Sub-second periodicity in a fast radio burst
Sub-second periodicity in a fast radio burst
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 multi-component FRB 20191221A 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. 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.
Ue-Li Pen、Keith Vanderlinde、Kendrick Smith、Hsiu-Hsien Lin、Laura Newburgh、Andre Renard、Tomas Cassanelli、Victoria M. Kaspi、D. Michilli、Arun Naidu、Anna Ordog、Kiyoshi W. Masui、Paul Scholz、Daniela Breitman、Emily Petroff、P. J. Boyle、Pranav Sanghavi、D. V. Wiebe、Aaron B. Pearlman、Mohit Bhardwaj、Kaitlyn Shin、Ryan Mckinven、B. W. Meyers、Chia Min Tan、Alexander Josephy、Chitrang Patel、Saurabh Singh、Fengqiu Adam Dong、Alex S. Hill、Dallas Wulf、Matt Dobbs、Ingrid Stairs、Shriharsh P. Tendulkar、Charanjot Brar、Mubdi Rahman、Deborah C. Good、Scott Ransom、J. F. Kaczmarek、B. M. Gaensler、Ziggy Pleunis、Marcus Merryfield、Shami Chatterjee、Seth R. Siegel、C. Ng、Jean-Fran?ois Cliche、Pragya Chawla、The CHIME/FRB Collaboration、Meiling Deng、Andrew Zwaniga、J. Richard Shaw、Calvin Leung、Joseph Kania、Davor Cubranic、Bridget C. Andersen、Juan Mena-Parra、D. Z. Li、Masoud Rafiei-Ravandi、Kevin Bandura、Zarif Kader、Utkarsh Giri、Emmanuel Fonseca、Alice P. Curtin
天文学
Ue-Li Pen,Keith Vanderlinde,Kendrick Smith,Hsiu-Hsien Lin,Laura Newburgh,Andre Renard,Tomas Cassanelli,Victoria M. Kaspi,D. Michilli,Arun Naidu,Anna Ordog,Kiyoshi W. Masui,Paul Scholz,Daniela Breitman,Emily Petroff,P. J. Boyle,Pranav Sanghavi,D. V. Wiebe,Aaron B. Pearlman,Mohit Bhardwaj,Kaitlyn Shin,Ryan Mckinven,B. W. Meyers,Chia Min Tan,Alexander Josephy,Chitrang Patel,Saurabh Singh,Fengqiu Adam Dong,Alex S. Hill,Dallas Wulf,Matt Dobbs,Ingrid Stairs,Shriharsh P. Tendulkar,Charanjot Brar,Mubdi Rahman,Deborah C. Good,Scott Ransom,J. F. Kaczmarek,B. M. Gaensler,Ziggy Pleunis,Marcus Merryfield,Shami Chatterjee,Seth R. Siegel,C. Ng,Jean-Fran?ois Cliche,Pragya Chawla,The CHIME/FRB Collaboration,Meiling Deng,Andrew Zwaniga,J. Richard Shaw,Calvin Leung,Joseph Kania,Davor Cubranic,Bridget C. Andersen,Juan Mena-Parra,D. Z. Li,Masoud Rafiei-Ravandi,Kevin Bandura,Zarif Kader,Utkarsh Giri,Emmanuel Fonseca,Alice P. Curtin.Sub-second periodicity in a fast radio burst[EB/OL].(2021-07-18)[2025-05-16].https://arxiv.org/abs/2107.08463.点此复制
评论