Bounds on Lorentz Invariance Violation from MAGIC Observation of GRB 190114C.
PHYSICAL REVIEW LETTERS 2020;
125:021301. [PMID:
32701326 DOI:
10.1103/physrevlett.125.021301]
[Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 04/20/2020] [Accepted: 06/04/2020] [Indexed: 06/11/2023]
Abstract
On January 14, 2019, the Major Atmospheric Gamma Imaging Cherenkov telescopes detected GRB 190114C above 0.2 TeV, recording the most energetic photons ever observed from a gamma-ray burst. We use this unique observation to probe an energy dependence of the speed of light in vacuo for photons as predicted by several quantum gravity models. Based on a set of assumptions on the possible intrinsic spectral and temporal evolution, we obtain competitive lower limits on the quadratic leading order of speed of light modification.
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