Since their discovery in 2007, much effort has been devoted to uncovering the
sources of the extragalactic, millisecond-duration fast radio bursts (FRBs). A
class of neutron star known as magnetars is a leading candidate source of FRBs.
Magnetars have surface magnetic fields in excess of $10^14$ G, the decay of
which powers a range of high-energy phenomena. Here we present the discovery of
a millisecond-duration radio burst from the Galactic magnetar SGR 1935+2154,
with a fluence of $1.50.3$ Mega-Jansky milliseconds. This event, termed ST
200428A(=FRB 200428), was detected on 28 April 2020 by the STARE2 radio array
in the 1281--1468\,MHz band. The isotropic-equivalent energy released in ST
200428A is $4\times10^3$ times greater than in any Galactic radio burst
previously observed on similar timescales. ST 200428A is just 40 times less
energetic than the weakest extragalactic FRB observed to date, and is arguably
drawn from the same population as the observed FRB sample. The coincidence of
ST 200428A with an X-ray burst favours emission models developed for FRBs that
describe synchrotron masers or electromagnetic pulses powered by magnetar
bursts and giant flares. The discovery of ST 200428A implies that active
magnetars like SGR 1935+2154 can produce FRBs at extragalactic distances. The
high volumetric rate of events like ST 200428A motivates dedicated searches for
similar bursts from nearby galaxies.
Описание
A fast radio burst associated with a Galactic magnetar
%0 Generic
%1 bochenek2020radio
%A Bochenek, Christopher D.
%A Ravi, Vikram
%A Belov, Konstantin V.
%A Hallinan, Gregg
%A Kocz, Jonathon
%A Kulkarni, Shri R.
%A McKenna, Dan L.
%D 2020
%K tifr
%T A fast radio burst associated with a Galactic magnetar
%U http://arxiv.org/abs/2005.10828
%X Since their discovery in 2007, much effort has been devoted to uncovering the
sources of the extragalactic, millisecond-duration fast radio bursts (FRBs). A
class of neutron star known as magnetars is a leading candidate source of FRBs.
Magnetars have surface magnetic fields in excess of $10^14$ G, the decay of
which powers a range of high-energy phenomena. Here we present the discovery of
a millisecond-duration radio burst from the Galactic magnetar SGR 1935+2154,
with a fluence of $1.50.3$ Mega-Jansky milliseconds. This event, termed ST
200428A(=FRB 200428), was detected on 28 April 2020 by the STARE2 radio array
in the 1281--1468\,MHz band. The isotropic-equivalent energy released in ST
200428A is $4\times10^3$ times greater than in any Galactic radio burst
previously observed on similar timescales. ST 200428A is just 40 times less
energetic than the weakest extragalactic FRB observed to date, and is arguably
drawn from the same population as the observed FRB sample. The coincidence of
ST 200428A with an X-ray burst favours emission models developed for FRBs that
describe synchrotron masers or electromagnetic pulses powered by magnetar
bursts and giant flares. The discovery of ST 200428A implies that active
magnetars like SGR 1935+2154 can produce FRBs at extragalactic distances. The
high volumetric rate of events like ST 200428A motivates dedicated searches for
similar bursts from nearby galaxies.
@misc{bochenek2020radio,
abstract = {Since their discovery in 2007, much effort has been devoted to uncovering the
sources of the extragalactic, millisecond-duration fast radio bursts (FRBs). A
class of neutron star known as magnetars is a leading candidate source of FRBs.
Magnetars have surface magnetic fields in excess of $10^{14}$ G, the decay of
which powers a range of high-energy phenomena. Here we present the discovery of
a millisecond-duration radio burst from the Galactic magnetar SGR 1935+2154,
with a fluence of $1.5\pm 0.3$ Mega-Jansky milliseconds. This event, termed ST
200428A(=FRB 200428), was detected on 28 April 2020 by the STARE2 radio array
in the 1281--1468\,MHz band. The isotropic-equivalent energy released in ST
200428A is $4\times10^{3}$ times greater than in any Galactic radio burst
previously observed on similar timescales. ST 200428A is just 40 times less
energetic than the weakest extragalactic FRB observed to date, and is arguably
drawn from the same population as the observed FRB sample. The coincidence of
ST 200428A with an X-ray burst favours emission models developed for FRBs that
describe synchrotron masers or electromagnetic pulses powered by magnetar
bursts and giant flares. The discovery of ST 200428A implies that active
magnetars like SGR 1935+2154 can produce FRBs at extragalactic distances. The
high volumetric rate of events like ST 200428A motivates dedicated searches for
similar bursts from nearby galaxies.},
added-at = {2020-11-09T07:43:42.000+0100},
author = {Bochenek, Christopher D. and Ravi, Vikram and Belov, Konstantin V. and Hallinan, Gregg and Kocz, Jonathon and Kulkarni, Shri R. and McKenna, Dan L.},
biburl = {https://www.bibsonomy.org/bibtex/20cf14f901d0d6fe7f7cf3a314d59d134/citekhatri},
description = {A fast radio burst associated with a Galactic magnetar},
interhash = {e262c783eb5f5f30884cbef4db74b2a3},
intrahash = {0cf14f901d0d6fe7f7cf3a314d59d134},
keywords = {tifr},
note = {cite arxiv:2005.10828Comment: 23 pages, 7 figures, 2 tables. Submitted to Nature},
timestamp = {2020-11-09T07:43:42.000+0100},
title = {A fast radio burst associated with a Galactic magnetar},
url = {http://arxiv.org/abs/2005.10828},
year = 2020
}