Photopositronium in the magnetosphere of a pulsar
Usov V. V., Shabad A. E.
A mixed state of a photon and positronium forms in a strong magnetic field. The corresponding dispersion curves are described. This eifect makes it possible to raise the estimated luminosity of pulsars to the observed values if the magnetic fields at the surfaces of the pulsars are stronger than 4χ 1012 G.