A pulsar-like polarization angle swing from a nearby fast radio burst

• 成果类型: Article
• 署名作者: Mckinven, Ryan; Bhardwaj, Mohit; Eftekhari, Tarraneh; Kilpatrick, Charles D.; Kirichenko, Aida; Pal, Arpan; Cook, Amanda M.; Gaensler, B. M.; Giri, Utkarsh; Kaspi, Victoria M.; Michilli, Daniele; Nimmo, Kenzie; Pearlman, Aaron B.; Pleunis, Ziggy; Sand, Ketan R.; Stairs, Ingrid; Andersen, Bridget C.; Andrew, Shion; Bandura, Kevin; Brar, Charanjot; Cassanelli, Tomas; Chatterjee, Shami; Curtin, Alice P.; Dong, Fengqiu Adam; Eadie, Gwendolyn; Fonseca, Emmanuel; Ibik, Adaeze L.; Kaczmarek, Jane F.; Kharel, Bikash; Lazda, Mattias; Leung, Calvin; Li, Dongzi; Main, Robert; Masui, Kiyoshi W.; Mena-Parra, Juan; Ng, Cherry; Pandhi, Ayush; Patil, Swarali Shivraj; Prochaska, J. Xavier; Rafiei-Ravandi, Masoud; Scholz, Paul; Shah, Vishwangi; Shin, Kaitlyn; Smith, Kendrick
• 署名单位: McGill University; McGill University; Carnegie Mellon University; Northwestern University; Northwestern University; Universidad Nacional Autonoma de Mexico; Tata Institute of Fundamental Research (TIFR); National Centre for Radio Astrophysics (NCRA), Pune; University of Toronto; University of Toronto; University of California System; University of California Santa Cruz; University of Wisconsin System; University of Wisconsin Madison; Massachusetts Institute of Technology (MIT); Massachusetts Institute of Technology (MIT); University of Amsterdam; University of British Columbia; West Virginia University; Universidad de Chile; Cornell University; University of Toronto; University of Toronto; West Virginia University; Commonwealth Scientific & Industrial Research Organisation (CSIRO); University of California System; University of California Berkeley; Princeton University; Universite de Orleans; Centre National de la Recherche Scientifique (CNRS); University of California System; University of California Santa Cruz; University of Tokyo; National Institutes of Natural Sciences (NINS) - Japan; National Astronomical Observatory of Japan (NAOJ); York University - Canada; Perimeter Institute for Theoretical Physics
• 刊物名称: Nature
• ISSN/ISSBN: 0028-1930
• DOI: 10.1038/s41586-024-08184-4
• 发表日期: 2025-01-02
• 关键词: emission; stellar; constraints; propagation; rotations; transient; robopol; galaxy; MODEL

摘要

Fast radio bursts (FRBs) last for milliseconds and arrive at Earth from cosmological distances. Although their origins and emission mechanisms are unknown, their signals bear similarities with the much less luminous radio emission generated by pulsars within our Miky Way Galaxy1, with properties suggesting neutron star origins2,3. However, unlike pulsars, FRBs typically show minimal variability in their linear polarization position angle (PA) curves4. Even when marked PA evolution is present, their curves deviate significantly from the canonical shape predicted by the rotating vector model (RVM) of pulsars5. Here we report on FRB 20221022A, detected by the Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst project (CHIME/FRB) and localized to a nearby host galaxy (about 65 Mpc), MCG+14-02-011. This FRB shows a notable approximately 130 degrees PA rotation over its about 2.5 ms burst duration, resembling the characteristic S-shaped evolution seen in many pulsars and some radio magnetars. The observed PA evolution supports magnetospheric origins6, 7-8 over models involving distant shocks9, 10-11, echoing similar conclusions drawn from tempo-polarimetric studies of some repeating FRBs12,13. The PA evolution is well described by the RVM and, although we cannot determine the inclination and magnetic obliquity because of the unknown period or duty cycle of the source, we exclude very short-period pulsars (for example, recycled millisecond pulsars) as the progenitor.