Abstract
AbstractWe study the transverse propagation of photons in a magnetized vacuum considering radiative corrections in the one‐loop approximation. The dispersion equation is modified due to the magnetized photon self‐energy in the transparency region (0 < ω < 2me). The aim of our study is to explore the propagation of photons in a neutron star magnetosphere (described by a magnetized vacuum). The solution of the dispersion equation is obtained in terms of analytic functions. The larger the magnetic field, the higher the phase velocity and the more the dispersion curve deviates from the light‐cone. For fixed values of the frequency, we study the dependence of photons time delay with the magnetic field strength, as well as with distance. For the latter, we adopt a magnetic dipole configuration and obtain that, contrary to the expectation, photons of higher energy experience a longer time delay. A discussion of potential causes of this behavior is presented.
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