Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dmap.conf..413j&link_type=abstract
DARK MATTER IN ASTROPHYSICS AND PARTICLE PHYSICS . Proceedings of the 7th International Heidelberg Conference on Dark 2009 . Hel
Astronomy and Astrophysics
Astrophysics
Lorentz Symmetry Breaking, Quantum Gravity, Gamma Ray Bursts, Active Galaxies
Scientific paper
The study of time-lags in light curves of cosmological sources such as Gamma-Ray Bursts and Active Galaxies, as a function of energy and redshift of the source, may lead to a detection of Lorentz Symmetry breaking or effects due to Quantum Gravity in extra-dimensions or Loop Quantum Gravity models. In this paper, the recent time-of-flight studies with photons published by the space and ground based experiments are reviewed. Various methods used in the time delay searches are described, and their performance discusseed. Since no significant time-lag value was found within experimental precision of the maesurements, the 95% Confidence Level limit on the Quantum Gravity scale of the order of 1016GeV and 1018GeV for the linear term in the standard photon dispersion relations, were established from the Gamma-Ray Burst and Active Galaxy data respectively.
Bolmont Julien
Jacholkowska A.
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