A Binary Comb Model for Periodic Fast Radio Bursts

被引：96

作者：

Ioka, Kunihito ^{[1
]}

Zhang, Bing ^{[1
,2
]}

机构：

[1] Kyoto Univ, Yukawa Inst Theoret Phys, Ctr Gravitat Phys, Kyoto 6068502, Japan

[2] Univ Nevada, Dept Phys & Astron, Las Vegas, NV 89154 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2020年 / 893卷 / 01期

关键词：

REIONIZATION HISTORY; MASS-LOSS; PULSAR; AFTERGLOWS; SCATTERING; EVOLUTION;

D O I：

10.3847/2041-8213/ab83fb

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We show that the periodic FRB 180916.J0158+65 can be interpreted by invoking an interacting neutron star binary system with an orbital period of similar to 16 days. The FRBs are produced by a highly magnetized pulsar, whose magnetic field is "combed" by the strong wind from a companion star, either a massive star or a millisecond pulsar. The FRB pulsar wind retains a clear funnel in the companion's wind that is otherwise opaque to induced Compton or Raman scatterings for repeating FRB emission. The 4 day active window corresponds to the time when the funnel points toward Earth. The interaction also perturbs the magnetosphere of the FRB pulsar and may trigger emission of FRBs. We derive the physical constraints on the comb and the FRB pulsar from the observations and estimate the event rate of FRBs. In this scenario, a lower limit on the period of observable FRBs is predicted. We speculate that both the intrinsic factors (strong magnetic field and young age) and the extrinsic factor (interaction) may be needed to generate FRBs in neutron star binary systems.

引用

页数：7

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