首页|A Narrowband Burst from FRB 20190520B Simultaneously Observed by FAST and Parkes

A Narrowband Burst from FRB 20190520B Simultaneously Observed by FAST and Parkes

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Fast radio bursts(FRBs)are short-duration radio transients with mysterious origins.Since their uncertainty,there are very few FRBs observed by different instruments simultaneously.This study presents a detailed analysis of a burst from FRB 20190520B observed by FAST and Parkes at the same time.The spectrum of this individual burst ended at the upper limit of the FAST frequency band and was simultaneously detected by the Parkes telescope in the 1.5-1.8 GHz range.By employing spectral energy distribution(SED)and spectral sharpness methods,we confirmed the presence of narrow-band radiation in FRB 20190520B,which is crucial for under-standing its radiation mechanisms.Our findings support the narrow-band characteristics that most repeaters exhibit.This work also highlights the necessity of continued multiband observations to explore its periodicity and frequency-dependent properties,contributing to an in-depth understanding of FRB phenomena.

朱禹豪、牛晨辉、代实、李菂、王培、冯毅、吴京文、张永坤、崔翔翰、张钧硕、曹锦煌

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National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China

University of Chinese Academy of Sciences,Beijing 100049,China

Institute of Astrophysics,Central China Normal University,Wuhan 430079,China

Western Sydney University,Locked Bag 1797,Penrith South DC,NSW 2751,Australia

Department of Astronomy,Tsinghua University,Beijing 100084,China

Institute for Frontiers in Astronomy and Astrophysics,Beijing Normal University,Beijing 102206,China

Research Center for Astronomical Computing,Zhejiang Laboratory,Hangzhou 311100,China

Institute for Astronomy,School of Physics,Zhejiang University,Hangzhou 310027,China

International Centre for Radio Astronomy Research,Curtin Institute of Radio Astronomy,Perth 6102,Australia

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational SKA Program of ChinaOffice of the Leading Group for Cyberspace Affairs,CASCAS Youth Interdisciplinary Team and the Foundation of Guizhou Provincial Education DepartmentNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaCAS Youth Interdisciplinary TeamYouth Innovation Promotion Association CASCultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CASNational Natural Science Foundation of ChinaLeading Innovation and Entrepreneurship Team of Zhejiang Province of ChinaKey R&D Program of ZhejiangChina Scholarship Council

119881011220306912041302122030452022SKA0130100CAS-WX2023PY-0102KY202305911988101120413032021055122030452023R010082024SSYS0012202304910441

2024

10.1088/0256-307X/41/10/109501

中国物理快报(英文版)
中国科学院物理研究所,中国物理学会

中国物理快报(英文版)

CSTPCDEI
影响因子：0.515
ISSN：0256-307X
年,卷(期)：2024.41(10)