Study of Lorentz violation in INTEGRAL Gamma-Ray Bursts

Understand

We search for possible time lags caused by quantum gravitational (QG) effects using gamma-ray bursts (GRBs) detected by INTEGRAL.

• The advantage of this satellite is that we have at our disposal the energy and arrival time of every detected single photon, which enhances the precision of the time resolution.
• We present a new method for seeking time lags in unbinned data using a maximum likelihood method and support our conclusions with Monte Carlo simulations.
• The analysis of the data yields a mass scale well below the Planck mass whose value may however increase if better statistics of GRBs were available.