Using recent polarimetric observations of the Crab Nebula in the hard X-ray band by INTEGRAL, we show that the absence of vacuum birefringence effects constrains O(E/M) Lorentz violation in QED to the level |\xi| < 9x10^{-10} at three sigma CL, tightening by more than three orders of magnitude previous constraints. We show that planned X-ray polarimeters have the potential the potential to probe |\xi|~ 10^{-16} by detecting polarization in active galaxies at red-shift ~1.
Gamma-ray polarization constraints on Planck scale violations of special relativity / Maccione, L; Liberati, Stefano; Celotti, Anna Lisa; Kirk, J. G.; Ubertini, P.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 78:10(2008), pp. 103003.1-103003.5. [10.1103/PhysRevD.78.103003]
Gamma-ray polarization constraints on Planck scale violations of special relativity
Liberati, Stefano;Celotti, Anna Lisa;
2008-01-01
Abstract
Using recent polarimetric observations of the Crab Nebula in the hard X-ray band by INTEGRAL, we show that the absence of vacuum birefringence effects constrains O(E/M) Lorentz violation in QED to the level |\xi| < 9x10^{-10} at three sigma CL, tightening by more than three orders of magnitude previous constraints. We show that planned X-ray polarimeters have the potential the potential to probe |\xi|~ 10^{-16} by detecting polarization in active galaxies at red-shift ~1.| File | Dimensione | Formato | |
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