Exploring Lorentz Invariance Violation from Ultra-high-energy Gamma Rays Observed by LHAASO
High Energy Astrophysical Phenomena
2026-01-13 v2 High Energy Physics - Phenomenology
Abstract
Recently the LHAASO Collaboration published the detection of 12 ultra-high-energy gamma-ray sources above 100 TeV, with the highest energy photon reaching 1.4 PeV. The first detection of PeV gamma rays from astrophysical sources may provide a very sensitive probe of the effect of the Lorentz invariance violation (LIV), which results in decay of high-energy gamma rays in the superluminal scenario and hence a sharp cutoff of the energy spectrum. Two highest energy sources are studied in this work. No signature of the existence of LIV is found in their energy spectra, and the lower limits on the LIV energy scale are derived. Our results show that the first-order LIV energy scale should be higher than about 10^5 times the Planck scale M_{pl} and that the second-order LIV scale is >10^{-3}M_{pl}. Both limits improve by at least one order of magnitude the previous results.
Keywords
Cite
@article{arxiv.2106.12350,
title = {Exploring Lorentz Invariance Violation from Ultra-high-energy Gamma Rays Observed by LHAASO},
author = {Zhen Cao and F. Aharonian and Q. An and Axikegu and L. X. Bai and Y. X. Bai and Y. W. Bao and D. Bastieri and X. J. Bi and Y. J. Bi and H. Cai and J. T. Cai and Zhe Cao and J. Chang and J. F. Chang and B. M. Chen and E. S. Chen and J. Chen and Liang Chen and Liang Chen and Long Chen and M. J. Chen and M. L. Chen and Q. H. Chen and S. H. Chen and S. Z. Chen and T. L. Chen and X. L. Chen and Y. Chen and N. Cheng and Y. D. Cheng and S. W. Cui and X. H. Cui and Y. D. Cui and B. D'Ettorre Piazzoli and B. Z. Dai and H. L. Dai and Z. G. Dai and Danzengluobu and D. della Volpe and X. J. Dong and K. K. Duan and J. H. Fan and Y. Z. Fan and Z. X. Fan and J. Fang and K. Fang and C. F. Feng and L. Feng and S. H. Feng and Y. L. Feng and B. Gao and C. D. Gao and L. Q. Gao and Q. Gao and W. Gao and M. M. Ge and L. S. Geng and G. H. Gong and Q. B. Gou and M. H. Gu and F. L. Guo and J. G. Guo and X. L. Guo and Y. Q. Guo and Y. Y. Guo and Y. A. Han and H. H. He and H. N. He and J. C. He and S. L. He and X. B. He and Y. He and M. Heller and Y. K. Hor and C. Hou and X. Hou and H. B. Hu and S. Hu and S. C. Hu and X. J. Hu and D. H. Huang and Q. L. Huang and W. H. Huang and X. T. Huang and X. Y. Huang and Z. C. Huang and F. Ji and X. L. Ji and H. Y. Jia and K. Jiang and Z. J. Jiang and C. Jin and T. Ke and D. Kuleshov and K. Levochkin and B. B. Li and Cheng Li and Cong Li and F. Li and H. B. Li and H. C. Li and H. Y. Li and Jian Li and Jie Li and K. Li and W. L. Li and X. R. Li and Xin Li and Xin Li and Y. Li and Y. Z. Li and Zhe Li and Zhuo Li and E. W. Liang and Y. F. Liang and S. J. Lin and B. Liu and C. Liu and D. Liu and H. Liu and H. D. Liu and J. Liu and J. L. Liu and J. S. Liu and J. Y. Liu and M. Y. Liu and R. Y. Liu and S. M. Liu and W. Liu and Y. Liu and Y. N. Liu and Z. X. Liu and W. J. Long and R. Lu and H. K. Lv and B. Q. Ma and L. L. Ma and X. H. Ma and J. R. Mao and A. Masood and Z. Min and W. Mitthumsiri and T. Montaruli and Y. C. Nan and B. Y. Pang and P. Pattarakijwanich and Z. Y. Pei and M. Y. Qi and Y. Q. Qi and B. Q. Qiao and J. J. Qin and D. Ruffolo and V. Rulev and A. S'aiz and L. Shao and O. Shchegolev and X. D. Sheng and J. R. Shi and H. C. Song and Yu. V. Stenkin and V. Stepanov and Y. Su and Q. N. Sun and X. N. Sun and Z. B. Sun and P. H. T. Tam and Z. B. Tang and W. W. Tian and B. D. Wang and C. Wang and H. Wang and H. G. Wang and J. C. Wang and J. S. Wang and L. P. Wang and L. Y. Wang and R. N. Wang and W. Wang and W. Wang and X. G. Wang and X. J. Wang and X. Y. Wang and Y. Wang and Y. D. Wang and Y. J. Wang and Y. P. Wang and Z. H. Wang and Z. X. Wang and Zhen Wang and Zheng Wang and D. M. Wei and J. J. Wei and Y. J. Wei and T. Wen and C. Y. Wu and H. R. Wu and S. Wu and W. X. Wu and X. F. Wu and S. Q. Xi and J. Xia and J. J. Xia and G. M. Xiang and D. X. Xiao and G. Xiao and H. B. Xiao and G. G. Xin and Y. L. Xin and Y. Xing and D. L. Xu and R. X. Xu and L. Xue and D. H. Yan and J. Z. Yan and C. W. Yang and F. F. Yang and J. Y. Yang and L. L. Yang and M. J. Yang and R. Z. Yang and S. B. Yang and Y. H. Yao and Z. G. Yao and Y. M. Ye and L. Q. Yin and N. Yin and X. H. You and Z. Y. You and Y. H. Yu and Q. Yuan and H. D. Zeng and T. X. Zeng and W. Zeng and Z. K. Zeng and M. Zha and X. X. Zhai and B. B. Zhang and H. M. Zhang and H. Y. Zhang and J. L. Zhang and J. W. Zhang and L. X. Zhang and Li Zhang and Lu Zhang and P. F. Zhang and P. P. Zhang and R. Zhang and S. R. Zhang and S. S. Zhang and X. Zhang and X. P. Zhang and Y. F. Zhang and Y. L. Zhang and Yi Zhang and Yong Zhang and B. Zhao and J. Zhao and L. Zhao and L. Z. Zhao and S. P. Zhao and F. Zheng and Y. Zheng and B. Zhou and H. Zhou and J. N. Zhou and P. Zhou and R. Zhou and X. X. Zhou and C. G. Zhu and F. R. Zhu and H. Zhu and K. J. Zhu and X. Zuo},
journal= {arXiv preprint arXiv:2106.12350},
year = {2026}
}
Comments
7 pages, 3 figures