洛伦兹不变性引起的阈值异常与GRB 221009A的高能宇宙光子发射

IF 4.2 3区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Astroparticle Physics Pub Date : 2023-06-01 DOI:10.1016/j.astropartphys.2023.102831

Hao Li , Bo-Qiang Ma

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引用次数: 22

摘要

据报道，大型高空空气阵雨天文台(LHAASO)观测到来自GRB 221009A的高能光子，最高能量达到18 TeV。我们发现观测这样的高能光子是非常重要的，因为河外背景光会严重吸收这些光子，而通量太弱而无法观测到。因此，我们讨论了观察这些光子的潜在机制，并提出洛伦兹不变性破坏引起的γγ→e−e+过程的阈值异常提供了解释这一现象的候选机制。

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Lorentz invariance violation induced threshold anomaly versus very-high energy cosmic photon emission from GRB 221009A

It has been reported that the Large High Altitude Air Shower Observatory (LHAASO) observed very high energy photons from GRB 221009A, with the highest energy reaching 18 TeV. We find that observation of such high energy photons is quite nontrivial since extragalactic background light could absorb these photons severely and the flux is too weak to be observed. Therefore we discuss a potential mechanism for us to observe these photons, and suggest that Lorentz invariance violation induced threshold anomaly of the process $γ γ \to e^{-} e^{+}$ provides a candidate to explain this phenomenon.

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来源期刊

Astroparticle Physics 地学天文-天文与天体物理

CiteScore

8.00

自引率

2.90%

发文量

审稿时长

79 days

期刊介绍： Astroparticle Physics publishes experimental and theoretical research papers in the interacting fields of Cosmic Ray Physics, Astronomy and Astrophysics, Cosmology and Particle Physics focusing on new developments in the following areas: High-energy cosmic-ray physics and astrophysics; Particle cosmology; Particle astrophysics; Related astrophysics: supernova, AGN, cosmic abundances, dark matter etc.; Gravitational waves; High-energy, VHE and UHE gamma-ray astronomy; High- and low-energy neutrino astronomy; Instrumentation and detector developments related to the above-mentioned fields.