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Positron Annihilation in the Galaxy

Published onMay 31, 2019
Positron Annihilation in the Galaxy


The 511 keV line from positron annihilation in the Galaxy was detected ~50 years ago, but the source of positrons is still unconfirmed and remains one of the enduring mysteries in gamma-ray astronomy. We will summarize the current knowledge base of Galactic positrons, and discuss how next-generation instruments could finally provide the answers.

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