超新星遗迹仙后座 A 是否或曾经作为 PeVatron 运行？
高能天体物理现象
2023-10-27 v1
摘要
数十年来，超新星遗迹（SNRs）一直被认为是银河系宇宙线（CRs）的主要源。但 SNR 能否将 CR 质子加速到 PeV 能量从而主导直到拐折处的 CR 通量，目前正处于激烈的理论和现象学争论中。对 SNR 作为 CR PeVatron 能力的直接检验可由超高能（UHE；~TeV） 射线提供。在此背景下，历史 SNR 仙后座 A（Cas A）被认为是 UHE 观测最有希望的目标之一。本文展示了 LHAASO KM2A 探测器对 Cas A 及其邻近区域的观测。LHAASO KM2A 在 UHE 波段的非凡灵敏度，结合 Cas A 的年轻年龄，使我们能够推导出关于 Cas A 在爆炸后任何时期加速的 UHE 质子与原子核的能量预算的严格与模型无关的极限。该结果挑战了 Cas A 型 SNR 是银河系中 PeV CR 主要供给者的主流范式。
引用
@article{arxiv.2310.17082,
title = {Does or did the supernova remnant Cassiopeia A operate as a PeVatron?},
author = {Zhen Cao and F. Aharonian and Q. An and Axikegu and Y. X. Bai and Y. W. Bao and D. Bastieri and X. J. Bi and Y. J. Bi and J. T. Cai and Q. Cao and W. Y. Cao and Zhe Cao and J. Chang and J. F. Chang and A. M. Chen and E. S. Chen and Liang Chen and Lin 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 Y. Chen and N. Cheng and Y. D. Cheng and M. Y. Cui and S. W. Cui and X. H. Cui and Y. D. Cui and B. Z. Dai and H. L. Dai and Z. G. Dai and Danzengluobu and D. della Volpe and X. Q. Dong and K. K. Duan and J. H. Fan and Y. Z. Fan and J. Fang and K. Fang and C. F. Feng and L. Feng and S. H. Feng and X. T. Feng and Y. L. Feng and S. Gabici and B. Gao and C. D. Gao and L. Q. Gao and Q. Gao and W. Gao and W. K. Gao and M. M. Ge and L. S. Geng and G. Giacinti and G. H. Gong and Q. B. Gou and M. H. Gu and F. L. 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. Y. He and X. B. He and Y. He and M. Heller and Y. K. Hor and B. W. Hou and C. Hou and X. Hou and H. B. Hu and Q. Hu and S. C. Hu and D. H. Huang and T. Q. Huang and W. J. Huang and X. T. Huang and X. Y. Huang and Y. Huang and Z. C. Huang and X. L. Ji and H. Y. Jia and K. Jia and K. Jiang and X. W. Jiang and Z. J. Jiang and M. Jin and M. M. Kang and T. Ke and D. Kuleshov and K. Kurinov and B. B. Li and Cheng Li and Cong Li and D. Li and F. Li and H. B. Li and H. C. Li and H. Y. Li and J. Li and Jian Li and Jie Li and K. Li and W. L. Li and W. L. Li and X. R. Li and Xin 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. 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 R. Lu and Q. Luo and H. K. Lv and B. Q. Ma and L. L. Ma and X. H. Ma and J. R. Mao and Z. Min and W. Mitthumsiri and H. J. Mu and Y. C. Nan and A. Neronov and Z. W. Ou 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 A. Sáiz and D. Semikoz and C. Y. Shao and L. Shao and O. Shchegolev and X. D. Sheng and F. W. Shu 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 Q. W. Tang and Z. B. Tang and W. W. Tian and C. Wang and C. B. Wang and G. W. Wang and H. G. Wang and H. H. Wang and J. C. Wang and K. Wang and L. P. Wang and L. Y. Wang and P. H. Wang and R. Wang and W. Wang and X. G. Wang and X. Y. Wang and Y. Wang and Y. D. Wang and Y. J. 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 X. F. Wu and Y. S. Wu and S. Q. Xi and J. Xia and J. J. Xia and G. M. Xiang and D. X. Xiao and G. Xiao and G. G. Xin and Y. L. Xin and Y. Xing and Z. Xiong and D. L. Xu and R. F. Xu and R. X. Xu and W. L. Xu and L. Xue and D. H. Yan and J. Z. Yan and T. Yan and C. W. Yang and F. Yang and F. F. Yang and H. W. 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. Yue and H. D. Zeng and T. X. Zeng and W. Zeng and M. Zha and B. B. Zhang and F. Zhang and H. M. Zhang and H. Y. Zhang and J. L. Zhang and L. X. Zhang and Li Zhang and P. F. Zhang and P. P. Zhang and R. Zhang and S. B. Zhang and S. R. Zhang and S. S. Zhang and X. Zhang and X. P. Zhang and Y. F. 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 B. Zhou and H. Zhou and J. N. Zhou and M. 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:2310.17082},
year = {2023}
}
备注
11 pages, 3 figures, Accepted by the APJL