标签：FRB star 周期 量级 FAST FRBs radio CHIME neutron
前面FAST说没找到FRB121102的秒量级的周期, 这里CHIME就找到了几个有秒量级周期的FRBsThe origin of fast radio bursts (FRBs), millisecond-duration flashes of radio waves that are visible at distances of billions of light-years, remains an open astrophysical question. Here we report the detection of the multi-component FRB 20191221A with the Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst Project (CHIME/FRB), and the identification of a periodic separation of 216.8(1) ms between its components with a significance of 6.5 sigmas. The long (~ 3 s) duration and nine or more components forming the pulse profile make this source an outlier in the FRB population. We also report two additional FRBs, 20210206A and 20210213A, whose multi-component pulse profiles show some indication of periodic separations of 2.8(1) and 10.7(1) ms, respectively, suggesting the possible existence of a group of FRBs with complex and periodic pulse profiles. Such short periodicities provide strong evidence for a neutron-star origin of these events. Moreover, our detections favour emission arising from the neutron-star magnetosphere, as opposed to emission regions located further away from the star, as predicted by some models. Possible explanations for the observed periodicity include super-giant pulses from a neutron star that are possibly related to a magnetar outburst and interacting neutron stars in a binary system.
Pasted from: https://arxiv.org/list/astro-ph/new
分析方法
2022年7月14日在Nature发表了:
Sub-second periodicity in a fast radio burst | NatureWe found two other notable sources, FRBs 20210206A and 20210213A, that are formed by five and six components and show possible periodicities of 2.8(1) and 10.7(1) ms, respectively.另外还有几个暴, 也有这种很短的周期, 不过不那么好.
附件列表
标签：FRB,star,周期,量级,FAST,FRBs,radio,CHIME,neutron 来源： https://www.cnblogs.com/zouastro/p/16478759.html
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