Production of 44Ti in neutrino-driven aspherical supernova explosions

Shin Ichiro Fujimoto; Masaomi Ono; Masa Aki Hashimoto; Kei Kotake

doi:10.1063/1.4874085

Production of ⁴⁴Ti in neutrino-driven aspherical supernova explosions

Shin Ichiro Fujimoto, Masaomi Ono, Masa Aki Hashimoto, Kei Kotake

Experimental Particle Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

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 <Ti/56Ni> observed in SN 1987A and Cas A (> 1O^-4M _⊙ and 1-2 respectively) are not realized in all the models.

Original language	English
Title of host publication	Origin of Matter and Evolution of Galaxies 2013 - Proceedings of the 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013
Publisher	American Institute of Physics Inc.
Pages	296-300
Number of pages	5
ISBN (Print)	9780735412286
DOIs	https://doi.org/10.1063/1.4874085
Publication status	Published - 2014
Event	12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013 - Tsukuba, Japan Duration: Nov 18 2013 → Nov 21 2013

Publication series

Name	AIP Conference Proceedings
Volume	1594
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013
Country/Territory	Japan
City	Tsukuba
Period	11/18/13 → 11/21/13

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

Access to Document

10.1063/1.4874085

Cite this

Fujimoto, S. I., Ono, M., Hashimoto, M. A., & Kotake, K. (2014). Production of ⁴⁴Ti in neutrino-driven aspherical supernova explosions. In Origin of Matter and Evolution of Galaxies 2013 - Proceedings of the 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013 (pp. 296-300). (AIP Conference Proceedings; Vol. 1594). American Institute of Physics Inc.. https://doi.org/10.1063/1.4874085

Production of ⁴⁴Ti in neutrino-driven aspherical supernova explosions. / Fujimoto, Shin Ichiro; Ono, Masaomi; Hashimoto, Masa Aki et al.
Origin of Matter and Evolution of Galaxies 2013 - Proceedings of the 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013. American Institute of Physics Inc., 2014. p. 296-300 (AIP Conference Proceedings; Vol. 1594).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Fujimoto, SI, Ono, M, Hashimoto, MA & Kotake, K 2014, Production of ⁴⁴Ti in neutrino-driven aspherical supernova explosions. in Origin of Matter and Evolution of Galaxies 2013 - Proceedings of the 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013. AIP Conference Proceedings, vol. 1594, American Institute of Physics Inc., pp. 296-300, 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013, Tsukuba, Japan, 11/18/13. https://doi.org/10.1063/1.4874085

Fujimoto SI, Ono M, Hashimoto MA, Kotake K. Production of ⁴⁴Ti in neutrino-driven aspherical supernova explosions. In Origin of Matter and Evolution of Galaxies 2013 - Proceedings of the 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013. American Institute of Physics Inc. 2014. p. 296-300. (AIP Conference Proceedings). doi: 10.1063/1.4874085

Fujimoto, Shin Ichiro ; Ono, Masaomi ; Hashimoto, Masa Aki et al. / Production of ⁴⁴Ti in neutrino-driven aspherical supernova explosions. Origin of Matter and Evolution of Galaxies 2013 - Proceedings of the 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013. American Institute of Physics Inc., 2014. pp. 296-300 (AIP Conference Proceedings).

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abstract = "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 <Ti/56Ni> observed in SN 1987A and Cas A (> 1O-4M ⊙ and 1-2 respectively) are not realized in all the models.",

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AB - 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 <Ti/56Ni> observed in SN 1987A and Cas A (> 1O-4M ⊙ and 1-2 respectively) are not realized in all the models.

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