A New Limit on Intergalactic Magnetic Fields on Subkiloparsec Scales from Fast Radio Bursts

A New Limit on Intergalactic Magnetic Fields on Subkiloparsec Scales from Fast Radio Bursts

We use the measured scattering timescales of fast radio bursts (FRBs) from the CHIME catalog to derive an upper limit on the magnetic field on subkiloparsec scales in the intergalactic medium (IGM). A nonmagnetized, photoionized IGM is insufficient to explain the turbulent scattering at all redshift...

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Bibliographic Details
Main Authors: Hamsa Padmanabhan, Abraham Loeb
Format: Article
Language:English
Published: IOP Publishing 2023-01-01
Series:The Astrophysical Journal Letters
Subjects:
Radio transient sources
Intergalactic medium
Magnetic fields
Online Access:https://doi.org/10.3847/2041-8213/acc3a1

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