Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011sf2a.conf..529b&link_type=abstract
SF2A-2011: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics Eds.: G. Alecian, K. Belkacem,
Astronomy and Astrophysics
Astrophysics
Cta, Active Galaxies, Quantum Gravity, Lorentz Invariance Violation
Scientific paper
In the recent years, many results have been published about a possible violation of Lorentz Invariance in the frame of Quantum Gravity (QG) models measuring time delays in the arrival times of very high energy (VHE, >100 GeV) gamma-ray photons from distant flaring active galaxies. These photons have been detected by the current ground-based VHE Cherenkov detectors (HESS, MAGIC, VERITAS) and so far, no deviations in the speed of light in vacuum have been seen either for linear or for quadratic scales. The new generation of ground-based instruments "the Cherenkov Telescope Array" (CTA) will be able to probe deeper into this area due to its increased sensitivity (one order of magnitude better than the current detectors) and broader energy range (above 10 GeV). Based on a maximum likelihood technique, a quantitative study is presented of the potential of CTA to detect possible QG effects. In addition, different array configurations are compared in an attempt to maximize the sensitivity to Lorentz Invariance Violation (LIV) effects.
Bolmont Julien
Jacholkowska A.
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