Production of p-nuclei in ejecta from a neutrino-driven, aspherical supernova

Shin Ichiro Fujimoto, Masaomi Ono, Masa-Aki Hashimoto, Yukihiro Kikuchi, Kei Kotake

Research output: Contribution to journalConference article

Abstract

We have examined explosive nucleosynthesis ofp-nuclei during a neutrino-driven, aspherical supernova aided by both convection and standing accretion shock instability, based on a two-dimensional hydrodynamic simulation of the explosion of a 15Mȯ star, with an explosion energy of ∼ 10 51ergs. We find thatp-nuclei are mainly produced by γ-processes, and that the nuclei lighter than 92Mo are abundantly synthesized in slightly neutron-rich bubbles with electron fractions of Ye ≤ 0.48, although masses of the bubbles are highly uncertain in the current hydrodynamic simulation. Abundances of thep-nuclei are comparable to those in a spherical model, and nuclei, 94Mo, 96Ru, and 98Ru, are underproduced compared with the solar system for our aspherical models, as in a spherical model. 138La and 180Ta, which are underproduced in the model are abundantly produced by charged current neutrino-interactions with 138Ba and 180Hf, respectively.

Original languageEnglish
JournalProceedings of Science
Publication statusPublished - Dec 1 2012
Event12th International Symposium on Nuclei in the Cosmos, NIC 2012 - Cairns, QLD, Australia
Duration: Aug 5 2012Aug 12 2012

Fingerprint

ejecta
supernovae
neutrinos
nuclei
explosions
bubbles
hydrodynamics
nuclear fusion
solar system
convection
simulation
shock
neutrons
stars
electrons
interactions
energy

All Science Journal Classification (ASJC) codes

  • General

Cite this

Fujimoto, S. I., Ono, M., Hashimoto, M-A., Kikuchi, Y., & Kotake, K. (2012). Production of p-nuclei in ejecta from a neutrino-driven, aspherical supernova. Proceedings of Science.

Production of p-nuclei in ejecta from a neutrino-driven, aspherical supernova. / Fujimoto, Shin Ichiro; Ono, Masaomi; Hashimoto, Masa-Aki; Kikuchi, Yukihiro; Kotake, Kei.

In: Proceedings of Science, 01.12.2012.

Research output: Contribution to journalConference article

Fujimoto, SI, Ono, M, Hashimoto, M-A, Kikuchi, Y & Kotake, K 2012, 'Production of p-nuclei in ejecta from a neutrino-driven, aspherical supernova', Proceedings of Science.
Fujimoto SI, Ono M, Hashimoto M-A, Kikuchi Y, Kotake K. Production of p-nuclei in ejecta from a neutrino-driven, aspherical supernova. Proceedings of Science. 2012 Dec 1.
Fujimoto, Shin Ichiro ; Ono, Masaomi ; Hashimoto, Masa-Aki ; Kikuchi, Yukihiro ; Kotake, Kei. / Production of p-nuclei in ejecta from a neutrino-driven, aspherical supernova. In: Proceedings of Science. 2012.
@article{f985597a46db4d1882468ce0ae97e313,
title = "Production of p-nuclei in ejecta from a neutrino-driven, aspherical supernova",
abstract = "We have examined explosive nucleosynthesis ofp-nuclei during a neutrino-driven, aspherical supernova aided by both convection and standing accretion shock instability, based on a two-dimensional hydrodynamic simulation of the explosion of a 15Mȯ star, with an explosion energy of ∼ 10 51ergs. We find thatp-nuclei are mainly produced by γ-processes, and that the nuclei lighter than 92Mo are abundantly synthesized in slightly neutron-rich bubbles with electron fractions of Ye ≤ 0.48, although masses of the bubbles are highly uncertain in the current hydrodynamic simulation. Abundances of thep-nuclei are comparable to those in a spherical model, and nuclei, 94Mo, 96Ru, and 98Ru, are underproduced compared with the solar system for our aspherical models, as in a spherical model. 138La and 180Ta, which are underproduced in the model are abundantly produced by charged current neutrino-interactions with 138Ba and 180Hf, respectively.",
author = "Fujimoto, {Shin Ichiro} and Masaomi Ono and Masa-Aki Hashimoto and Yukihiro Kikuchi and Kei Kotake",
year = "2012",
month = "12",
day = "1",
language = "English",
journal = "Proceedings of Science",
issn = "1824-8039",
publisher = "Sissa Medialab Srl",

}

TY - JOUR

T1 - Production of p-nuclei in ejecta from a neutrino-driven, aspherical supernova

AU - Fujimoto, Shin Ichiro

AU - Ono, Masaomi

AU - Hashimoto, Masa-Aki

AU - Kikuchi, Yukihiro

AU - Kotake, Kei

PY - 2012/12/1

Y1 - 2012/12/1

N2 - We have examined explosive nucleosynthesis ofp-nuclei during a neutrino-driven, aspherical supernova aided by both convection and standing accretion shock instability, based on a two-dimensional hydrodynamic simulation of the explosion of a 15Mȯ star, with an explosion energy of ∼ 10 51ergs. We find thatp-nuclei are mainly produced by γ-processes, and that the nuclei lighter than 92Mo are abundantly synthesized in slightly neutron-rich bubbles with electron fractions of Ye ≤ 0.48, although masses of the bubbles are highly uncertain in the current hydrodynamic simulation. Abundances of thep-nuclei are comparable to those in a spherical model, and nuclei, 94Mo, 96Ru, and 98Ru, are underproduced compared with the solar system for our aspherical models, as in a spherical model. 138La and 180Ta, which are underproduced in the model are abundantly produced by charged current neutrino-interactions with 138Ba and 180Hf, respectively.

AB - We have examined explosive nucleosynthesis ofp-nuclei during a neutrino-driven, aspherical supernova aided by both convection and standing accretion shock instability, based on a two-dimensional hydrodynamic simulation of the explosion of a 15Mȯ star, with an explosion energy of ∼ 10 51ergs. We find thatp-nuclei are mainly produced by γ-processes, and that the nuclei lighter than 92Mo are abundantly synthesized in slightly neutron-rich bubbles with electron fractions of Ye ≤ 0.48, although masses of the bubbles are highly uncertain in the current hydrodynamic simulation. Abundances of thep-nuclei are comparable to those in a spherical model, and nuclei, 94Mo, 96Ru, and 98Ru, are underproduced compared with the solar system for our aspherical models, as in a spherical model. 138La and 180Ta, which are underproduced in the model are abundantly produced by charged current neutrino-interactions with 138Ba and 180Hf, respectively.

UR - http://www.scopus.com/inward/record.url?scp=84887489739&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84887489739&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:84887489739

JO - Proceedings of Science

JF - Proceedings of Science

SN - 1824-8039

ER -