Diverse polarization angle swings from a repeating fast radio burst source

R. Luo, B. J. Wang, Y. P. Men, C. F. Zhang, J. C. Jiang, H. Xu, W. Y. Wang, K. J. Lee (), J. L. Han (), B. Zhang (), R. N. Caballero, M. Z. Chen, X. L. Chen, H. Q. Gan, Y. J. Guo, L. F. Hao, Y. X. Huang, P. Jiang, H. Li, J. Li, Z. X. Li, J. T. Luo, J. Pan, X. Pei, L. Qian, J. H. Sun, M. Wang, N. Wang, Z. G. Wen, R. X. Xu, Y. H. Xu, J. Yan, W. M. Yan, D. J. Yu, J. P. Yuan, S. B. Zhang and Y. Zhu
Additional contact information
R. Luo: Peking University
B. J. Wang: Peking University
Y. P. Men: Peking University
C. F. Zhang: Peking University
J. C. Jiang: Peking University
H. Xu: Peking University
W. Y. Wang: Chinese Academy of Sciences
K. J. Lee: Peking University
J. L. Han: Chinese Academy of Sciences
B. Zhang: University of Nevada
R. N. Caballero: Peking University
M. Z. Chen: Chinese Academy of Sciences
X. L. Chen: Chinese Academy of Sciences
H. Q. Gan: Chinese Academy of Sciences
Y. J. Guo: Peking University
L. F. Hao: Chinese Academy of Sciences
Y. X. Huang: Chinese Academy of Sciences
P. Jiang: Chinese Academy of Sciences
H. Li: Chinese Academy of Sciences
J. Li: Chinese Academy of Sciences
Z. X. Li: Chinese Academy of Sciences
J. T. Luo: Chinese Academy Of Sciences
J. Pan: Chinese Academy of Sciences
X. Pei: University of Chinese Academy of Sciences
L. Qian: Chinese Academy of Sciences
J. H. Sun: Chinese Academy of Sciences
M. Wang: Chinese Academy of Sciences
N. Wang: Chinese Academy of Sciences
Z. G. Wen: Chinese Academy of Sciences
R. X. Xu: Peking University
Y. H. Xu: Chinese Academy of Sciences
J. Yan: Chinese Academy of Sciences
W. M. Yan: Chinese Academy of Sciences
D. J. Yu: Chinese Academy of Sciences
J. P. Yuan: Chinese Academy of Sciences
S. B. Zhang: Australia Telescope National Facility
Y. Zhu: Chinese Academy of Sciences
Authors registered in the RePEc Author Service: Renfu Luo

Nature, 2020, vol. 586, issue 7831, 693-696

Abstract: Abstract Fast radio bursts (FRBs) are millisecond-duration radio transients1,2 of unknown origin. Two possible mechanisms that could generate extremely coherent emission from FRBs invoke neutron star magnetospheres3–5 or relativistic shocks far from the central energy source6–8. Detailed polarization observations may help us to understand the emission mechanism. However, the available FRB polarization data have been perplexing, because they show a host of polarimetric properties, including either a constant polarization angle during each burst for some repeaters9,10 or variable polarization angles in some other apparently one-off events11,12. Here we report observations of 15 bursts from FRB 180301 and find various polarization angle swings in seven of them. The diversity of the polarization angle features of these bursts is consistent with a magnetospheric origin of the radio emission, and disfavours the radiation models invoking relativistic shocks.

Date: 2020
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DOI: 10.1038/s41586-020-2827-2

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