Can a Single Population Account for the Discriminant Properties in Fast Radio Bursts?

被引：22

作者：

Zhong, Shu-Qing ^{[1
]}

Xie, Wen-Jin ^{[2
]}

Deng, Can-Min ^{[3
]}

Li, Long ^{[4
]}

Dai, Zi-Gao ^{[1
,4
]}

Zhang, Hai-Ming ^{[4
]}

机构：

[1] Univ Sci & Technol China, Sch Phys Sci, Dept Astron, Hefei 230026, Peoples R China

[2] Univ Paris, IRFU DAp AIM, CEA Paris Saclay, F-91191 Gif Sur Yvette, France

[3] Guangxi Univ, Dept Phys, Guangxi Key Lab Relativist Astrophys, Nanning 530004, Peoples R China

[4] Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Peoples R China

来源：

ASTROPHYSICAL JOURNAL | 2022年 / 926卷 / 02期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

SYNCHROTRON MASER EMISSION; NEUTRON-STARS; EVOLUTION; UNIVERSE; MERGERS; PULSAR; MODEL;

D O I：

10.3847/1538-4357/ac4d98

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

It is still a highly debated question as to whether fast radio bursts (FRBs) are classified into one or two populations. To probe this question, we perform a statistical analysis using the first Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst (CHIME/FRB) catalog and identify a few discriminant properties between repeating and non-repeating FRBs such as the repetition rate, duration, bandwidth, spectral index, peak luminosity, and potential peak frequency. If repeating and non-repeating FRBs belong to one population, their distribution distinctions for the repetition rate and duration can be explained by the selection effect due to the beamed emission as in Connor et al. However, we obtain that the distribution distinctions for the spectral index and potentially the peak frequency cannot be explained by the beamed emission within the framework of either the coherent curvature radiation or synchrotron maser emission. This indicates that there could be two populations. We further discuss three possible scenarios for the required two populations.

引用

页数：8

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