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Science & ResearchAug 5, 2026

Vacuum birefringence and the polarized X-ray emission from a radio magnetar.

Magnetars are isolated neutron stars with exceptionally strong surface fields exceeding 10 14 G (ref.

Magnetars are isolated neutron stars with exceptionally strong surface fields exceeding 10 14 G (ref. 1 ). Their bright X-ray emission probes physical regimes in which quantum electrodynamics (QED) influences radiation propagation 2-4 . Strong magnetic fields induce…

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