中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 云南天文台
  3. 中国科学院云南天文台
GECAM discovery of a peculiar magnetar X-ray burst (MXB 221120) from SGR J1935+2154 associated with a fast radio burst

文献类型：期刊论文

作者Tan, Wen-Jun2,3; Wang, Yue2,3; Wang, Chen-Wei2,3; Xiong, Shao-Lin2; Li, Xiao-Bo2; Zhang, Shuang-Nan2,3; Cai, Ce4; Xue, Wang-Chen2,3; Zhang, Peng2,5; Wu, Bo-Bing2
刊名ASTRONOMY & ASTROPHYSICS
出版日期2026-03-11
卷号707
关键词X-rays: bursts
ISSN号0004-6361
DOI10.1051/0004-6361/202658841
产权排序第6完成单位
文献子类Article
英文摘要Fast radio bursts (FRBs) are enigmatic cosmic transients of millisecond duration observed in the radio band. The identification of FRB-associated magnetar X-ray bursts (MXBs) from the galactic magnetar SGR J1935+2154 suggests that at least a fraction of FRBs can be produced from magnetar activity. However, the sample size of FRB-associated MXBs is still very small. Here we report a bright and peculiar FRB-associated MXB from SGR J1935+2154 detected by GECAM on November 20, 2022, dubbed MXB 221120. We find that the temporal and spectral properties of MXB 221120 exhibit distinctive features. Its light curve could generally be described by a single FRED function with the superposition of several narrow pulses. Interestingly, we identified a possible quasiperiodic oscillation feature with a center frequency of similar to 18 Hz in this MXB. The time-integrated spectrum is best fit by a blackbody model with a temperature (kT) of 18.6 keV, rendering it the first thermal spectrum FRB-associated MXB from SGR J1935+2154. Compared to other MXBs with a single emission episode, MXB 221120 has a longer duration and a higher blackbody temperature, making it an outlier in the burst sample. These results indicate that MXB 221120 may have been produced by a special mechanism with extreme physical conditions.
学科主题天文学 ; 射电天文学
URL标识查看原文
出版地17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
WOS关键词SOFT GAMMA-REPEATERS ; MULTI-INSTRUMENT ETJASMIN ; JOINT ANALYSIS SYSTEM ; NEUTRON-STARS ; PERSISTENT EMISSION ; ACTIVE EPISODE ; FRB 200428 ; TRANSIENTS ; PULSAR ; OSCILLATIONS
资助项目National Key R&D Program of China[2021YFA0718500]; National Natural Science Foundation of China[12273042]; National Natural Science Foundation of China[12494572]; National Natural Science Foundation of China[12373047]; National Natural Science Foundation of China[12333007]; China's Space Origins Exploration Program; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA30050000]; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0550300]; Science Research Project of Hebei Education Department[BJ2026091]; Strategic Priority Research Program on Space Science[XDA15360000]; Chinese Academy of Sciences
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001711061700001
出版者EDP SCIENCES S A
资助机构National Key R&D Program of China[2021YFA0718500] ; National Natural Science Foundation of China[12273042, 12494572, 12373047, 12333007] ; China's Space Origins Exploration Program ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA30050000, XDB0550300] ; Science Research Project of Hebei Education Department[BJ2026091] ; Strategic Priority Research Program on Space Science[XDA15360000] ; Chinese Academy of Sciences
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/29042]  
专题中国科学院云南天文台
通讯作者Xiong, Shao-Lin
作者单位1.Key Laboratory of Lithium Battery New Energy Materials and Devices of Jiangxi Education Department, College of Intelligent Manufacturing and Materials & Chemical Engineering, Yichun University, Yichun, Jiangxi Province 336000, China;
2.State Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;
3.University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China;
4.College of Physics and Hebei Key Laboratory of Photophysics Research and Application, Hebei Normal University, Shijiazhuang Hebei 050024, China;
5.College of Electronic and Information Engineering, Tongji University, Shanghai 201804, China;
6.Department of Nuclear Science and Technology, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China;
7.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China;
8.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China;
9.Department of Astronomy, Peking University, Beijing 100871, China;
10.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China;
推荐引用方式
GB/T 7714		 Tan, Wen-Jun,Wang, Yue,Wang, Chen-Wei,et al. GECAM discovery of a peculiar magnetar X-ray burst (MXB 221120) from SGR J1935+2154 associated with a fast radio burst[J]. ASTRONOMY & ASTROPHYSICS,2026,707.
APA Tan, Wen-Jun.,Wang, Yue.,Wang, Chen-Wei.,Xiong, Shao-Lin.,Li, Xiao-Bo.,...&Zheng, Shi-Jie.(2026).GECAM discovery of a peculiar magnetar X-ray burst (MXB 221120) from SGR J1935+2154 associated with a fast radio burst.ASTRONOMY & ASTROPHYSICS,707.
MLA Tan, Wen-Jun,et al."GECAM discovery of a peculiar magnetar X-ray burst (MXB 221120) from SGR J1935+2154 associated with a fast radio burst".ASTRONOMY & ASTROPHYSICS 707(2026).

入库方式： OAI收割

来源：云南天文台

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。