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

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By Bridget C. Andersen, Kevin Bandura, Mohit Bhardwaj Verified, P. J. Boyle, Daniela Breitman, Tomas Cassanelli, Shami Chatterjee, Pragya Chawla, Jean-François Cliche Verified, Davor Cubranic, Alice P. Curtin, Meiling Deng, Matt Dobbs, Fengqiu Adam Dong, Emmanuel Fonseca, B. M. Gaensler, Utkarsh Giri, Deborah Good, Alex Hill, Alexander Josephy, J. Kaczmarek, Zarif Kader, Joseph Kania, Victoria M. Kaspi, Calvin Leung, D. Li, Hsiu-Hsien Lin, Kiyoshi W. Masui, Ryan Mckinven, Juan Mena-Parra, B. W. Meyers, D. Michilli, arun naidu, C. Ng, Aaron B. Pearlman, Ue-Li Pen, Emily Petroff, Ziggy Pleunis, Masoud Rafiei-Ravandi, Mubdi Rahman, Scott Ransom, Andre Renard, Pranav Sanghavi, Paul Scholz, Kaitlyn Shin, Seth Siegel, Saurabh Singh, Kendrick L. Smith, Ingrid Stairs, Shriharsh P. Tendulkar, Keith Vanderlinde, Andrew Zwaniga, Charanjot Brar, Marcus Merryfield, Laura Newburgh, Anna Ordog, Chitrang Patel, J. Richard Shaw, D. V. Wiebe, Dallas Wulf
| Nature Verified
Retraction to: Nature https://doi.org/10.1038/s41586-022-04841-8 Published online 13 July 2022 The authors have retracted this article after identifying a crucial error: due to an unusual calibration problem, CHIME’s digital beams were incorrectly pointed when FRB 20191221A was detected. The sub-second periodicity that they associated with the putative fast radio burst FRB 20191221A was, in reality, a periodic signal from the known Galactic pulsar PSR J0248 + 6021.
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