A repeating fast radio burst associated with a persistent radio source

C.-H. Niu, K. Aggarwal, D. Li (), X. Zhang, S. Chatterjee, C.-W. Tsai, W. Yu (), C. J. Law (), S. Burke-Spolaor, J. M. Cordes, Y.-K. Zhang, S. K. Ocker, J.-M. Yao, P. Wang, Y. Feng, Y. Niino, C. Bochenek, M. Cruces, L. Connor, J.-A. Jiang, S. Dai, R. Luo, G.-D. Li, C.-C. Miao, J.-R. Niu, R. Anna-Thomas, J. Sydnor, D. Stern, W.-Y. Wang, M. Yuan, Y.-L. Yue, D.-J. Zhou, Z. Yan, W.-W. Zhu and B. Zhang
Additional contact information
C.-H. Niu: National Astronomical Observatories, Chinese Academy of Sciences
K. Aggarwal: West Virginia University
D. Li: National Astronomical Observatories, Chinese Academy of Sciences
X. Zhang: University of Chinese Academy of Sciences
S. Chatterjee: Cornell University
C.-W. Tsai: National Astronomical Observatories, Chinese Academy of Sciences
W. Yu: Shanghai Astronomical Observatory, Chinese Academy of Sciences
C. J. Law: Cahill Center for Astronomy and Astrophysics, California Institute of Technology
S. Burke-Spolaor: West Virginia University
J. M. Cordes: Cornell University
Y.-K. Zhang: National Astronomical Observatories, Chinese Academy of Sciences
S. K. Ocker: Cornell University
J.-M. Yao: Xinjiang Astronomical Observatory, Chinese Academy of Sciences
P. Wang: National Astronomical Observatories, Chinese Academy of Sciences
Y. Feng: National Astronomical Observatories, Chinese Academy of Sciences
Y. Niino: The University of Tokyo
C. Bochenek: Cahill Center for Astronomy and Astrophysics, California Institute of Technology
M. Cruces: Max-Planck-Institut für Radioastronomie
L. Connor: Cahill Center for Astronomy and Astrophysics, California Institute of Technology
J.-A. Jiang: Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo
S. Dai: CSIRO Space and Astronomy
R. Luo: CSIRO Space and Astronomy
G.-D. Li: National Astronomical Observatories, Chinese Academy of Sciences
C.-C. Miao: National Astronomical Observatories, Chinese Academy of Sciences
J.-R. Niu: National Astronomical Observatories, Chinese Academy of Sciences
R. Anna-Thomas: West Virginia University
J. Sydnor: West Virginia University
D. Stern: Jet Propulsion Laboratory, California Institute of Technology
W.-Y. Wang: National Astronomical Observatories, Chinese Academy of Sciences
M. Yuan: National Astronomical Observatories, Chinese Academy of Sciences
Y.-L. Yue: National Astronomical Observatories, Chinese Academy of Sciences
D.-J. Zhou: National Astronomical Observatories, Chinese Academy of Sciences
Z. Yan: Shanghai Astronomical Observatory, Chinese Academy of Sciences
W.-W. Zhu: National Astronomical Observatories, Chinese Academy of Sciences
B. Zhang: University of Nevada, Las Vegas

Nature, 2022, vol. 606, issue 7916, 873-877

Abstract: Abstract The dispersive sweep of fast radio bursts (FRBs) has been used to probe the ionized baryon content of the intergalactic medium1, which is assumed to dominate the total extragalactic dispersion. Although the host-galaxy contributions to the dispersion measure appear to be small for most FRBs2, in at least one case there is evidence for an extreme magneto-ionic local environment3,4 and a compact persistent radio source5. 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 $${903}_{-111}^{+72}$$ 903 − 111 + 72 parsecs per cubic centimetre, which is nearly an order of magnitude higher than the average of FRB host galaxies2,6, far exceeds the dispersion-measure contribution of the intergalactic medium. Caution is thus warranted in inferring redshifts for FRBs without accurate host-galaxy identifications.

Date: 2022
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DOI: 10.1038/s41586-022-04755-5

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