Emission from a Pulsar Wind Nebula: Application to the Persistent Radio Counterpart of FRB 121102

Abstract

The properties of fast radio bursts (FRBs) indicate that the physical origin of this type of astrophysical phenomenon is related to neutron stars. The first detected repeating source, FRB 121102, is associated with a persistent radio counterpart. In this paper, we propose that this radio counterpart could arise from a pulsar wind nebula powered by a magnetar without surrounding supernova ejecta. Its medium is a stratified structure produced by a progenitor wind. The model parameters are constrained by the spectrum of the counterpart emission, the size of the nebula, and the large but decreasing rotation measure (RM) of the repeating bursts. In addition, the observed dispersion measure is consistent with the assumption that all of the RM comes from the shocked medium.

10 pages, 4 figures, 1 table. Published in the Astrophysical Journal on Nov. 11, 2019

References in corpus (11)

• A bright millisecond radio burst of extragalactic origin
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• The direct localization of a fast radio burst and its host
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• Fast Radio Burst Discovered in the Arecibo Pulsar ALFA Survey
• The Repeating Fast Radio Burst FRB 121102 as Seen on Milliarcsecond Angular Scales
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Cited by in corpus (4)

• Radio emission from a decade old Type I superluminous supernova, PTF10hgi: Comparison with FRB121102
• Periodic fast radio bursts from forcedly precessing neutron stars, anomalous torque, and internal magnetic field for FRB 180916.J0158+65 and FRB 121102
• Persistent Radio Emission from Synchrotron Heating by a Repeating Fast Radio Burst Source in a Nebula
• FRB 190520B embedded in a magnetar wind nebula and supernova remnant: luminous persistent radio source, decreasing dispersion measure and large rotation measure