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
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Journal ArticleDOI
快速射电暴脉冲研究进入高统计性时代
Jiaying Xu,Dingzhong Li +1 more
TL;DR: In this paper , the burst energy distribution of fast radio bursts (FRBs) is recovered and is found to be bimodal, suggesting that there may be more than one emission mechanisms or emission sites or beam shapes.
Journal ArticleDOI
The Northern Cross Fast Radio Burst project. III. The FRB-magnetar connection in a sample of nearby galaxies
D. Pelliciari,Gianni Bernardi,M. Pilia,Giovanni Naldi,Giuseppe Pupillo,Matteo Trudu,A. Addis,Germano Bianchi,Claudio Bortolotti,Daniele Dallacasa,Roberto Lulli,A. Maccaferri,Alessio Magro,A. Mattana,Federico Perini,Mauro Roma,M. Schiaffino,Giancarlo Setti,Marco Tavani,F. Verrecchia,C. Casentini +20 more
TL;DR: In this article , the authors investigated how prevalent magnetars such as SGR J1935+2154 are within FRB progenitors and provided the first constraints on the expected rate of FRBs hypothetically originating from ultraluminous X-ray sources, since some of the galaxies observed during their observational campaign host confirmed ULXs.
Journal ArticleDOI
Neutron Tunneling: A New Mechanism to Power Explosive Phenomena in Neutron Stars, Magnetars, and Neutron Star Mergers
Carlos A. Bertulani,R. V. Lobato +1 more
TL;DR: In this paper, the role of nuclear binding, the two-body interaction and pairing on the neutron diffusion times is investigated, and the impact of diffusion in three-dimensions.
Journal ArticleDOI
Bursts before Burst: A Comparative Study on FRB 200428-associated and FRB-absent X-ray Bursts from SGR J1935+2154
Yu-Han Yang,Bin-Bin Zhang,Lin Lin,Bing Zhang,G. Q. Zhang,Yi Si Yang,Zuo Lin Tu,Jin Hang Zou,Hao Yang Ye,Fa-Yin Wang,Z. G. Dai +10 more
TL;DR: In this article, the authors compare the spectral properties of the FRB-associated X-ray burst with the magnetar bursts. And they find a similarity between the two, offering indirect support of the magnetor origin of cosmological FRBs.
Journal ArticleDOI
FRB$-$SRB$-$XRB: Geometric and Relativistic Beaming Constraints of Fast Radio Bursts from the Galactic Magnetar SGR J1935+2154
Connery J. Chen,Bing Zhang +1 more
TL;DR: In this paper , the authors derived the geometric and relativistic beaming factors of fast radio burst (FRB) and slow radio bursts (SRB) associated with X-ray burst (XRB) from the Galactic magnetar soft gamma repeater (SGR) SGR J1935+2154.
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