Positron astrophysics and positron states in the low-density Galactic medium

Details Positron astrophysics and positron states in the low-density Galactic medium Positron astrophysics and positron states in the low-density Galactic medium

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993azh....70..906p&link_type=abstract

Astronomicheskij Zhurnal, vol. 70, p. 906

Astronomy and Astrophysics

Astronomy

1

Space Density, Positron Annihilation, Galactic Nuclei, Positronium, Energy Dissipation, Particle Energy

Scientific paper

Properties of positron states in the low-density Galactic medium are briefly considered and analyzed. It is shown that the main positron states in this medium, in addition to fast positrons, are: 'thermalized' positrons, positronium atoms, and positron-bound states on hydrogen atoms. Positron annihilation from positronium atoms and bound states results in a sharp narrowing of the annihilation line Doppler broadening curves, in agreement with the available experimental data.

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