The absence of periodicity in repeating FRB

被引：7
|
作者：
Katz, J., I [1 ,2 ]
机构：
[1] Washington Univ, Dept Phys, St Louis, MO 63130 USA
[2] Washington Univ, McDonnell Ctr Space Sci, St Louis, MO 63130 USA
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2022年 / 513卷 / 02期
关键词：
stars: black holes; stars: magnetars; accretion; accretion discs; radio continuum; transients: fast radio bursts; FAST RADIO-BURSTS;
D O I：
10.1093/mnras/stac1059
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Popular fast radio burst (FRB) models involve rotating magnetized neutron stars, yet no rotational periodicities have been found. Small data sets exclude exact periodicity in FRB 121102. Recent observations of over 1500 bursts from each of FRB 121102 and FRB 20201124A have also not found periodicity. Periodograms of events with cosine-distributed random offsets as large as +/- 0.6P from a strict period P would still reveal the underlying periodicity. The sensitivity of periodograms of long data series, such as bursts observed on multiple days, to slow frequency drifts is mitigated by considering individual observing sessions, and results are shown for FRB 121102. Models of repeating FRB without intrinsic periodicity are considered, as are models of apparently non-repeating FRBs.
引用
收藏
页码：1925 / 1931
页数：7
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