Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Iwakami, Wakana"'
Autor:
Akaho, Ryuichiro, Harada, Akira, Nagakura, Hiroki, Iwakami, Wakana, Okawa, Hirotada, Furusawa, Shun, Matsufuru, Hideo, Sumiyoshi, Kohsuke, Yamada, Shoichi
Publikováno v:
The Astrophysical Journal, 944:60 (18pp), 2023 February 10
We investigate the protoneutron star (PNS) convection using our newly developed general relativistic Boltzmann neutrino radiation-hydrodynamics code. This is a pilot study for more comprehensive investigations later. As such, we take a snapshot of a
Externí odkaz:
http://arxiv.org/abs/2206.01673
Autor:
Iwakami, Wakana, Harada, Akira, Nagakura, Hiroki, Akaho, Ryuichiro, Okawa, Hirotada, Furusawa, Shun, Matsufuru, Hideo, Sumiyoshi, Kohsuke, Yamada, Shoichi
Using full Boltzmann neutrino transport, we performed two-dimensional (2D) core-collapse supernova simulations in axisymmetry for two progenitor models with 11.2M and 15.0M both rotational and non-rotational. We employed the results obtained in the e
Externí odkaz:
http://arxiv.org/abs/2109.05846
Autor:
Akaho, Ryuichiro, Harada, Akira, Nagakura, Hiroki, Sumiyoshi, Kohsuke, Iwakami, Wakana, Okawa, Hirotada, Furusawa, Shun, Matsufuru, Hideo, Yamada, Shoichi
Publikováno v:
The Astrophysical Journal, 909:210 (17pp), 2021 March 10
We develop a neutrino transfer code for core-collapse simulations, that directly solves the multidimensional Boltzmann equations in full general relativity. We employ the discrete ordinate method, which discretizes the six dimensional phase space. Th
Externí odkaz:
http://arxiv.org/abs/2010.10780
Autor:
Iwakami, Wakana, Okawa, Hirotada, Nagakura, Hiroki, Harada, Akira, Furusawa, Shun, Sumiyoshi, Kosuke, Matsufuru, Hideo, Yamada, Shoichi
We report on the core-collapse supernova simulation we conducted for a 11.2 M progenitor model in three-dimensional space up to 20 ms after bounce, using a radiation hydrodynamics code with full Boltzmann neutrino transport. We solve the six-dimensio
Externí odkaz:
http://arxiv.org/abs/2004.02091
Autor:
Harada, Akira, Nagakura, Hiroki, Iwakami, Wakana, Okawa, Hirotada, Furusawa, Shun, Sumiyoshi, Kohsuke, Matsufuru, Hideo, Yamada, Shoichi
Using the Boltzmann-radiation-hydrodynamics code, which solves the Boltzmann equation for neutrino transport, we present the results of the simulations with the nuclear equations of state (EOSs) of Lattimer and Swesty (LS) and Furusawa and Shen (FS).
Externí odkaz:
http://arxiv.org/abs/2003.08630
Autor:
Azari, Milad Delfan, Yamada, Shoichi, Morinaga, Taiki, Nagakura, Hiroki, Furusawa, Shun, Harada, Akira, Okawa, Hirotada, Iwakami, Wakana, Sumiyoshi, Kohsuke
Publikováno v:
Phys. Rev. D 101, 023018 (2020)
Neutrinos are believed to have a key role in the explosion mechanism of core-collapse supernovae as they carry most of the energy released by the gravitational collapse of a massive star. If their flavor is converted fast inside the neutrino sphere,
Externí odkaz:
http://arxiv.org/abs/1910.06176
Autor:
Azari, Milad Delfan, Yamada, Shoichi, Morinaga, Taiki, Iwakami, Wakana, Okawa, Hirotada, Nagakura, Hiroki, Sumiyoshi, Kohsuke
Publikováno v:
Phys. Rev. D 99, 103011 (2019)
Neutrinos are densely populated deep inside the core of massive stars after their gravitational collapse to produce supernova explosions and form compact stars such as neutron stars (NS) and black holes (BH). It has been considered that they may chan
Externí odkaz:
http://arxiv.org/abs/1902.07467
Autor:
Harada, Akira, Nagakura, Hiroki, Iwakami, Wakana, Okawa, Hirotada, Furusawa, Shun, Matsufuru, Hideo, Sumiyoshi, Kohsuke, Yamada, Shoichi
Publikováno v:
ApJ, 872, 181 (2019)
With the Boltzmann-radiation-hydrodynamics code, which we have developed to solve numerically the Boltzmann equations for neutrino transfer, the Newtonian hydrodynamics equations, and the Newtonian self-gravity simultaneously and consistently, we sim
Externí odkaz:
http://arxiv.org/abs/1810.12316
Autor:
Nagakura, Hiroki, Iwakami, Wakana, Furusawa, Shun, Okawa, Hirotada, Harada, Akira, Sumiyoshi, Kohsuke, Yamada, Shoichi, Matsufuru, Hideo, Imakura, Akira
We present the first results of our spatially axisymmetric core-collapse supernova simulations with full Boltzmann neutrino transport, which amount to a time-dependent 5-dimensional (2 in space and 3 in momentum space) problem in fact. Special relati
Externí odkaz:
http://arxiv.org/abs/1702.01752
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