Abstract

Spectra, angular distribution and polarization of the two photon annihilation radiation in a strong magnetic field B are studied in detail for sufficiently slow electrons and positrons (annihilation at rest) and for a one-dimensional thermal e ± plasma with not too strong magnetic field (B/B cr⪡min (1, T/mc 2), see text). Many simple analytical expressions for the limiting cases are obtained and numerical calculations of the energy-integrated polarization degree are presented.

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