Energy-dependent intrinsic time delay of gamma-ray bursts on testing Lorentz invariance violation

被引：3
作者：
Song, Hanlin [1 ]
Ma, Bo-Qiang [1 ,2 ]
机构：
[1] Peking Univ, Sch Phys, Beijing 100871, Peoples R China
[2] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
来源：
PHYSICS LETTERS B | 2024年 / 856卷
基金：
中国国家自然科学基金;
关键词：
Gamma ray burst; Intrinsic time delay; Lorentz invariance violation; LIGHT SPEED VARIATION; QUANTUM-GRAVITY; RELATIVITY;
D O I：
10.1016/j.physletb.2024.138951
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
High-energy photons of gamma-ray bursts (GRBs) might be emitted at different intrinsic times with energy dependence at the source. In this letter, we expand the model from previous works on testing the Lorentz Invariance Violation (LV) with the observed GRB data from the Fermi Gamma-ray Space Telescope. We reanalyze the previous data with the full Bayesian parameter estimation method and get consistent results by assuming that the time delays are due to an LV term and a constant intrinsic time delay term. Subsequently, we neglect the LV effect and only consider the intrinsic time delay effect. We assume a common intrinsic time delay term along with a source energy correlated time delay of high-energy photons. We find that the energy-dependent emission times can also explain the observed GRB data of high-energy photon events. Finally, we integrate these two physical mechanisms into a unified model to distinguish and evaluate their respective contributions using the observed GRB data.
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页数：6
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