Photon Propagation in Supercritical Magnetic Field

It is pointed, that for the asymptotically strong superSchwinger magnetic field B, exceeding the critical value of Bcr = (mc/eh) = 4.4 · 10 Gauss, the vacuum polarization effects become important not only in the γ-range, but also for softer electromagnetic quanta, including X-rays, optic photons and for electromagnetic waves of radio frequencies. This is a consequence of the linearly growing term ≍ (B/Bcr) present in the vacuum polarization in the asymptotically strong magnetic field. The results may be essential in studying reflection, refraction and splitting of X-rays, light and radio waves by magnetic fields of magnetars, as well as in considering emission of such waves by charged particles .