non-trivial refractive index in free space corresponding to an energy-dependent velocity of light: c(E) ≃ c0(1 − E/M), where M is a mass scale that might represent
Lorentz violation from cosmological objects with very high energy photon emissions
• Physics
• 2010
Abstract Lorentz violation (LV) is predicted by some quantum gravity theories, where photon dispersion relation is modified, and the speed of light becomes energy-dependent. Consequently, it results
Quantum-gravity analysis of gamma-ray bursts using wavelets
• Physics
• 2003
In some models of quantum gravity, space-time is thought to have a foamy structure with non-trivial optical prop- erties. We probe the possibility that photons propagating in vacuum may exhibit a
Constraints on Lorentz Invariance Violation from Fermi -Large Area Telescope Observations of Gamma-Ray Bursts
We analyze the MeV/GeV emission from four bright gamma-ray bursts (GRBs) observed by the Fermi Large Area Telescope to produce robust, stringent constraints on a dependence of the speed of light in
An Algorithm for Detecting Quantum Gravity Photon Dispersion in Gamma-Ray Bursts: DisCan
• Physics
• 2006
DisCan is a new algorithm implementing photon dispersion cancellation in order to measure energy-dependent delays in variable sources. This method finds the amount of reversed dispersion that
A limit on the variation of the speed of light arising from quantum gravity effects
The detection of emission up to ∼31 GeV from the distant and short GRB, and no evidence for the violation of Lorentz invariance is found, which disfavour quantum-gravity theories in which the quantum nature of space–time on a very small scale linearly alters the speed of light.
Tests of quantum gravity from observations of γ-ray bursts
• Physics
Nature
• 1998
The recent confirmation that at least some γ-ray bursts originate at cosmological distances suggests that the radiation from them could be used to probe some of the fundamental laws of physics. Here
Lorentz violation from gamma-ray bursts
• Physics
• 2015
The constancy of light speed is a basic assumption in Einstein’s special relativity, and consequently the Lorentz invariance is a fundamental symmetry of space–time in modern physics. However, it is
Light speed variation from gamma ray burst GRB 160509A
• Physics
• 2016
Abstract It is postulated in Einstein's relativity that the speed of light in vacuum is a constant for all observers. However, the effect of quantum gravity could bring an energy dependence of light