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2020

Detection of two bright radio bursts from magnetar SGR 1935+2154

Kirsten, F., Snelders, M., Jenkins, M. et al.

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Fast radio bursts (FRBs) are millisecond-duration, bright radio signals (fluence $\mathrm{0.1 - 100\,Jy\,ms}$) emitted from extragalactic sources of unknown physical origin.

The recent CHIME/FRB and STARE2 detection of an extremely bright (fluence $\sim$MJy$\,$ms) radio burst from the Galactic magnetar SGR~1935$+$2154 supports the hypothesis that (at least some) FRBs are emitted by magnetars at cosmological distances.
In follow-up observations totalling 522.7$\,$hrs on source, we detect two bright radio bursts with fluences of $112\pm22\mathrm{\,Jy\,ms}$ and $24\pm5\mathrm{\,Jy\,ms}$, respectively.
Both bursts appear affected by interstellar scattering and we measure significant linear and circular polarisation for the fainter burst.

Detection of two bright radio bursts from magnetar SGR 1935+2154 · Around

Built on

Simultaneous X-Ray, Gamma-Ray, and Radio Observations of the Repeating Fast Radio Burst FRB 121102
Scholz, P. et al · 2017
Earlier work this paper cites.
The CHIME Fast Radio Burst Project: System Overview
CHIME/FRB Collaboration et al · 2018
Earlier work this paper cites.
A living theory catalogue for fast radio bursts
Platts, E. et al · 2019
Earlier work this paper cites.
The Multiwavelength Counterparts of Fast Radio Bursts
Chen, G., Ravi, V. & Lu, W · 2020
Earlier work this paper cites.

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A repeating fast radio burst source localized to a nearby spiral galaxy
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A bright millisecond-duration radio burst from a Galactic magnetar
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CHIME/FRB Collaboration et al · 2020
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A fast radio burst associated with a Galactic magnetar
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Bochenek, C. D. et al · 2020
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STARE2: Detecting Fast Radio Bursts in the Milky Way
Bochenek, C. D. et al · 2020
Cited alongside, same era.

Then

A peculiar hard X-ray counterpart of a Galactic fast radio burst
Original
Ridnaia, A. et al · 2020
Closest in time.
INTEGRAL discovery of a burst with associated radio emission from the magnetar SGR 1935+2154
Original
Mereghetti, S. et al · 2020
Closest in time.
AGILE detection of a hard X-ray burst in temporal coincidence with a radio burst from SGR 1935+2154
Tavani, M. et al · 2020
Closest in time.
Identification of a non-thermal X-ray burst with the Galactic magnetar SGR 1935+2154 and a fast radio burst with Insight-HXMT
Original
Li, C. K. et al · 2020
Closest in time.

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