Lorentz Invariance Violation Limits from the Spectral-lag Transition of GRB 190114C
Lorentz Invariance Violation Limits from the Spectral-lag Transition of GRB 190114C
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GRB 190114C 光谱滞后跃迁的洛伦兹不变性违反限制
DOI：
10.3847/1538-4357/abc624
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发表时间：
2020-10
影响因子：
4.9
通讯作者：
Zhu Zong-Hong
中科院分区：
文献类型：
--
作者：
Du Shen-Shi;Lan Lin;Wei Jun-Jie;Zhou Zi-Min;Gao He;Jiang Lu-Yao;Zhang Bin-Bin;Liu Zi-Ke;Wu Xue-Feng;Liang En-Wei;Zhu Zong-Hong
伽马射线暴(GRB)的光谱滞后被认为是最有可能违反洛伦兹不变性(LIV)的探测手段。然而，这些约束通常依赖于对不同能带中未知本征时滞的假设以及对单个最高能量光子的使用。提出了一种测试LiV效应的新方法，即通过直接拟合具有明确的正滞后到负滞后转变的伽玛暴的光谱滞后行为。该方法同时给出了量子引力能量标度(EQG)的本征时滞和稳健下限的合理公式。在这项工作中，我们对伽玛暴190114C的光谱滞后数据进行了全局拟合，基于贝叶斯方法考虑了可能的LiV效应。然后，我们得到了EQG的极限和标准模型扩张的系数。在我们的分析中输出的贝叶斯因子显示了伽玛暴190114C的光谱滞后转变的非常有力的证据。我们对LIV的各种各向同性和各向异性系数的约束比现有的边界要弱一些，但它们可以被视为相对稳健的，并有望补充现有的LIV约束。更高能量发射和更高时间分辨率的伽玛暴的观测将有助于更好地描述色散光子区的本征时滞和更严格的LIV约束。
The spectral lags of gamma-ray bursts (GRBs) have been viewed as the most promising probes of the possible violations of Lorentz invariance (LIV). However, these constraints usually depend on the assumption of the unknown intrinsic time lag in different energy bands and the use of a single highest-energy photon. A new approach to test the LIV effects has been proposed by directly fitting the spectral-lag behavior of a GRB with a well-defined transition from positive lags to negative lags. This method simultaneously provides a reasonable formulation of the intrinsic time lag and robust lower limits on the quantum-gravity energy scales (EQG). In this work, we perform a global fitting to the spectral-lag data of GRB 190114C by considering the possible LIV effects based on a Bayesian approach. We then derive limits on EQG and the coefficients of the standard model extension. The Bayes factor output in our analysis shows very strong evidence for the spectral-lag transition in GRB 190114C. Our constraints on a variety of isotropic and anisotropic coefficients for LIV are somewhat weaker than existing bounds, but they can be viewed as comparatively robust and have the promise to complement existing LIV constraints. The observations of GRBs with higher-energy emissions and higher temporal resolutions will contribute to a better formulation of the intrinsic time lag and more rigorous LIV constraints in the dispersive photon sector.
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DOI：
10.1017/cbo9780511802461
发表时间：
2009-12
期刊：
--
影响因子：
--
作者：
M. Hobson;A. Jaffe;A. Liddle;P. Mukherjee;D. Parkinson
通讯作者：
M. Hobson;A. Jaffe;A. Liddle;P. Mukherjee;D. Parkinson
通过 GRB 160625B 的光谱滞后转变约束各向异性洛伦兹破坏
影响因子：
4.9
作者：
Wei Jun-Jie;Wu Xue-Feng;Zhang Bin-Bin;Shao Lang;Meszaros Peter;Kostelecky V. Alan
通讯作者：
Kostelecky V. Alan
DOI：
--
发表时间：
2002
期刊：
--
影响因子：
--
作者：
Editor-in-Chief B. Iyer
通讯作者：
Editor-in-Chief B. Iyer
DOI：
10.1086/595815
发表时间：
2008-09
期刊：
The Astrophysical Journal Letters
影响因子：
--
作者：
A. Kostelecký;M. Mewes
通讯作者：
A. Kostelecký;M. Mewes
DOI：
10.1088/0004-637x/778/1/3
发表时间：
2013-04
期刊：
The Astrophysical Journal
影响因子：
--
作者：
A. Shenoy;E. Sonbas;C. Dermer;L. Maximon;K. Dhuga;P. N. Bhat;J. Hakkila;W. Parke;G. MacLachlan-G.-MacLa
通讯作者：
A. Shenoy;E. Sonbas;C. Dermer;L. Maximon;K. Dhuga;P. N. Bhat;J. Hakkila;W. Parke;G. MacLachlan-G.-MacLa