QED effects on Kerr black hole shadows immersed in uniform magnetic fields

In this work, taking the QED effect into account, we investigate shadows of Kerr black holes immersed in uniform magnetic fields through numerical backward ray-tracing method. We introduce a dimensionless parameter $\Lambda$ to characterize strength and studied influence on hole for various spins inclination angles observers. particular, find that photon "hairs" appear near left edge shadow presence fields. The hairs may be served as signature notice become more evident when or spin becomes larger. addition, study deformation by bringing quantitative parameters can describe position shape edge.