标题： 轴子-光子转换的LHAASO多TeV和PeV光子 显示英文标题

标题： Axion-Photon Conversion of LHAASO Multi-TeV and PeV Photons

摘要： 大型高海拔空气簇射观测站（LHAASO）报告检测到了大量多太电子伏特尺度的光子事件，还包括几个拍电子伏特尺度的伽马射线光子事件，能量高达1.4拍电子伏特。这些事件中有一些可能具有河外起源的可能性尚未被排除。在这里，我们提出了一种基于轴子-光子转换场景的极高能（VHE）和超极高能（UHE）光子传播机制，该机制允许河外高于阈值的光子被地球上的观测者探测到。我们表明，轴子-光子转换可以作为另一种机制，除了由于洛伦兹不变性破坏引起的阈值异常之外，用于解释新观测到的伽马射线暴GRB 221009A的极高能特征。 显示英文摘要

摘要： The Large High Altitude Air Shower Observatory (LHAASO) has reported the detection of a large number of multi-TeV-scale photon events including also several PeV-scale gamma-ray-photon events with energy as high as 1.4 PeV. The possibility that some of these events may have extragalactic origins is not yet excluded. Here we propose a mechanism for the traveling of very-high-energy (VHE) and ultra-high-energy (UHE) photons based upon the axion-photon conversion scenario, which allows extragalactic above-threshold photons to be detected by observers on the Earth. We show that the axion-photon conversation can serve as an alternative mechanism, besides the threshold anomaly due to Lorentz invariance violation, for the very-high-energy features of the newly observed gamma ray burst GRB 221009A.