Production of electron-positron pairs by a photon propagating in a strongly magnetized thermal bath |
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Authors: | M A Dunaev N V Mikheev |
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Institution: | 1.Yaroslavl State University,Yaroslavl,Russia |
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Abstract: | The production of electron-positron pairs by a photon propagating in a thermal bath in both zero and strong (B ≫ 4.41 × 1013 G) magnetic fields has been considered. The mean free path has been calculated for the high-energy photon propagating through
a thermodynamically equilibrium photon gas along the magnetic field lines so that the γ → e
−
e
+ decay is kinematically forbidden. It has been shown that the strong magnetic field suppresses the probability of the γγ′
→ e
−
e
+ process. The analyzed process can be useful for analysis of possible mechanisms of the generation of the e
−
e
+ plasma in the regions of the polar caps of magnetars. |
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Keywords: | |
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