Fast Radio Bursts from Activity of Neutron Stars Newborn in BNS Mergers: Offset, Birth Rate, and Observational Properties
Fast Radio Bursts from Activity of Neutron Stars Newborn in BNS Mergers: Offset, Birth Rate, and Observational Properties
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BNS 合并中新生中子星活动产生的快速射电爆发:偏移、诞生率和观测特性
DOI:
10.3847/1538-4357/ab74d0
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发表时间:
2020-02
期刊:
影响因子:
--
通讯作者:
Z.G.Dai
中科院分区:
文献类型:
--
作者:
F.Y.Wang;Y.Y.Wang;Yuan-Pei Yang;Y.W.Yu;Z.Y.Zuo;Z.G.Dai
Young neutron stars (NSs) born in core-collapse explosions are promising candidates for the central engines of fast radio bursts (FRBs), since the first localized repeating burst FRB 121102 occurs in a star-forming dwarf galaxy similar to the host galaxies of superluminous supernovae and long gamma-ray bursts. However, FRB 180924 and FRB 190523 are localized to massive galaxies with low rates of star formation, compared with the host of FRB 121102. The offsets between the bursts and host centers are about 4 and 29 kpc for FRB 180924 and FRB 190523, respectively. These host properties are similar to those of short gamma-ray bursts (GRBs), which are produced by binary neutron star (BNS) or NS-black hole mergers. Therefore, the NSs powering FRBs may be formed in BNS mergers. In this paper, we study BNS merger rates and merger times, and predict the most likely merger locations for different types of host galaxies using the population synthesis method. We find that the BNS merger channel is consistent with the recently reported offsets of FRB 180924 and FRB 190523. The offset distribution of short GRBs is well reproduced by population synthesis using a galaxy model similar to that of GRB hosts. The event rate of FRBs (including non-repeating and repeating), is larger than those of BNS mergers and short GRBs, and requires a large fraction of observed FRBs emitting several bursts. Using curvature radiation by bunches in NS magnetospheres, we also predict the observational properties of FRBs from BNS mergers, including the dispersion measure and rotation measure. At late times (t ≥ 1 yr), the contribution to dispersion measure and rotation measure from BNS merger ejecta can be neglected.
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DOI:
--
发表时间:
2013-07
期刊:
arXiv: High Energy Astrophysical Phenomena
影响因子:
--
作者:
S. Popov;Konstantin Postnov
通讯作者:
S. Popov;Konstantin Postnov
DOI:
10.1142/s0217732316300135
发表时间:
2016-04
期刊:
arXiv: High Energy Astrophysical Phenomena
影响因子:
--
作者:
Jonathan I. Katz
通讯作者:
Jonathan I. Katz
影响因子:
4.8
作者:
P. Beniamini;T. Piran
通讯作者:
P. Beniamini;T. Piran
DOI:
10.3847/1538-4357/aa794d
发表时间:
2017-03
期刊:
The Astrophysical Journal
影响因子:
--
作者:
M. Nicholl;P. G. Williams;E. Berger;V. Villar;K. Alexander;T. Eftekhari;B. Metzger
通讯作者:
M. Nicholl;P. G. Williams;E. Berger;V. Villar;K. Alexander;T. Eftekhari;B. Metzger
影响因子:
4.8
作者:
Zhang G Q;Wang F Y
通讯作者:
Wang F Y