论文标题
32 Fermi Gamma-ray爆发的光谱滞后过渡及其在约束Lorentz不变性违规的应用
Spectral Lag Transition of 32 Fermi Gamma-ray Bursts and their Application on Constraining Lorentz Invariance Violation
论文作者
论文摘要
光谱滞后的阳性到阴性过渡是在少数GRB中报道的不常见特征。在可能违反洛伦兹的不变性的假设下，已经提出了这种功能的应用来限制光光子的临界量子重力能（$ e _ {\ rm qg} $）。在先前的案例研究中，本文系统地检查了最新的Fermi/GBM GRB样品的滞后过渡功能，以建立对洛伦兹不变性违规（LIV）的综合物理限制。这次搜索导致32个GRB带有红移，显示出滞后变换现象。我们首先将32个GRB的每个滞后关系拟合具有经验平滑损坏的功率定律功能，并发现滞后过渡通常发生在约400 keV。然后，我们将LIV效应实现到FIT中，这使我们能够约束$ e _ {\ rm Qg} $的线性和二次值的下限，通常分别以$ 1.5 \ times 10^{14} $ GEV和$ 8 \ $ 8 \ times 10^{5} $ GEV分配。
The positive-to-negative transition of spectral lag is an uncommon feature reported in a small number of GRBs. An application of such a feature has been made to constrain the critical quantum gravity energy ($E_{\rm QG}$) of the light photons under the hypothesis that the Lorentz invariance might be violated. Motivated by previous case studies, this paper systematically examined the up-to-date Fermi/GBM GRB sample for the lag transition feature to establish a comprehensive physical limit on the Lorentz Invariance Violation (LIV). This search resulted in 32 GRBs with redshift available, which exhibit the lag-transition phenomenon. We first fit each of the lag-E relations of the 32 GRBs with an empirical smoothly broken power law function, and found that the lag transition occurs typically at about 400 keV. We then implemented the LIV effect into the fit, which enabled us to constrain the lower limit of the linear and quadratic values of $E_{\rm QG}$, which are typically distributed at $1.5\times 10^{14}$ GeV and $8\times 10^{5}$ GeV, respectively.
