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

朱禹豪 ¹牛晨辉 ²代实 ³李菂 ⁴王培 ⁵冯毅 ⁶吴京文 ⁷张永坤 ¹崔翔翰 ⁸张钧硕 ¹曹锦煌¹

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作者信息

1. National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China;University of Chinese Academy of Sciences,Beijing 100049,China
2. Institute of Astrophysics,Central China Normal University,Wuhan 430079,China
3. Western Sydney University,Locked Bag 1797,Penrith South DC,NSW 2751,Australia
4. Department of Astronomy,Tsinghua University,Beijing 100084,China;National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China
5. National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China;Institute for Frontiers in Astronomy and Astrophysics,Beijing Normal University,Beijing 102206,China
6. Research Center for Astronomical Computing,Zhejiang Laboratory,Hangzhou 311100,China;Institute for Astronomy,School of Physics,Zhejiang University,Hangzhou 310027,China
7. University of Chinese Academy of Sciences,Beijing 100049,China;National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China
8. National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China;University of Chinese Academy of Sciences,Beijing 100049,China;International Centre for Radio Astronomy Research,Curtin Institute of Radio Astronomy,Perth 6102,Australia
折叠

Abstract

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.

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基金项目

National Natural Science Foundation of China(11988101)

National Natural Science Foundation of China(12203069)

National Natural Science Foundation of China(12041302)

National Natural Science Foundation of China(12203045)

National SKA Program of China(2022SKA0130100)

Office of the Leading Group for Cyberspace Affairs,CAS(CAS-WX2023PY-0102)

CAS Youth Interdisciplinary Team and the Foundation of Guizhou Provincial Education Department(KY2023059)

National Natural Science Foundation of China(11988101)

National Natural Science Foundation of China(12041303)

CAS Youth Interdisciplinary Team()

Youth Innovation Promotion Association CAS(2021055)

Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS()

National Natural Science Foundation of China(12203045)

Leading Innovation and Entrepreneurship Team of Zhejiang Province of China(2023R01008)

Key R&D Program of Zhejiang(2024SSYS0012)

China Scholarship Council(202304910441)

出版年

2024

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)

CSTPCDCSCDEI

影响因子：0.515

ISSN：0256-307X

参考文献量53

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