Constraints on Lorentz invariance violation from the LHAASO observation of GRB 221009A

被引：5

作者：

Yang, Yu -Ming ^{[1
,2
]}

Bi, Xiao-Jun ^{[1
,2
]}

Yin, Peng-Fei ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2024年 / 04期

基金：

中国国家自然科学基金;

关键词：

quantum gravity phenomenology; gamma ray theory; QUANTUM-GRAVITY; PHOTONS;

D O I：

10.1088/1475-7516/2024/04/060

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In some quantum gravity (QG) theories, Lorentz symmetry may be broken above the Planck scale. The Lorentz invariance violation (LIV) may induce observable effects at low energies and be detected at high energy astrophysical measurements. The Large High Altitude Air Shower Observatory (LHAASO) has detected the onset, rise, and decay phases of the afterglow of GRB 221009A, covering a wide energy range of photons approximately from 0.2 to 13 TeV. This observation provides an excellent opportunity to study the Lorentz invariance violation effect. In this study, we simultaneously utilize the data from the KM2A and WCDA detectors of LHAASO, and apply two event by event methods, namely the pair view method and maximum likelihood method, to investigate LIV. We obtain stringent constraints on the QG energy scale. For instance, through the maximum likelihood method, we determine the 95% confidence level lower limits to be E-QG,E-1 > 14.7 (6.5) x 10(19) GeV for the subluminal (superluminal) scenario of n = 1, and E-QG,E-2 > 12.0 (7.2) x 10(11) GeV for the subluminal (superluminal) scenario of n = 2. We find that the rapid rise and slow decay behaviors of the afterglow can impose strong constraints on the subluminal scenario, while the constraints are weaker for the superluminal scenario.

引用

页数：21

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