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arXiv 0911.2276hep-phastro-ph.HEgr-qc
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具有甚高能光子发射的宇宙学物体的洛伦兹破坏

Lorentz violation from cosmological objects with very high energy photon emissions

Lijing Shao, Zhi Xiao, Bo-Qiang Ma

摘要:

洛伦兹破坏(LV)是由一些量子引力理论预言的,其中光子色散关系被修改,光速变得与能量相关。因此,它导致高能光子和低能光子之间的微小时间延迟。来自宇宙学距离的甚高能量(VHE)光子发射可以将这些微小的LV效应放大到可观测的数量。本文分析了费米观测到的四个VHE $γ$射线暴,并简要回顾了活动星系核的三个TeV耀斑的约束。进一步,我们首次对VHE伽玛暴进行了稳健分析,考虑了源引起的内禀时间滞后,并给出了能量线性依赖的量子引力能$\sim 2 \times 10^{17}$ GeV和能量二次依赖的量子引力能$\sim 5 \times 10^9$ GeV的估计.然而,由于缺乏数据,统计数据并不充分,需要进一步的观察结果来更好地限制LV效应。

英文摘要:

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 $γ$-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 $\sim 2 \times 10^{17}$ GeV for linear energy dependence, and $\sim 5 \times 10^9$ 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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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