A fast radio burst associated with a Galactic magnetar.
Christopher D. Bochenek,Vikram Ravi,Konstantin Belov,Gregg Hallinan,Jonathon Kocz,Jonathon Kocz,Shri Kulkarni,D. McKenna +7 more
TLDR
A millisecond-duration radio burst from the Galactic magnetar SGR-1935+2154 with a fluence of 1.5 ± 0.3 megajansky milliseconds was detected by the STARE2 radio array in the 1,281-1,468 megahertz band.Abstract:
Since their discovery in 20071, much effort has been devoted to uncovering the sources of the extragalactic, millisecond-duration fast radio bursts (FRBs)2. A class of neutron stars known as magnetars is a leading candidate source of FRBs3,4. Magnetars have surface magnetic fields in excess of 1014 gauss, the decay of which powers a range of high-energy phenomena5. Here we report observations of a millisecond-duration radio burst from the Galactic magnetar SGR 1935+2154, with a fluence of 1.5 ± 0.3 megajansky milliseconds. This event, FRB 200428 (ST 200428A), was detected on 28 April 2020 by the STARE2 radio array6 in the 1,281–1,468 megahertz band. The isotropic-equivalent energy released in FRB 200428 is 4 × 103 times greater than that of any radio pulse from the Crab pulsar—previously the source of the brightest Galactic radio bursts observed on similar timescales7. FRB 200428 is just 30 times less energetic than the weakest extragalactic FRB observed so far8, and is drawn from the same population as the observed FRB sample. The coincidence of FRB 200428 with an X-ray burst9–11 favours emission models that describe synchrotron masers or electromagnetic pulses powered by magnetar bursts and giant flares3,4,12,13. The discovery of FRB 200428 implies that active magnetars such as SGR 1935+2154 can produce FRBs at extragalactic distances. Observations of the fast radio burst FRB 200428 coinciding with X-rays from the Galactic magnetar SGR 1935+2154 indicate that active magnetars can produce fast radio bursts at extragalactic distances.read more
Citations
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Journal ArticleDOI
A galactic fast radio burst finally reveals its origin
TL;DR: The first example of a fast radio burst detected in our galaxy came from a magnetized neutron star as discussed by the authors, which is known to be the first star to have a magnetic field.
Journal ArticleDOI
Inferring redshift and energy distributions of fast radio bursts from the first CHIME/FRB catalog
Li Tang,Hai-Nan Lin,Xin Li +2 more
TL;DR: In this paper , the authors reconstruct the extragalactic dispersion measure from well-localized fast radio bursts (FRBs) using Bayesian inference method and derive the redshift and energy of the first CHIME/FRB catalog.
Journal ArticleDOI
A commentary of “Consistency radio bursts in the Milky Way” in 10 remarkable discoveries from 2020 in Nature
TL;DR: The first detection and deep follow-up of a Galactic fast radio burst (FRB) phenomenon were reported in three papers published in the journal Nature in November 2020 as discussed by the authors , which is the first detection of a FRB with radiation other than radio waves, as well as the first of its kind in the Milky Way.
Journal ArticleDOI
The Game of Life on a Magnetar Crust: From Gamma-Ray Flares to FRBs
TL;DR: In this article , a model to unify the diverse range of magnetar activity, through the building and release of elastic stress from the crust, is presented. But the model is limited to the case of a single magnetar.
Journal ArticleDOI
Image plane detection of FRB121102 with the MeerKAT radio telescope
J. Andrianjafy,Nalini Heeralall-Issur,Avinash A. Deshpande,K. Golap,Patrick A. Woudt,M. Caleb,Ewan Barr,W. Chen,Fabian Jankowski,Manuel Kramer,Ben Stappers,J. W. D. O. Physics,University of Mauritius,Mauritius,R. R. Institute,Bangalore,Indian,Inter-University Centre for Astronomy,Astrophysics,Pune,Indian Institute of Technology,Kanpur,National Radio Astronomy Observatory,Socorro,USA.,D. Astronomy,U. C. Town,Rondebosch,South Africa,S. I. F. Astronomy,S. O. Physics,The University of Sydney,Sydney,Australia,Canberra,Max Planck Institut fur Radioastronomie,Bonn,German,J. B. C. F. Astrophysics,D. Physics,Astronomy,The University of Manchester,Manchester,Uk +43 more
TL;DR: In this paper , the authors presented the analysis of radio interferometric 2-s images from a MeerKAT observation of the repeating fast radio burst FRB121102 on September 2019.
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