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A repeating fast radio burst associated with a persistent radio source

by Zhang, Y.-K. , Yao, J.-M. , Wang, P. , Yu, W. , Miao, C.-C. , Niu, J.-R. , Luo, R. , Zhu, W.-W. , Cordes, J. M. , Wang, W.-Y. , Niino, Y. , Dai, S. , Zhang, B. , Tsai, C.-W. , Sydnor, J. , Feng, Y. , Connor, L. , Bochenek, C. , Chatterjee, S. , Cruces, M. , Stern, D. , Li, G.-D. , Zhang, X. , Zhou, D.-J. , Anna-Thomas, R. , Yue, Y.-L. , Niu, C.-H. , Yuan, M. , Aggarwal, K. , Jiang, J.-A. , Li, D. , Burke-Spolaor, S. , Law, C. J. , Yan, Z. , Ocker, S. K.

in 639/33/34/4127 / 639/33/34/864 / Dispersion / Dwarf galaxies / Galaxies / Humanities and Social Sciences / Intergalactic media / Localization / multidisciplinary / Radio bursts / Radio sources (astronomy) / Red shift / Science / Science (multidisciplinary) / Spectrum analysis / Star formation / Stars & galaxies / Telescopes

2022

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A repeating fast radio burst associated with a persistent radio source

2022

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2022

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Journal Article

A repeating fast radio burst associated with a persistent radio source

Zhang, Y.-K.,

Yao, J.-M.,

Wang, P.,

Yu, W.,

Miao, C.-C.,

Niu, J.-R.,

Luo, R.,

Zhu, W.-W.,

Cordes, J. M.,

Wang, W.-Y.,

Niino, Y.,

Dai, S.,

Zhang, B.,

Tsai, C.-W.,

Sydnor, J.,

Feng, Y.,

Connor, L.,

Bochenek, C.,

Chatterjee, S.,

Cruces, M.,

Stern, D.,

Li, G.-D.,

Zhang, X.,

Zhou, D.-J.,

Anna-Thomas, R.,

Yue, Y.-L.,

Niu, C.-H.,

Yuan, M.,

Aggarwal, K.,

Jiang, J.-A.,

Li, D.,

Burke-Spolaor, S.,

Law, C. J.,

Yan, Z.,

Ocker, S. K.

2022

Overview

The dispersive sweep of fast radio bursts (FRBs) has been used to probe the ionized baryon content of the intergalactic medium 1 , which is assumed to dominate the total extragalactic dispersion. Although the host-galaxy contributions to the dispersion measure appear to be small for most FRBs 2 , in at least one case there is evidence for an extreme magneto-ionic local environment 3 , 4 and a compact persistent radio source 5 . Here we report the detection and localization of the repeating FRB 20190520B, which is co-located with a compact, persistent radio source and associated with a dwarf host galaxy of high specific-star-formation rate at a redshift of 0.241 ± 0.001. The estimated host-galaxy dispersion measure of approximately 903 − 111 + 72 parsecs per cubic centimetre, which is nearly an order of magnitude higher than the average of FRB host galaxies 2 , 6 , far exceeds the dispersion-measure contribution of the intergalactic medium. Caution is thus warranted in inferring redshifts for FRBs without accurate host-galaxy identifications. A repeating fast radio burst co-located with a persistent radio source and associated with a dwarf host galaxy of a high star-formation rate has been detected.

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Publisher

Nature Publishing Group UK,Nature Publishing Group

Subject

/ Humanities and Social Sciences

/ Intergalactic media