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

作　　者：Yuhao Zhu Chenhui Niu Shi Dai Di Li Pei Wang Yi Feng Jingwen Wu Yongkun Zhang Xianghan Cui Junshuo Zhang Jinhuang Cao 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(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)

机构地区：[1]National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]Institute of Astrophysics,Central China Normal University,Wuhan 430079,China [4]Western Sydney University,Locked Bag 1797,Penrith South DC,NSW 2751,Australia [5]Department of Astronomy,Tsinghua University,Beijing 100084,China [6]Institute for Frontiers in Astronomy and Astrophysics,Beijing Normal University,Beijing 102206,China [7]Research Center for Astronomical Computing,Zhejiang Laboratory,Hangzhou 311100,China [8]Institute for Astronomy,School of Physics,Zhejiang University,Hangzhou 310027,China [9]International Centre for Radio Astronomy Research,Curtin Institute of Radio Astronomy,Perth 6102,Australia

出　　处：《Chinese Physics Letters》2024年第10期144-151,共8页中国物理快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11988101,12203069,12041302,and 12203045);the National SKA Program of China(Grant No.2022SKA0130100);the Office of the Leading Group for Cyberspace Affairs,CAS(Grant No.CAS-WX2023PY0102);the CAS Youth Interdisciplinary Team and the Foundation of Guizhou Provincial Education Department(Grant No.KY(2023)059);support from the National Natural Science Foundation of China(Grant Nos.11988101 and 12041303);the CAS Youth Interdisciplinary Team,the Youth Innovation Promotion Association CAS(Grant No.2021055);the Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS;supported by the National Natural Science Foundation of China(Grant No.12203045);the Leading Innovation and Entrepreneurship Team of Zhejiang Province of China(Grant No.2023R01008);the Key R&D Program of Zhejiang(Grant No.2024SSYS0012);supported by the China Scholarship Council(Grant No.202304910441)。

摘　　要：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 1.5–1.8GHz 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 understanding 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.

关 键 词：FAST NARROW BAND 

分 类 号：P161[天文地球—天文学]