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Journal Article

New constraints on Planck-scale Lorentz Violation in QED from the Crab Nebula


Kirk,  John G.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

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Maccione, L., Liberati, S., Celotti, A., & Kirk, J. G. (2007). New constraints on Planck-scale Lorentz Violation in QED from the Crab Nebula. Journal of Cosmology and Astroparticle Physics, 10: 013, pp. 1-24. doi:10.1088/1475-7516/2007/10/013.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-7BD7-0
We set constraints on O(E/M) Lorentz Violation in QED in an effective field theory framework. A major consequence of such assumptions is the modification of the dispersion relations for electrons/positrons and photons, which in turn can affect the electromagnetic output of astrophysical objects. We compare the information provided by multiwavelength observations with a full and self-consistent computation of the broad-band spectrum of the Crab Nebula. We cast constraints of order 10^{-5} at 95% confidence level on the Lorentz Violation parameters.