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

【摘要】 The Large High Altitude Air Shower Observatory(LHAASO) has reported the detection of a large number of multi-Te V-scale photon events also including several Pe V-scale gamma-ray-photon events with energy as high as 1.4 Pe V. 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 and ultra-high-energy photons based upon the axionphoton 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.更多还原

【Abstract】 The Large High Altitude Air Shower Observatory(LHAASO) has reported the detection of a large number of multi-Te V-scale photon events also including several Pe V-scale gamma-ray-photon events with energy as high as 1.4 Pe V. 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 and ultra-high-energy photons based upon the axionphoton 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.更多还原