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
Investigating FRB 20240114A with FAST: Morphological Classification and Drifting Rate Measurements in a Burst-cluster Framework

文献类型：期刊论文

作者Zhang, Long-Xuan34; Tian, Shiyan34; Shen, Junyi34; Zhang, Jun-Shuo32,33; Zhou, Dejiang33; Zhou, Lin34; Ma, Po34; Wang, Tian-Cong30,31; Zhou, Dengke29; Han, Jinlin28,32,33
刊名ASTROPHYSICAL JOURNAL
出版日期2026-02-20
卷号998期号:2页码:19
ISSN号0004-637X
DOI10.3847/1538-4357/ae314a
产权排序第18完成单位
通讯作者Zou, Yuan-Chuan(zouyc@hust.edu.cn)
文献子类Article
英文摘要This study investigates the morphological classification and drifting rate measurement of the repeating fast radio burst (FRB) source FRB 20240114A using the Five-hundred-meter Aperture Spherical Telescope. Detected on 2024 January 14, FRB 20240114A exhibited an exceptionally high burst rate, revealing unique properties. Through observational campaigns over several months, we selected a data set comprising 3203 bursts (2109 burst clusters) during a continuous monitoring session (15,780 s) on 2024 March 12. Improving upon previous work, we clarify the definitions of sub-bursts, bursts, and burst clusters. Using an average dispersion measures of 529.2 pc cm-3, we classified the burst clusters into Downward Drifting, Upward Drifting, No Drifting, No Evidence for Drifting, Not-Clear, and Complex burst clusters. Among the 978 burst clusters that exhibit drifting behavior, 233 (23.82%) show upward drifting. Additionally, if 142 upward-drifting single-component burst clusters are excluded, upward-drifting double- and multicomponent burst clusters still account for 10.89% of the 836 burst clusters exhibiting drifting behavior, equating to 91 burst clusters. Furthermore, if only upward-drifting burst clusters with consecutive time intervals (or upward-drifting bursts) are considered, only nine bursts remain. Drifting rate comparisons with other physical quantities reveal that the drifting rate increases with peak frequency for single-component burst clusters with drifting behavior. Moreover, in single-component burst clusters, those with upward drifting exhibit smaller effective widths, bandwidths, and fluxes than their downward-drifting counterparts. A Kolmogorov-Smirnov test further indicates that upward-drifting burst clusters possess longer consecutive time intervals than downward-drifting ones, suggesting distinct underlying physical mechanisms.
学科主题天文学 ; 射电天文学
URL标识查看原文
出版地No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND
WOS关键词FAST RADIO-BURSTS ; INVERSE COMPTON-SCATTERING ; TIME-FREQUENCY STRUCTURE ; EMISSION ; PULSAR ; TELESCOPE ; DISCOVERY ; BUNCHES ; SEARCH ; LOFAR
资助项目MOST divided by National Natural Science Foundation of China (NSFC)[12588202]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001691385100001
出版者IOP Publishing Ltd
资助机构MOST divided by National Natural Science Foundation of China (NSFC)[12588202]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28925]  
专题中国科学院云南天文台
通讯作者Zou, Yuan-Chuan
作者单位1.Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing, Guizhou Normal University, Guiyang 550001, People’s Republic of China
2.Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Hawthorn, VIC 3122, Australia;
3.Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, People’s Republic of China;
4.Laboratory for Laser Plasmas and Collaborative Innovation Centre of IFSA, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China;
5.National Key Laboratory of Dark Matter Physics, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China;
6.Institute of Astrophysics, Central China Normal University, Wuhan 430079, People’s Republic of China;
7.School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026, People’s Republic of China;
8.Department of Astronomy, University of Science and Technology of China, Hefei 230026, People’s Republic of China;
9.Department of Astrophysical Sciences, Princeton University, Princeton, NJ 89154, USA;
10.Institute for Astronomy, School of Physics, Zhejiang University, Hangzhou 310027, People’s Republic of China;
推荐引用方式
GB/T 7714		 Zhang, Long-Xuan,Tian, Shiyan,Shen, Junyi,et al. Investigating FRB 20240114A with FAST: Morphological Classification and Drifting Rate Measurements in a Burst-cluster Framework[J]. ASTROPHYSICAL JOURNAL,2026,998(2):19.
APA Zhang, Long-Xuan.,Tian, Shiyan.,Shen, Junyi.,Zhang, Jun-Shuo.,Zhou, Dejiang.,...&Zhao, Rushuang.(2026).Investigating FRB 20240114A with FAST: Morphological Classification and Drifting Rate Measurements in a Burst-cluster Framework.ASTROPHYSICAL JOURNAL,998(2),19.
MLA Zhang, Long-Xuan,et al."Investigating FRB 20240114A with FAST: Morphological Classification and Drifting Rate Measurements in a Burst-cluster Framework".ASTROPHYSICAL JOURNAL 998.2(2026):19.

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。