Gamma ray constraints on the Galactic supernova rate

Details Gamma ray constraints on the Galactic supernova rate Gamma ray constraints on the Galactic supernova rate

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26as...97..219h&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 97, no. 1, p. 219, 220.

Astronomy and Astrophysics

Astrophysics

6

Gamma Ray Astronomy, Milky Way Galaxy, Nuclear Astrophysics, Supernovae, Astronomical Models, Monte Carlo Method, Stellar Mass Ejection, Titanium Isotopes

Scientific paper

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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