A Universal Energy Distribution for FRB 121102

被引：34

作者：

Wang, F. Y. ^{[1
,2
]}

Zhang, G. Q. ^{[1
]}

机构：

[1] Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China

[2] Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210093, Jiangsu, Peoples R China

来源：

ASTROPHYSICAL JOURNAL | 2019年 / 882卷 / 02期

基金：

中国国家自然科学基金;

关键词：

radio continuum: general; FAST RADIO-BURSTS; SELF-ORGANIZED CRITICALITY; ENVIRONMENT; LUMINOSITY; MAGNETAR; RATES;

D O I：

10.3847/1538-4357/ab35dc

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Fast radio bursts (FRBs) are millisecond radio transients with large dispersion measures. An outstanding question is the relation between repeating FRBs and those with a single burst. In this paper, we study the energy distribution of the repeating FRB 121102. For a power-law distribution of energy dN/dE proportional to E-alpha E, we show that the value of alpha(E) is in a narrow range 1.6-1.8 for bursts observed by different telescopes at different frequencies, which indicates a universal energy distribution for FRB 121102. Interestingly, a similar power-law index of energy distribution for nonrepeating FRBs observed by Parkes and ASKAP is also found. However, if low-energy bursts below the completeness threshold of Arecibo are discarded for FRB 121102, the slope could be up to 2.2. Implications of such a universal energy distribution are discussed.

引用

页数：10

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