Production of 92Nb, 92Mo, and 146Sm in the gamma-process in SNIa
T. Rauscher (1,2,3), C. Travaglio (4), R. Gallino (5), N. Nishimura, (3,6), R. Hirschi (3,6,7) ((1) U Hertfordshire, UK, (2) U Basel, Switzerland,, (3) UK Network for Bridging Disciplines of Galactic Chemical Evolution, (BRIDGCE), (4) INAF-Astrophysical Observatory Turin, Italy
TL;DR
This paper investigates the production of specific extinct radioisotopes like 92Nb, 92Mo, and 146Sm during the gamma-process in Type Ia supernovae, highlighting nuclear uncertainties and implications for meteoritic and galactic chemical evolution.
Contribution
It provides new insights into the synthesis of these radioisotopes in SNIa, emphasizing the role of nuclear uncertainties in modeling their production.
Findings
Production ratios constrain galactic chemical evolution models.
Nuclear uncertainties significantly affect predicted isotope abundances.
Results inform interpretations of meteoritic isotope ratios.
Abstract
The knowledge of the production of extinct radioactivities like 92Nb and 146Sm by photodisintegration processes in ccSN and SNIa models is essential for interpreting abundances in meteoritic material and for Galactic Chemical Evolution (GCE). The 92Mo/92Nb and 146Sm/144Sm ratios provide constraints for GCE and production sites. We present results for SNIa with emphasis on nuclear uncertainties.
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Taxonomy
TopicsNuclear physics research studies · Nuclear Physics and Applications · Astro and Planetary Science