Journal
ASTROPHYSICAL JOURNAL LETTERS
Volume 892, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.3847/2041-8213/ab7cdd
Keywords
Compact radiation sources; Magnetospheric radio emissions; Radio bursts; Neutron stars; Magnetars
Categories
Funding
- NSF [AST-17152]
- CITA postdoctoral fellowship
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The CHIME/FRB collaboration recently reported the detection of a 16 day periodicity in the arrival times of radio bursts from FRB 180916.J0158+65. We study the possibility that the observed periodicity arises from free precession of a magnetized neutron star, and put constraints on different components of the star's magnetic fields. Using a simple geometric model, where radio bursts are emitted from a rotating neutron star magnetosphere, we show that the emission pattern as a function of time can match that observed from FRB 180916.J0158+65.
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