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Benchmark for the Determination of the Positronium Formation Fraction in Interstellar Media

Cocks, Daniel; Chaudhary, Himanshu; Machacek, Joshua


Relativistic positrons (>1 MeV) are produced from many sources in the Galaxy. Observations of positrons rely on the characteristic gamma-rays emitted from their annihilation with an electron, and the dominant annihilation pathways are determined by low-energy (<1 keV) processes. Thus, detailed information on the transport of positrons from high to low energies is required to accurately determine the propagation of positrons in the interstellar medium. This work considers model cross sections...[Show more]

CollectionsANU Research Publications
Date published: 2019
Type: Journal article
Source: The Astrophysical Journal
DOI: 10.3847/1538-4357/ab1f08


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