Constraints on Lorentz Invariance Violation using INTEGRAL/IBIS observations of GRB041219A
arXiv:1106.1068 · doi:10.1103/PhysRevD.83.121301
Abstract
One of the experimental tests of Lorentz invariance violation is to measure the helicity dependence of the propagation velocity of photons originating in distant cosmological obejcts. Using a recent determination of the distance of the Gamma-Ray Burst GRB 041219A, for which a high degree of polarization is observed in the prompt emission, we are able to improve by 4 orders of magnitude the existing constraint on Lorentz invariance violation, arising from the phenomenon of vacuum birefringence.
5 pages, 3 figures, accepted for publication as a Rapid Communication in Physical Review D