Two-photon annihilation radiation in strong magnestic field

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Annihilation Reactions, Photonuclear Reactions, Pulsars, Stellar Magnetic Fields, Stellar Radiation, Gamma Ray Bursts, Relativistic Theory, Stellar Spectra

Scientific paper

The authors have derived the relativistic expressions for the intensity and polarization of the two-photon annihilation radiation from a ground-state gas of electrons and positrons in the presence of the static, uniform magnetic field for the case of the negligible small relative velocity of electrons and positrons and for the case of a thermal distribution of electrons and positrons with temperature T = t(mc2/K), when magnetic field is not too strong B/Bcr very low min(t,1). Many simple analytical expressions for the limiting cases are obtained and numerical evalutations of the radiation intensity I and its parameter Q and polarization degree are presented.

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