Annihilation radiation from thermal electron-positron plasma on the ground Landau level : the case of low magnetic fields

• Published in: Astrophysics and space science Vol. 174; no. 2; pp. 241 - 284
• Main Authors: KAMINKER, A. D, PAVLOV, G. G, MAMRADZE, P. G
• Format: Journal Article
• Language: English
• Published: Dordrecht Kluwer 01-12-1990
• Subjects: Astronomy; Earth, ocean, space; Exact sciences and technology; Fundamental aspects of astrophysics; Fundamental astronomy and astrophysics. Instrumentation, techniques, and astronomical observations; Magnetohydrodynamics and plasmas; Radiations; Polarization; Magnetohydrodynamics; Theoretical model; Landau level; Rγ burst; Intensity; Digital simulation; Particle annihilation; Thermal plasma
• ISSN: 0004-640X; 1572-946X
• DOI: 10.1007/BF00642511

This paper continues the study of Kaminker et al. (1987) of the two-photon annihilation radiation from thermal electron-positron plasma of the ground Landau level, taking into account the longitudinal motion. Results show that spectra of the intensity I of the annihilation radiation on the ground Landau level depend essentially on plasma temperature and on the angle delta between the magnetic field and the wave vector. The shapes of the intensity spectra at sin delta = 0 are close to those in the isotropic case. It is shown that the angular distributions of the intensity essentially depend on the photon energy. The total annihilation rate and the energy losses decrease with increasing temperature. It was also found that the annihilation radiation is linearly polarized. (I.S.)