在最高能伽马射线中观测到的潜在 PeVatron 超新星遗迹 G106.3+2.7
高能天体物理现象
2021-09-08 v1
摘要
宇宙射线（质子和其他原子核）被认为在银河系内称为“PeVatron”的天体物理粒子加速器中被加速到拍电子伏（PeV）及以上的能量。尽管 PeVatron 的特征标志预期为延伸至 100 太电子伏（TeV）以上且无截断的硬伽马射线能谱，但由于加速宇宙射线的最大能量较低或探测器在 100 TeV 附近灵敏度不足，目前已知的源中无一展现出这样的能谱。本文报道了对超新星遗迹 G106.3+2.7 在 10 TeV 以上伽马射线辐射的观测。该工作提供了直至并超过 100 TeV 的流量数据点，并表明 10 TeV 以上的甚高能伽马射线辐射与分子云而非脉冲星 PSR J2229+6114 密切相关。关于 G106.3+2.7 的伽马射线辐射机制，这一形态学特征似乎支持由加速相对论性质子引起的强子起源（通过 {\pi}0 衰变）优于由相对论性电子通过逆康普顿散射引起的轻子起源。此外，我们指出，对同步辐射能谱的 X 射线流量上限将为确证强子情景作为该源粒子加速机制提供重要信息。
引用
@article{arxiv.2109.02898,
title = {Potential PeVatron supernova remnant G106.3+2.7 seen in the highest-energy gamma rays},
author = {M. Amenomori and Y. W. Bao and X. J. Bi and D. Chen and T. L. Chen and W. Y. Chen and Xu Chen and Y. Chen and Cirennima and S. W. Cui and Danzengluobu and L. K. Ding and J. H. Fang and K. Fang and C. F. Feng and Zhaoyang Feng and Z. Y. Feng and Qi Gao and Q. B. Gou and Y. Q. Guo and Y. Y. Guo and H. H. He and Z. T. He and K. Hibino and N. Hotta and Haibing Hu and H. B. Hu and J. Huang and H. Y. Jia and L. Jiang and H. B. Jin and K. Kasahara and Y. Katayose and C. Kato and S. Kato and K. Kawata and W. Kihara and Y. Ko and M. Kozai and Labaciren and G. M. Le and A. F. Li and H. J. Li and W. J. Li and Y. H. Lin and B. Liu and C. Liu and J. S. Liu and M. Y. Liu and W. Liu and Y. -Q. Lou and H. Lu and X. R. Meng and K. Munakata and H. Nakada and Y. Nakamura and H. Nanjo and M. Nishizawa and M. Ohnishi and T. Ohura and S. Ozawa and X. L. Qian and X. B. Qu and T. Saito and M. Sakata and T. K. Sako and J. Shao and M. Shibata and A. Shiomi and H. Sugimoto and W. Takano and M. Takita and Y. H. Tan and N. Tateyama and S. Torii and H. Tsuchiya and S. Udo and H. Wang and H. R. Wu and L. Xue and Y. Yamamoto and Z. Yang and Y. Yokoe and A. F. Yuan and L. M. Zhai and H. M. Zhang and J. L. Zhang and X. Zhang and X. Y. Zhang and Y. Zhang and Yi Zhang and Ying Zhang and S. P. Zhao and Zhaxisangzhu and X. X. Zhou},
journal= {arXiv preprint arXiv:2109.02898},
year = {2021}
}
备注
Published in Nature Astronomy