Lorentz violation from cosmological objects with very high energy photon emissions

被引：79

作者：

Shao, Lijing

Xiao, Zhi

Ma, Bo-Qiang ^{[1
]}

机构：

[1] Peking Univ, Sch Phys, Beijing 100871, Peoples R China

来源：

ASTROPARTICLE PHYSICS | 2010年 / 33卷 / 5-6期

基金：

中国国家自然科学基金;

关键词：

Lorentz violation; gamma-ray bursts; Active galactic nuclei; VACUUM REFRACTIVE-INDEX; GAMMA-RAY BURSTS; QUANTUM-GRAVITY; SPECIAL RELATIVITY; DISPERSION; SEARCH; LIMITS; TESTS;

D O I：

10.1016/j.astropartphys.2010.03.003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Lorentz violation (LV) is predicted by some quantum gravity theories, where photon dispersion relation is modified, and the speed of light becomes energy-dependent. Consequently, it results in a tiny time delay between high energy photons and low energy ones. Very high energy (VHE) photon emissions from cosmological distance can amplify these tiny LV effects into observable quantities. Here we analyze four VHE gamma-ray bursts (GRBs) from Fermi observations, and briefly review the constraints from three TeV flares of active galactic nuclei (AGNs) as well. One step further, we present a first robust analysis of VHE GRBs taking the intrinsic time lag caused by sources into account, and give an estimate to quantum gravity energy similar to 2 x 10(17) GeV for linear energy dependence, and similar to 5 x 10(9) GeV for quadratic dependence. However, the statistics is not sufficient due to the lack of data, and further observational results are desired to constrain LV effects better. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：312 / 315

页数：4

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