Lamon 2008 GLAST 和Lorentz violation

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· arXiv e-print (arXiv:0805.1219)

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Title:		GLAST and Lorentz violation
Authors:		Lamon, Raphael
Publication:		eprint arXiv:0805.1219
Publication Date:		05/2008
Origin:		ARXIV
Keywords:		Astrophysics
Comment:		11 pages, 7 figures and 2 tables
Bibliographic Code:		2008arXiv0805.1219L

Abstract

We study possible Lorentz violations by means of gamma-ray bursts (GRB) with special focus on the Large Array Telescope (LAT) of GLAST. We simulate bursts with gtobssim and introduce a Lorentz violating term in the arrival times of the photons. We further perturb these arrival times and energies with a Gaussian distribution corresponding to the time resp. energy resolution of GLAST. We then vary the photon flux in gtobssim in order to derive a relation between the photon number and the standard deviation of the Lorentz violating term. We conclude with the fact that our maximum likelihood method as first developed in [1] is able to make a statement whether Nature breaks the Lorentz symmetry if the number of bursts with known redshifts is of the order of 100.

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