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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Quark-Novae in the outskirts of galaxies: an explanation of the fast radio burst phenomenon
TL;DR: In this paper, it was shown that old isolated neutron stars in groups and clusters of galaxies experiencing a Quark-Nova phase (QN: an explosive transition to a quark star) may be the sources of FRBs.
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AT2020hur: A Possible Optical Counterpart of FRB 180916B
TL;DR: In this article , an unclassified optical transient named AT2020hur (α = 01h58m00.ˢ750 ± 1″, δ=65°43′00.″30±1″ ) was found to be spatially coincident with the repeating FRB 180916B.
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What It Takes to Measure Reionization with Fast Radio Bursts
TL;DR: In this paper , the authors apply a model-independent approach to measure reionization from synthetic FRB data assuming these signals are detected beyond redshift 5, and obtain state-of-the-art results.
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Distinguishing time clustering of astrophysical bursts
TL;DR: In this paper, the authors focus on distinguishing periodic windowed behavior from merely clustered events through time clustering analysis, using techniques analogous to spatial clustering, demonstrating methods for identifying and characterizing the behavior.
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One of Everything: The Breakthrough Listen Exotica Catalog
Brian Lacki,Bryan Brzycki,Steve Croft,Steve Croft,Daniel Czech,David DeBoer,Julia DeMarines,Vishal Gajjar,Howard Isaacson,Howard Isaacson,Matt Lebofsky,David MacMahon,Danny C. Price,Danny C. Price,Sofia Z. Sheikh,Andrew P. V. Siemion,Jamie Drew,S. Pete Worden +17 more
TL;DR: The Breakthrough Listen's Exotica catalog as mentioned in this paper is a collection of 737 distinct targets intended to include "one of everything" in astronomy, including objects with the most extreme properties.
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