强效重复性快闪射电波源的磁星模型能量危机
高能天体物理现象
2025-09-03 v2
摘要
快闪射电波 (FRB) 广泛认为源自磁星，其通过释放磁能来驱动爆炸。具有活跃重复性的 FRB 被观察到每小时可产生数百次爆炸，并可持续数月，因此可能为 FRB 中心发动机的能量预算提供严格约束。在 214 天的时间跨度内，我们检测到了来自高度活跃的 FRB 20240114A 的 11,553 次爆炸，峰值爆炸率达到 729 hr。这是来自任何单个 FRB 来源的最大爆炸样本，超过了迄今为止所有已知 FRB 总计的所有已发布爆炸次数。假设射电效率和束缝因子的典型值，该源估计的总各向同性爆炸能量超过了典型磁星的偶极磁能的 86%。该源释放的总能量约为其他已知重复器的 one and a half 数量级，给出磁星磁矩最严格的下限为 G cm。该源在该观测活动结束时仍保持活跃。因此，我们的发现要求 FRB 中心磁星发动机具有异常高的发射效率，或存在超过典型磁星的更强compact object。
引用
@article{arxiv.2507.14707,
title = {The magnetar model's energy crisis for a prolific repeating fast radio burst source},
author = {Jun-Shuo Zhang and Tian-Cong Wang and Pei Wang and Qin Wu and Di Li and Weiwei Zhu and Bing Zhang and He Gao and Ke-Jia Lee and Jinlin Han and Chao-Wei Tsai and Fayin Wang and Yong-Feng Huang and Yuan-Chuan Zou and Dengke Zhou and Wanjin Lu and Jintao Xie and Jianhua Fang and Jinhuang Cao and Chen-Chen Miao and Yuhao Zhu and Yunchuan Chen and Xiaofeng Cheng and Yinan Ke and Yong-Kun Zhang and Long-Xuan Zhang and Shuo Cao and Shiyan Tian and Zi-Wei Wu and Chunfeng Zhang and Jiarui Niu and Dejiang Zhou and Silu Xu and Bojun Wang and Huaxi Chen and Xiang-Lei Chen and Xianghan Cui and Yi Feng and Erbil Gügercinoğlu and Yu-Xiang Huang and Dongming Li and Dong-Zi Li and Ye Li and Lin Lin and Xiaohui Liu and Rui Luo and Jia-Wei Luo and Chen-Hui Niu and Qingyue Qu and Yuanhong Qu and Habtamu Menberu Tedila and Chengjie Wang and Wei-Yang Wang and Yabiao Wang and Yi-Dan Wang and Suming Weng and Yunsheng Wu and Heng Xu and Aiyuan Yang and Yuan-Pei Yang and Shihan Yew and Wenfei Yu and Lei Zhang and Rushuang Zhao},
journal= {arXiv preprint arXiv:2507.14707},
year = {2025}
}
备注
33 pages, 6 figures, the 1st of papers from the FAST FRB Key Science Project Collaboration on FRB 20240114A: Energy Budget Analysis, under review of Nature Astronomy