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General Relativity and Quantum Cosmology

arXiv:0706.4039 (gr-qc)
[Submitted on 27 Jun 2007 (v1), last revised 27 Sep 2007 (this version, v2)]

Title:Study of Lorentz violation in INTEGRAL Gamma-Ray Bursts

Authors:Raphael Lamon, Nicolas Produit, Frank Steiner
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Abstract: We search for possible time lags caused by quantum gravitational (QG) effects using gamma-ray bursts (GRBs) detected by INTEGRAL. The advantage of this satellite is that we have at our disposal the energy and arrival time of every detected single photon, which enhances the precision of the time resolution. We present a new method for seeking time lags in unbinned data using a maximum likelihood method and support our conclusions with Monte Carlo simulations. The analysis of the data yields a mass scale well below the Planck mass whose value may however increase if better statistics of GRBs were available. Furthermore, we disagree with previous studies in which a non-monotonic function of the redshift was used to perform a linear fit.
Comments: 14 pages, 4 figures
Subjects: General Relativity and Quantum Cosmology (gr-qc); Astrophysics (astro-ph); High Energy Physics - Theory (hep-th)
Cite as: arXiv:0706.4039 [gr-qc]
  (or arXiv:0706.4039v2 [gr-qc] for this version)
  https://doi.org/10.48550/arXiv.0706.4039
Journal reference: Gen.Rel.Grav.40:1731-1743,2008
Related DOI: https://doi.org/10.1007/s10714-007-0580-6

Submission history

From: Raphael Lamon [view email]
[v1] Wed, 27 Jun 2007 14:55:24 UTC (402 KB)
[v2] Thu, 27 Sep 2007 09:01:27 UTC (43 KB)
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