Production of 44Ti in neutrino-driven aspherical supernova explosions
- 1. Kumamoto National College of Technology, 2659-2 Suya, Goshi 861-1102 (Japan)
- 2. Department of Physics, School of Sciences, Kyushu University, Fukuoka 810-8560 (Japan)
- 3. National Astronomical Observatory Japan, 2-21-1, Osawa, Mitaka, Tokyo, 181-8588 (Japan)
Description
We examine the synthesis of 44Ti in a neutrino-driven aspherical supernova (SN), focusing on reaction rates related to 44Ti and rotation of a progenitor. We have performed 2D hydrodynamic simulations of SN of a 15M⊙ progenitor, whose angular velocity is manually set to be a cylindrical distribution and have followed explosive nucleosynthesis in the ejecta. We find that the faster rates of 40Ca(α,γ)44Ti and the slower rate of 44Ti(α,p)47V lead to more massive ejection of 44Ti and 56Ni and larger ratios <44Ti/56Ni>. Faster rotation also results in more massive ejection of 44Ti and 56Ni. Ratios <44Ti/56Ni> are however independent from rotation. Large masses of 44Ti and large ratios observed in SN 1987A and Cas A (> 1O−4M⊙ and 1-2 respectively) are not realized in all the models
Additional details
Identifiers
- DOI
- 10.1063/1.4874085;
Publishing Information
- Journal Title
- AIP Conference Proceedings
- Journal Volume
- 1594
- Journal Issue
- 1
- Journal Page Range
- p. 296-300
- ISSN
- 0094-243X
- CODEN
- APCPCS
Conference
- Title
- 12. international symposium on origin of matter and evolution of galaxies
- Acronym
- OMEG12
- Dates
- 18-21 Nov 2013
- Place
- Tsukuba (Japan)
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 45101832
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ALPHA REACTIONS; ANGULAR VELOCITY; ASTROPHYSICS; CALCIUM 40 TARGET; COMPUTERIZED SIMULATION; COSMIC NEUTRINOS; COSMOLOGY; NICKEL 56; NUCLEAR REACTION KINETICS; NUCLEOSYNTHESIS; ROTATION; TITANIUM 44; TITANIUM 44 TARGET; VANADIUM 47
- Descriptors DEC
- BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; CHARGED-PARTICLE REACTIONS; COSMIC RADIATION; DAYS LIVING RADIOISOTOPES; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTARY PARTICLES; EVEN-EVEN NUCLEI; FERMIONS; INTERMEDIATE MASS NUCLEI; IONIZING RADIATIONS; ISOTOPES; KINETICS; LEPTONS; MASSLESS PARTICLES; MINUTES LIVING RADIOISOTOPES; MOTION; NEUTRINOS; NICKEL ISOTOPES; NUCLEAR REACTIONS; NUCLEI; ODD-EVEN NUCLEI; PHYSICS; RADIATIONS; RADIOISOTOPES; REACTION KINETICS; SIMULATION; SYNTHESIS; TARGETS; TITANIUM ISOTOPES; VANADIUM ISOTOPES; VELOCITY; YEARS LIVING RADIOISOTOPES
Optional Information
- Notes
- (c) 2014 AIP Publishing LLC