Article Dans Une Revue Nature Année : 2025

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

Ryan Mckinven
Tarraneh Eftekhari
  • Fonction : Auteur
Charles Kilpatrick
Aida Kirichenko
  • Fonction : Auteur
Arpan Pal
Amanda Cook
B. M. Gaensler
Utkarsh Giri
  • Fonction : Auteur
Victoria Kaspi
  • Fonction : Auteur
Kenzie Nimmo
Aaron Pearlman
Ziggy Pleunis
Ketan Sand
  • Fonction : Auteur
Bridget Andersen
Kevin Bandura
Shami Chatterjee
Alice Curtin
  • Fonction : Auteur
Gwendolyn Eadie
  • Fonction : Auteur
Emmanuel Fonseca
  • Fonction : Auteur
Jane Kaczmarek
Bikash Kharel
  • Fonction : Auteur
Mattias Lazda
  • Fonction : Auteur
Calvin Leung
Dongzi Li
  • Fonction : Auteur
Robert Main
  • Fonction : Auteur
Kiyoshi Masui
Juan Mena-Parra
  • Fonction : Auteur
Ayush Pandhi
  • Fonction : Auteur
Swarali Shivraj Patil
  • Fonction : Auteur
J. Xavier Prochaska
Masoud Rafiei-Ravandi
Paul Scholz
Vishwangi Shah
Kaitlyn Shin
Kendrick Smith
  • Fonction : Auteur

Résumé

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° 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.

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Dates et versions

insu-04921323 , version 1 (30-01-2025)

Identifiants

Citer

Ryan Mckinven, Mohit Bhardwaj, Tarraneh Eftekhari, Charles Kilpatrick, Aida Kirichenko, et al.. A pulsar-like polarization angle swing from a nearby fast radio burst. Nature, 2025, 637 (8044), pp.43-47. ⟨10.1038/s41586-024-08184-4⟩. ⟨insu-04921323⟩
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