Sub-second periodicity in a fast radio burst

Sub-second periodicity in a fast radio burst
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DOI：
10.1038/s41586-022-04841-8
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发表时间：
2021-07
期刊：
Nature
影响因子：
64.8
通讯作者：
B. Andersen;K. Bandura;M. Bhardwaj;P. Boyle;C. Brar;D. Breitman;T. Cassanelli;S. Chatterjee;P. Chawla;J. Cliche;D. Cubranic;A. Curtin;M. Deng;M. Dobbs;F. Dong;E. Fonseca;B. Gaensler;U. Giri;D. Good;A. Hill;A. Josephy;J. Kaczmarek;Zarif Kader;Joseph W. Kania;V. Kaspi;C. Leung;D. Li;Hsiu-Hsien Lin;K. Masui;R. Mckinven;J. Mena-Parra;M. Merryfield;B. W. Meyers;D. Michilli;A. Naidu;L. Newburgh;C. Ng;A. Ordog;C. Patel;A. Pearlman;U. Pen;E. Petroff;Z. Pleunis;M. Rafiei-Ravandi;Mubdi Rahman;S. Ransom;A. Renard;P. Sanghavi;P. Scholz;J. Shaw;K. Shin;S. Siegel;Saurabh Singh;Kendrick M. Smith;I. Stairs;C. M. Tan;S. Tendulkar;K. Vanderlinde;D. Wiebe;D. Wulf;A. Zwaniga;D. Michilli
B. Andersen;K. Bandura;M. Bhardwaj;P. Boyle;C. Brar;D. Breitman;T. Cassanelli;S. Chatterjee;P. Chawla;J. Cliche;D. Cubranic;A. Curtin;M. Deng;M. Dobbs;F. Dong;E. Fonseca;B. Gaensler;U. Giri;D. Good;A. Hill;A. Josephy;J. Kaczmarek;Zarif Kader;Joseph W. Kania;V. Kaspi;C. Leung;D. Li;Hsiu-Hsien Lin;K. Masui;R. Mckinven;J. Mena-Parra;M. Merryfield;B. W. Meyers;D. Michilli;A. Naidu;L. Newburgh;C. Ng;A. Ordog;C. Patel;A. Pearlman;U. Pen;E. Petroff;Z. Pleunis;M. Rafiei-Ravandi;Mubdi Rahman;S. Ransom;A. Renard;P. Sanghavi;P. Scholz;J. Shaw;K. Shin;S. Siegel;Saurabh Singh;Kendrick M. Smith;I. Stairs;C. M. Tan;S. Tendulkar;K. Vanderlinde;D. Wiebe;D. Wulf;A. Zwaniga;D. Michilli
中科院分区：
综合性期刊1区
文献类型：
--
作者：
B. Andersen;K. Bandura;M. Bhardwaj;P. Boyle;C. Brar;D. Breitman;T. Cassanelli;S. Chatterjee;P. Chawla;J. Cliche;D. Cubranic;A. Curtin;M. Deng;M. Dobbs;F. Dong;E. Fonseca;B. Gaensler;U. Giri;D. Good;A. Hill;A. Josephy;J. Kaczmarek;Zarif Kader;Joseph W. Kania;V. Kaspi;C. Leung;D. Li;Hsiu-Hsien Lin;K. Masui;R. Mckinven;J. Mena-Parra;M. Merryfield;B. W. Meyers;D. Michilli;A. Naidu;L. Newburgh;C. Ng;A. Ordog;C. Patel;A. Pearlman;U. Pen;E. Petroff;Z. Pleunis;M. Rafiei-Ravandi;Mubdi Rahman;S. Ransom;A. Renard;P. Sanghavi;P. Scholz;J. Shaw;K. Shin;S. Siegel;Saurabh Singh;Kendrick M. Smith;I. Stairs;C. M. Tan;S. Tendulkar;K. Vanderlinde;D. Wiebe;D. Wulf;A. Zwaniga;D. Michilli

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快速射电暴（Fast Radio Burst，简称FRB）是一种毫秒级的无线电波闪光，在数十亿光年的距离上都可以看到。它们的祖先的性质和发射机制仍然是天体物理学的一个悬而未决的问题。在这里，我们报告了多组分FRB 20191221 A的检测和其组分之间216.8（1）ms的周期性分离的识别，具有6.5σ的显著性。长（约3秒）的持续时间和九个或更多的组成部分形成的脉冲轮廓，使这个源的FRB人口中的离群值。如此短的周期性为该事件的中子星起源提供了强有力的证据。此外，我们的探测有利于发射所产生的中子-星星磁层，而不是发射区域位于更远离星星，如一些模型所预测的。
Fast radio bursts (FRBs) are millisecond-duration flashes of radio waves that are visible at distances of billions of light years. The nature of their progenitors and their emission mechanism remain open astrophysical questions. Here we report the detection of the multicomponent FRB 20191221A and the identification of a periodic separation of 216.8(1) ms between its components, with a significance of 6.5σ. The long (roughly 3 s) duration and nine or more components forming the pulse profile make this source an outlier in the FRB population. Such short periodicity provides strong evidence for a neutron-star origin of the event. Moreover, our detection favours emission arising from the neutron-star magnetosphere,, as opposed to emission regions located further away from the star, as predicted by some models.