Are persistent emission luminosity and rotation measure of fast radio bursts related?

Abstract

The physical origin of fast radio bursts (FRBs) is still unknown. Multiwavelength and polarization observations of an FRB source would be helpful to diagnose its progenitor and environment. So far only the first repeating source FRB 121102 appears to be spatially coincident with a persistent radio emission. Its bursts also have very large values of the Faraday rotation measure (RM) i.e., $|\mathrm{RM}|\sim 10^5\mathrm{rad}{\mathrm{m}}^{-2}$. We show that theoretically there should be a simple relation between RM and the luminosity of the persistent source of an FRB source if the observed RM mostly arises from the persistent emission region. FRB 121102 follows this relation given that the magnetic field in the persistent emission region is highly ordered and that the number of relativistic electrons powering the persistent emission is comparable to that of non-relativistic electrons that contribute to RM. The non-detections of persistent emission sources from all other localized FRB sources are consistent with their relatively small RMs ($\left|\mathrm{RM}\right|\lesssim \mathrm{a}\mathrm{few}\times 100\mathrm{rad}{\mathrm{m}}^{-2}$) according to this relation. Based on this picture, the majority of FRBs without a large RM are not supposed to be associated with bright persistent sources.

6 pages, 1 figure, 1 table, accepted for publication in ApJ

References in corpus (17)

• A bright millisecond radio burst of extragalactic origin
• The direct localization of a fast radio burst and its host
• The Host Galaxy and Redshift of the Repeating Fast Radio Burst FRB 121102
• Fast Radio Burst Discovered in the Arecibo Pulsar ALFA Survey
• Fast radio bursts as synchrotron maser emission from decelerating relativistic blast waves
• A repeating fast radio burst source localised to a nearby spiral galaxy
• A single fast radio burst localized to a massive galaxy at cosmological distance
• CHIME/FRB Detection of Eight New Repeating Fast Radio Burst Sources
• The Repeating Fast Radio Burst FRB 121102 as Seen on Milliarcsecond Angular Scales
• A fast radio burst localised to a massive galaxy
• A Second Source of Repeating Fast Radio Bursts
• The low density and magnetization of a massive galaxy halo exposed by a fast radio burst
• Nine New Repeating Fast Radio Burst Sources from CHIME/FRB
• The magnetic field and turbulence of the cosmic web measured using a brilliant fast radio burst
• Observations of Fast Radio Bursts at Frequencies down to 400 Megahertz
• Commensal discovery of four Fast Radio Bursts during Parkes Pulsar Timing Array observations
• Emission from a Pulsar Wind Nebula: Application to the Persistent Radio Counterpart of FRB 121102

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