2007/07/31 by Luca Maccione, Stefano Liberati, Annalisa Celotti +2 · 1 citation
Physics and Astronomy · #Cosmology and Gravitation Theories #Neutrino Physics Research #Noncommutative and Quantum Gravity Theories #astro-ph #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1088/1475-7516/2007/10/013
published as JCAP0710:013,2007 · 23 pages, 9 figures. v2: added comments and references, matches version accepted by JCAP
arxiv created 2007/10/04 · openalex publication_date 2007/10/19 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
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 the order of 10 −5 at 95% confidence level on the lepton Lorentz violation parameters.