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arXiv 2108.05804astro-ph.HEgr-qchep-ph
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光速变化的伽马射线暴的爆前事件

Pre-burst events of gamma-ray bursts with light speed variation

Jie Zhu, Bo-Qiang Ma

摘要:

以往对伽马射线暴~(GRB)高能光子事件的研究表明,在暴源处存在光速变化$v(E)=c(1-E/E_{\mathrm{LV}})$与$E_{\mathrm{LV}}=3.6\times10^{17}~\mathrm{ GeV}$,以及高能光子比低能光子提前10秒出射的预爆现象。然而,在洛伦兹不变性破坏的情况下,考虑与能量相关的光速,由于光速的变化,高能量光子比低能量光子传播得更慢,因此它们通常在观测到的GRB数据中的低能量光子之后被检测到。在Fermi Gamma ray Space Telescope~(FGST)中,我们发现了4个比低能光子更早观测到的高能光子事件,对这些光子事件的分析支持了伽玛暴高能光子的预爆发假设和光速的能量依赖性。

英文摘要:

Previous researches on high-energy photon events from gamma-ray bursts~(GRBs) suggest a light speed variation $v(E)=c(1-E/E_{\mathrm{LV}})$ with $E_{\mathrm{LV}}=3.6\times10^{17}~\mathrm{ GeV}$, together with a pre-burst scenario that hight-energy photons come out about 10 seconds earlier than low-energy photons at the GRB source. However, in the Lorentz invariance violating scenario with an energy dependent light speed considered here, high-energy photons travel slower than low-energy photons due to the light speed variation, so that they are usually detected after low-energy photons in observed GRB data. Here we find four high-energy photon events which were observed earlier than low-energy photons from Fermi Gamma-ray Space Telescope~(FGST), and analysis on these photon events supports the pre-burst scenario of high energy photons from GRBs and the energy dependence of light speed listed above.

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