NASA NTRS · 19930044929
Gamma ray constraints on the Galactic supernova rate
Abstract
Most Galactic optical supernovae are hidden due to severe extinction in the disk, but could be detectable through their gamma-ray afterglow. Ti-44 is among the potentially detectable isotopes in supernova ejecta. HEAO 3 and SMM sky surveys have not detected gamma-ray lines from the decay of Ti-44, thus constraining SN rates and nucleosynthesis. We perform Monte Carlo simulations of the gamma-ray signatures of SN occurring during the last millenium to interpret the gamma-ray paucity.
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Hartmann, D., The, L.-S., Clayton, D. D., Leising, M., Mathews, G., Woosley, S. E.. 1993-01-01. Gamma ray constraints on the Galactic supernova rate. https://ntrs.nasa.gov/citations/19930044929
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