Preprint
Oct 2026
Inferring magnetic field strengths in high-redshift lensing galaxies from Faraday rotation measure observations
Observations of Faraday rotation in the lensing galaxy of CLASS B1152+199 at z = 0.439 suggest that efficient dynamo mechanisms had already amplified galactic magnetic fields by this epoch. We assess the reliability of this method for deriving magnetic field strengths and the likelihood of observing similarly large Far...
S. Reissl, R. Klessen, A. Pillepich et al.
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