Sub-second periodicity in a fast radio burst

  title={Sub-second periodicity in a fast radio burst},
  author={Bridget C. Andersen and Kevin Bandura and Mohit Bhardwaj and P. J. Boyle and C. Brar and D. Breitman and Tomas Cassanelli and Shami Chatterjee and Pragya Chawla and J. F. Cliche and D. Cubranic and Alice P. Curtin and Meiling Deng and M. A. Dobbs and Fengqiu Adam Dong and Emanuel Fonseca and Bryan M. Gaensler and U. Giri and Deborah C. Good and Alex S. Hill and Alexander Josephy and Jane F. Kaczmarek and Zarif Kader and Joseph Kania and Victoria M. Kaspi and Calvin Leung and D. Z. Li and Hsiu-Hsien Lin and Kiyoshi W. Masui and Ryan Mckinven and Juan Mena-Parra and Marcus Merryfield and Bradley W. Meyers and Daniele Michilli and Arun Kumar Naidu and Laura Newburgh and C. Ng and A. Ordog and C. Patel and Aaron B. Pearlman and Ue-li Pen and Emily Petroff and Z. Pleunis and Masoud Rafiei-Ravandi and Mubdi Rahman and Scott M. Ransom and Andre Renard and P. Sanghavi and Paul Scholz and J. Richard Shaw and Kaitlyn Shin and S. R. Siegel and Saurabh Singh and Kendrick Smith and Ingrid H. Stairs and Chia Min Tan and Shriharsh P. Tendulkar and Keith Vanderlinde and Donald V. Wiebe and Dallas Wulf and A. V. Zwaniga and Daniele Michilli},
The 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… Expand
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