The Role of Magnetic and Rotation Axis Alignment in Driving Fast Radio Burst Phenomenology
We propose a scenario that can describe a broad range of fast radio burst (FRB) phenomenology, from nonrepeating bursts to highly prolific repeaters. Coherent radio waves in these bursts are produced in the polar cap region of a magnetar, where magnetic field lines are open. The angle between the ro...
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IOP Publishing
2025-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/adb8e6 |
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| author | Paz Beniamini Pawan Kumar |
| author_facet | Paz Beniamini Pawan Kumar |
| author_sort | Paz Beniamini |
| collection | DOAJ |
| description | We propose a scenario that can describe a broad range of fast radio burst (FRB) phenomenology, from nonrepeating bursts to highly prolific repeaters. Coherent radio waves in these bursts are produced in the polar cap region of a magnetar, where magnetic field lines are open. The angle between the rotation and magnetic axes, relative to the angular size of the polar cap region, partially determines the repetition rate and polarization properties of FRBs. We discuss how many of the properties of repeating FRBs—such as their lack of periodicity, energetics, small polarization angle (PA) swing, spectro–temporal correlation, and inferred low source density— are explained by this scenario. The systematic PA swing and the periodic modulation of long-duration bursts from nonrepeaters are also natural outcomes. We derive a lower limit of about 400 on the Lorentz factor of FRB sources applying this scenario to bursts with a linear polarization degree greater than 95%. |
| format | Article |
| id | doaj-art-d7a333f74b3e4122b867b9bf07fd1dbf |
| institution | DOAJ |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj-art-d7a333f74b3e4122b867b9bf07fd1dbf2025-08-20T02:56:23ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-0198214510.3847/1538-4357/adb8e6The Role of Magnetic and Rotation Axis Alignment in Driving Fast Radio Burst PhenomenologyPaz Beniamini0https://orcid.org/0000-0001-7833-1043Pawan Kumar1Department of Natural Sciences, The Open University of Israel , P.O. Box 808, Ra’anana 4353701, Israel ; pazb@openu.ac.il; Astrophysics Research Center of the Open University (ARCO), The Open University of Israel , P.O. Box 808, Ra’anana 4353701, Israel; Department of Physics, The George Washington University , 725 21st Street NW, Washington, DC 20052, USADepartment of Astronomy, University of Texas at Austin , Austin, TX 78712, USAWe propose a scenario that can describe a broad range of fast radio burst (FRB) phenomenology, from nonrepeating bursts to highly prolific repeaters. Coherent radio waves in these bursts are produced in the polar cap region of a magnetar, where magnetic field lines are open. The angle between the rotation and magnetic axes, relative to the angular size of the polar cap region, partially determines the repetition rate and polarization properties of FRBs. We discuss how many of the properties of repeating FRBs—such as their lack of periodicity, energetics, small polarization angle (PA) swing, spectro–temporal correlation, and inferred low source density— are explained by this scenario. The systematic PA swing and the periodic modulation of long-duration bursts from nonrepeaters are also natural outcomes. We derive a lower limit of about 400 on the Lorentz factor of FRB sources applying this scenario to bursts with a linear polarization degree greater than 95%.https://doi.org/10.3847/1538-4357/adb8e6Radio transient sourcesNeutron starsMagnetars |
| spellingShingle | Paz Beniamini Pawan Kumar The Role of Magnetic and Rotation Axis Alignment in Driving Fast Radio Burst Phenomenology The Astrophysical Journal Radio transient sources Neutron stars Magnetars |
| title | The Role of Magnetic and Rotation Axis Alignment in Driving Fast Radio Burst Phenomenology |
| title_full | The Role of Magnetic and Rotation Axis Alignment in Driving Fast Radio Burst Phenomenology |
| title_fullStr | The Role of Magnetic and Rotation Axis Alignment in Driving Fast Radio Burst Phenomenology |
| title_full_unstemmed | The Role of Magnetic and Rotation Axis Alignment in Driving Fast Radio Burst Phenomenology |
| title_short | The Role of Magnetic and Rotation Axis Alignment in Driving Fast Radio Burst Phenomenology |
| title_sort | role of magnetic and rotation axis alignment in driving fast radio burst phenomenology |
| topic | Radio transient sources Neutron stars Magnetars |
| url | https://doi.org/10.3847/1538-4357/adb8e6 |
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