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

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

Chin. Phys. Lett.

2024, Vol. 41

Issue (10): 109501 DOI: 10.1088/0256-307X/41/10/109501

GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS

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

Yuhao Zhu^1,2, Chenhui Niu^3*, Shi Dai⁴, Di Li^5,1*, Pei Wang^1,6, Yi Feng^7,8, Jingwen Wu^2,1, Yongkun Zhang^1,2, Xianghan Cui^1,2,9, Junshuo Zhang^1,2, and Jinhuang Cao^1,2

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

Cite this article:

Yuhao Zhu, Chenhui Niu, Shi Dai et al 2024 Chin. Phys. Lett. 41 109501

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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 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.

Received: 01 July 2024 Published: 11 October 2024

PACS:	95.85.-e	(Astronomical observations (additional primary heading(s) must be chosen with these entries to represent the astronomical objects and/or properties studied))
	95.85.Bh	(Radio, microwave (>1 mm))
	95.55.Jz	(Radio telescopes and instrumentation; heterodyne receivers)
	95.30.Gv	(Radiation mechanisms; polarization)

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https://cpl.iphy.ac.cn/10.1088/0256-307X/41/10/109501 OR https://cpl.iphy.ac.cn/Y2024/V41/I10/109501

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	Yuhao Zhu
	Chenhui Niu
	Shi Dai
	Di Li
	Pei Wang
	Yi Feng
	Jingwen Wu
	Yongkun Zhang
	Xianghan Cui
	Junshuo Zhang
	and Jinhuang Cao

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