Search for Lorentz Invariance Violation using Bayesian model comparison applied to Xiao et al. GRB spectral lag catalog

Abstract

We use the spectral lag catalog of 46 short GRBs aggregated by Xiao et al (2022), to carry out an independent search for Lorentz Invariance violation (LIV). For this purpose, we use a power-law model as a function of energy for the intrinsic astrophysical induced spectral lags. The expansion history of the universe needed for constraining LIV was obtained in a non-parametric method using cosmic chronometers. We use Bayesian model comparison to determine if the aforementioned spectral lags show evidence for LIV as compared to only astrophysically induced lags. We do not find any evidence for LIV, and obtain 95\% c.l. lower limits on the corresponding energy scale to be $4\times 10^{15}$ GeV and $6.8\times 10^9$ GeV for the linear and quadratic LIV models respectively. Our results obtained by using the flat $\Lambda$CDM model for characterizing the cosmic expansion history are consistent with those obtained using chronometers.

12 pages, 5 figures. Accepted for publication in EPJC

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Cited by in corpus (7)

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• Impact of Cosmology on Lorentz Invariance Violation Constraints from GRB Time-Delays
• Bayesian evidence for spectral lag transition due to Lorentz Invariance Violation for 32 Fermi/GBM Gamma-ray Bursts
• Probing for Lorentz Invariance Violation in Pantheon Plus Dominated Cosmology
• Comparison of $\Lambda$CDM and $R_h=ct$ with updated galaxy cluster $f_{gas}$ measurements using Bayesian inference
• Constraint on Lorentz Invariance Violation for spectral lag transition in GRB 160625B using profile likelihood
• A Concept of Assessment of LIV Tests with THESEUS Using the Gamma-Ray Bursts Detected by Fermi/GBM