IXPE data on magnetar 1E 1547.0-5408 show high linear polarization from a small hot spot whose phase-dependent angle is fit by a rotating vector model, with a marginal energy-dependent dip in polarization degree that may indicate vacuum resonance but does not constitute compelling evidence for biref
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A first-order semi-analytical framework shows resonant Compton scattering can erase or add 90-degree polarization angle swings in magnetar soft X-ray spectra depending on magnetic twist and plasma drift velocity.
citing papers explorer
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The long quest for vacuum birefringence in magnetars: 1E 1547.0-5408 and the elusive smoking gun
IXPE data on magnetar 1E 1547.0-5408 show high linear polarization from a small hot spot whose phase-dependent angle is fit by a rotating vector model, with a marginal energy-dependent dip in polarization degree that may indicate vacuum resonance but does not constitute compelling evidence for biref
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Impact of Resonant Compton Scattering on Magnetar X-Ray Polarization with QED Vacuum Resonance
A first-order semi-analytical framework shows resonant Compton scattering can erase or add 90-degree polarization angle swings in magnetar soft X-ray spectra depending on magnetic twist and plasma drift velocity.