原始宇宙射线在肩部以下的电荷相关谱软化
高能天体物理现象
2026-05-01 v3 高能物理 - 实验
摘要
在大多数粒子加速或扩散理论中，由于加速限制或扩散阶段的变化，宇宙射线谱的特征特征与电荷数相关。或者，交互场景则预期在一般情况下呈现出质量相关的谱特征。由于测量至非常高能量级单个粒子谱的困难，验证哪种关系在自然界中发挥作用仍然缺乏观测数据。本文报告了由暗物质探测器（Dark Matter Particle Explorer）收集的9年在轨数据，对碳、氧和铁谱的直接测量——能量范围为约20吉瓦至100太瓦（铁为约60太瓦）。首次直接检测到这些谱中存在明显的谱软化。结合更新的质子和氦谱，谱软化在约15太瓦刚性处普遍出现。在置信水平超过99.999%的统计显著性下，拒绝了核质量相关软化。本文讨论了可能的解释，包括 nearby 宇宙射线源以及扩散效应等模型。
引用
@article{arxiv.2511.05409,
title = {Charge-dependent spectral softenings of primary cosmic-rays below the knee},
author = {DAMPE Collaboration and Francesca Alemanno and Qi An and Philipp Azzarello and Felicia-Carla-Tiziana Barbato and Paolo Bernardini and Xiao-Jun Bi and Hugo Valentin Boutin and Irene Cagnoli and Ming-Sheng Cai and Elisabetta Casilli and Jin Chang and Deng-Yi Chen and Jun-Ling Chen and Zhan-Fang Chen and Zi-Xuan Chen and Paul Coppin and Ming-Yang Cui and Tian-Shu Cui and Ivan De Mitri and Francesco de Palma and Adriano Di Giovanni and Tie-Kuang Dong and Zhen-Xing Dong and Giacinto Donvito and Jing-Lai Duan and Kai-Kai Duan and Rui-Rui Fan and Yi-Zhong Fan and Fang Fang and Kun Fang and Chang-Qing Feng and Lei Feng and Sara Fogliacco and Jennifer-Maria Frieden and Piergiorgio Fusco and Min Gao and Fabio Gargano and Essna Ghose and Ke Gong and Yi-Zhong Gong and Dong-Ya Guo and Jian-Hua Guo and Shuang-Xue Han and Yi-Ming Hu and Guang-Shun Huang and Xiao-Yuan Huang and Yong-Yi Huang and Maria Ionica and Lu-Yao Jiang and Wei Jiang and Yao-Zu Jiang and Jie Kong and Andrii Kotenko and Dimitrios Kyratzis and Shi-Jun Lei and Bo Li and Manbing Li and Wei-Liang Li and Wen-Hao Li and Xiang Li and Xian-Qiang Li and Yao-Ming Liang and Cheng-Ming Liu and Hao Liu and Jie Liu and Shu-Bin Liu and Yang Liu and Francesco Loparco and Miao Ma and Peng-Xiong Ma and Tao Ma and Xiao-Yong Ma and Giovanni Marsella and Mario-Nicola Mazziotta and Dan Mo and Yu Nie and Xiao-Yang Niu and Andrea Parenti and Wen-Xi Peng and Xiao-Yan Peng and Chiara Perrina and Enzo Putti-Garcia and Rui Qiao and Jia-Ning Rao and Yi Rong and Andrea Serpolla and Ritabrata Sarkar and Pierpaolo Savina and Zhi Shangguan and Wei-Hua Shen and Zhao-Qiang Shen and Zhong-Tao Shen and Leandro Silveri and Jing-Xing Song and Hong Su and Meng Su and Hao-Ran Sun and Zhi-Yu Sun and Antonio Surdo and Xue-Jian Teng and Andrii Tykhonov and Gui-Fu Wang and Jin-Zhou Wang and Lian-Guo Wang and Shen Wang and Xiao-Lian Wang and Yan-Fang Wang and Da-Ming Wei and Jia-Ju Wei and Yi-Feng Wei and Di Wu and Jian Wu and Sha-Sha Wu and Xin Wu and Zi-Qing Xia and Zheng Xiong and En-Heng Xu and Hai-Tao Xu and Jing Xu and Zhi-Hui Xu and Zi-Zong Xu and Zun-Lei Xu and Guo-Feng Xue and Ming-Yu Yan and Hai-Bo Yang and Peng Yang and Ya-Qing Yang and Hui-Jun Yao and Yu-Hong Yu and Qiang Yuan and Chuan Yue and Jing-Jing Zang and Sheng-Xia Zhang and Wen-Zhang Zhang and Yan Zhang and Ya-Peng Zhang and Yi Zhang and Yong-Jie Zhang and Yong-Qiang Zhang and Yun-Long Zhang and Zhe Zhang and Zhi-Yong Zhang and Cong Zhao and Hong-Yun Zhao and Xun-Feng Zhao and Chang-Yi Zhou and Xun Zhu and Yan Zhu},
journal= {arXiv preprint arXiv:2511.05409},
year = {2026}
}
备注
36 pages, 8 figures, published online in Nature