A Further Test of Lorentz Violation from the Rest-Frame Spectral Lags of Gamma-Ray Bursts

Understand

Lorentz invariance violation (LIV) can manifest itself by an energy-dependent vacuum dispersion of light, which leads to arrival-time differences of photons with different energies originating from the same astronomical source.

• The spectral lags of gamma-ray bursts (GRBs) have been widely used to investigate the possible LIV effect.
• However, all current investigations used lags extracted in the observer frame only.
• In this work, we present, for the first time, an analysis of the LIV effect and its redshift dependence in the cosmological rest frame.