Exploring Anisotropic Lorentz Invariance Violation from the Spectral-Lag Transitions of Gamma-Ray Bursts

Abstract

The observed spectral lags of gamma-ray bursts (GRBs) have been widely used to explore possible violations of Lorentz invariance. However, these studies were generally performed by concentrating on the rough time lag of a single highest-energy photon and ignoring the intrinsic time lag at the source. A new way to test nonbirefringent Lorentz-violating effects has been proposed by analyzing the multi-photon spectral-lag behavior of a GRB that displays a positive-to-negative transition. This method gives both a plausible description of the intrinsic energy-dependent time lag and comparatively robust constraints on Lorentz-violating effects. In this work, we conduct a systematic search for Lorentz-violating photon dispersion from the spectral-lag transition features of 32 GRBs. By fitting the spectral-lag data of these 32 GRBs, we place constraints on a variety of isotropic and anisotropic Lorentz-violating coefficients with mass dimension $d=6$ and $8$. While our dispersion constraints are not competitive with existing bounds, they have the promise to complement the full coefficient space.

17 pages, 2 figures, 2 tables. Published by Universe. Constribution to the Special Issue "Advances in Astrophysics and Cosmology-in Memory of Prof. Tan Lu"

References in corpus (12)

• Electrodynamics with Lorentz-violating operators of arbitrary dimension
• A decade of Gamma-Ray Bursts observed by $Fermi$-LAT: The 2${}^{nd}$ GRB catalog
• Lorentz-violation-induced arrival delays of cosmological particles
• What Do We Know About Lorentz Invariance?
• Sensitive polarimetric search for relativity violations in gamma-ray bursts
• Lorentz-violating electrodynamics and the cosmic microwave background
• A New Test of Lorentz Invariance Violation: the Spectral Lag Transition of GRB 160625B
• A Constraint on Planck-scale Modifications to Electrodynamics with CMB polarization data
• Constraining Anisotropic Lorentz Violation via the Spectral-Lag Transition of GRB 160625B
• Lorentz Invariance Violation Limits from the Spectral Lag Transition of GRB~190114C
• A Further Test of Lorentz Violation from the Rest-Frame Spectral Lags of Gamma-Ray Bursts
• New constraints on Lorentz invariance violation with polarized gamma-ray bursts