Retraction Note: Sub-second periodicity in a fast radio burst

Department of Physics, McGill University, Montréal, Québec, Canada Bridget C. Andersen, Mohit Bhardwaj, P. J. Boyle, Charanjot Brar, Pragya Chawla, Jean-François Cliche, Alice P. Curtin, Matt Dobbs, Emmanuel Fonseca, Alexander Josephy, Zarif Kader, Victoria M. Kaspi, Marcus Merryfield, D. Michilli, Arun Naidu, Chitrang Patel, Aaron B. Pearlman, Emily Petroff, Ziggy Pleunis, Seth R. Siegel, Saurabh Singh, Chia Min Tan, Dallas Wulf & Andrew Zwaniga McGill Space Institute, McGill University, Montréal, Québec, Canada Bridget C. Andersen, Mohit Bhardwaj, P. J. Boyle, Charanjot Brar, Pragya Chawla, Jean-François Cliche, Alice P. Curtin, Matt Dobbs, Emmanuel Fonseca, Alexander Josephy, Zarif Kader, Victoria M. Kaspi, Marcus Merryfield, D. Michilli, Arun Naidu, Aaron B. Pearlman, Emily Petroff, Ziggy Pleunis, Seth R. Siegel, Saurabh Singh, Chia Min Tan, Dallas Wulf & Andrew Zwaniga Lane Department of Computer Science and Electrical Engineering, West Virginia University, Morgantown, WV, USA Kevin Bandura & Pranav Sanghavi Center for Gravitational Waves and Cosmology, West Virginia University, Morgantown, WV, USA Kevin Bandura, Joseph Kania & Pranav Sanghavi Department of Physics, University of Toronto, Toronto, Ontario, Canada Daniela Breitman Dunlap Institute for Astronomy & Astrophysics, University of Toronto, Toronto, Ontario, Canada Daniela Breitman, Tomas Cassanelli, B. M. Gaensler, Ryan Mckinven, C. …