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Supernovae and Positron Annihilation
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Radioactive nuclei, especially those created in SN explosion, have long been suggested to be important contributors of galactic positrons. In this paper we describe the findings of three independent OSSE/SMM/TGRS studies of positron annihilation radiation, demonstrating that the three studies are largely in agreement as to the distribution of galactic annihilation radiation. We then assess the predicted yields and distributions of SN-synthesized radionuclei, determining that they are marginally compatible with the findings of the annihilation radiation studies.
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Cited by 1 Pith paper
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Novel Signals from Neutron Star Mergers at 511 keV
Neutron star merger ejecta can emit enough positrons to explain the Galactic Center 511 keV line, linking r-process nucleosynthesis to gamma-ray observations.
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