\begin{document}$ \left(k_{AF}\right)^\mu $\end{document} term exhibits spherical symmetry in the Schwarzschild background. By retaining only terms up to the linear order in the \begin{document}$ \left(k_{AF}\right)^\mu $\end{document} coefficient, we obtain perturbative solutions by treating the solutions of the Lorentz-invariant Maxwell equations as the zeroth-order approximation and incorporating the \begin{document}$ \left(k_{AF}\right)^\mu $\end{document} terms jointly as an additional source term alongside the external charge current. Each resulting NP scalar field can be factorized into two components: the radial component, expressed in terms of hypergeometric functions, and the angular component, described by spin-weighted spherical harmonics."> Analytical solutions of CPT-odd Maxwell equations in Schwarzschild spacetime -
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