Fast radio bursts originate near the surface of stars
Briefly

The rapid change in polarization angle observed in FRB 20221022A suggests its source is likely a compact, rapidly rotating object, similar to pulsars.
Scattering from interstellar material causes a frequency-dependent spreading of the FRB burst, alongside random brightening or dimming of its spectrum due to scintillation.
Read at Ars Technica
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