Positron Annihilation in the Galaxy

Carolyn Kierans,John F. Beacom,S. E. Boggs,Matthew R. Buckley,Regina Caputo,Roland M. Crocker,Michaël De Becker,Roland Diehl,Chris L. Fryer,Sean Griffin,Dieter H. Hartmann,Elizabeth Hays,Pierre Jean,Martin Krause,Tim Linden,Alexandre Marcowith,Pierrick Martin,Alexander Moiseev,Uwe Oberlack,Elena Orlando,F. Panther,Nikos Prantzos,Richard E. Rothschild,Ivo R. Seitenzahl,Chris Shrader,Thomas Siegert,Andrew W. Strong,John A. Tomsick,W. Thomas Vestrand,Andreas Zoglauer

Positron Annihilation in the Galaxy

2019

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.

Keywords:

Astronomy
Galaxy
positron annihilation
Line (formation)
Positron
Physics

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