This research reveals the birefringence effect on X-ray and gamma-ray pulses in pulsar fields, suggesting significant alterations in polarization states.
Within the framework of the parameterized post-Maxwellian vacuum electrodynamics, the propagation of an X-ray or gamma-ray pulse through the electromagnetic field of a relativistically rotating pulsar is studied. Expressions are obtained for the trajectory of this pulse and the law The effect of electromagnetic radiation birefringence in the field of a relativistically rotating pulsar or magnetar within the framework of vacuum nonlinear electrodynamicsof its motion from the point rₛ=ₛ,yₛ,zₛ\, where an X-ray or gamma-ray burst occurs at time t=tₛ to the point rd=ₛ,yₛ,zd\, where the detector of this radiation is located. In the case when the post-Maxwellian parameters of the theory differ, η₁≠η₂, the time of nonlinear electrodynamic delay of electromagnetic signals transported by different normal modes is calculated. The change in the polarization state of the X-ray or gamma-ray pulse after passing through the electromagnetic field of the relativistically rotating pulsar is analyzed.
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Seidaliyeva et al. (2025) studied this question.
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