Extreme Magneto-ionic Environment of Actively Repeating FRB 20190520B

Li, Di Li Di

doi:10.11922/sciencedb.o00069.00007

Cited by 1 publication

(2 citation statements)

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“…Data and materials availability: The data for each of the Parkes bursts are available at Science Data Bank ( 38 ), and data for the GBT bursts are available at Zenodo ( 39 ). The software and notebooks we used for the polarization analysis are available at https://github.com/ReshmaAnnaThomas/FRB20190520B and https://github.com/SukiYume/RMS and archived at Zenodo ( 40 , 41 ).…”

Section: Acknowledgmentsmentioning

confidence: 99%

“…The Green Bank Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities. Data and materials availability: The data for each of the Parkes bursts are available at Science Data Bank (38), and data for the GBT bursts are available at Zenodo (39). The software and notebooks we used for the polarization analysis are available at https://github.…”

Section: Acknowledgmentsmentioning

confidence: 99%

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Magnetic field reversal in the turbulent environment around a repeating fast radio burst

Anna-Thomas

Connor

Dai

et al. 2023

Science

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Fast radio bursts (FRBs) are brief, intense flashes of radio waves from unidentified extragalactic sources. Polarized FRBs originate in highly magnetized environments. We report observations of the repeating FRB 20190520B spanning 17 months, which show that the FRB’s Faraday rotation is highly variable and twice changes sign. The FRB also depolarizes below radio frequencies of about 1 to 3 gigahertz. We interpret these properties as being due to changes in the parallel component of the magnetic field integrated along the line of sight, including reversing direction of the field. This could result from propagation through a turbulent magnetized screen of plasma, located 10 –5 to 100 parsecs from the FRB source. This is consistent with the bursts passing through the stellar wind of a binary companion of the FRB source.

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Section: Acknowledgmentsmentioning

confidence: 99%

Section: Acknowledgmentsmentioning

confidence: 99%