Improved limits on Lorentz invariance violation from astrophysical gamma-ray sources

Lorentz invariance (LI) has a central role in science and its violation (LIV) at some high-energy scale has been related to possible solutions for several of the most intriguing puzzles in nature such as dark matter, dark energy, cosmic rays generation in extreme astrophysical objects and quantum gr...

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Bibliographic Details
Published in:Physical review. D 2019-02, Vol.99 (4), Article 043015
Main Authors: Lang, Rodrigo Guedes, Martínez-Huerta, Humberto, de Souza, Vitor
Format: Article
Language:English
Subjects:
Cosmic rays
Dark energy
Dark matter
Data analysis
Energy spectra
Gamma rays
Invariance
Observatories
Quantum gravity
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Summary:Lorentz invariance (LI) has a central role in science and its violation (LIV) at some high-energy scale has been related to possible solutions for several of the most intriguing puzzles in nature such as dark matter, dark energy, cosmic rays generation in extreme astrophysical objects and quantum gravity. We report on a search for LIV signal based on the propagation of gamma rays from astrophysical sources to Earth. An innovative data analysis is presented which allowed us to extract unprecedented information from the most updated data set composed of 111 energy spectra of 38 different sources measured by current gamma-ray observatories. No LIV signal was found, and we show that the data are best described by LI assumption. We derived limits for the LIV energy scale at least 3 times better than the ones currently available in the literature for subluminal signatures of LIV in high-energy gamma rays.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.99.043015