81 citations · 330 across the 15 of their papers we have counts for
15 papers
Explosive nucleosynthesis with fast neutrino-flavor conversion in core-collapse supernovae
Shin-ichiro Fujimoto, Hiroki Nagakura
Fast neutrino-flavor conversion (FFC) is a possible game-changing ingredient in core-collapse supernova (CCSN) theory. In this paper, we examine the impact of FFC on explosive nucl…
Gamma-ray Diagnostics of r-process Nucleosynthesis in the Remnants of Galactic Binary Neutron-Star Mergers
Yukikatsu Terada, Yuya Miwa, Hayato Ohsumi +4
We perform a full nuclear-network numerical calculation of the -process nuclei in binary neutron-star mergers (NSMs), with the aim of estimating -ray emissions from the remna…
Possible Detection of X-Ray Emitting Circumstellar Material in the Synchrotron-Dominated Supernova Remnant RX J 1713.7-3946
Dai Tateishi, Satoru Katsuda, Yukikatsu Terada +4
We report on a discovery of an X-ray emitting circumstellar material knot inside the synchrotron dominant supernova remnant (SNR) RX J1713.7-3946. This knot was previously thought…
The impact of asymmetric neutrino emissions on nucleosynthesis in core-collapse supernovae II -- progenitor dependences --
Shin-ichiro Fujimoto, Hiroki Nagakura
We investigate the impact of asymmetric neutrino-emissions on explosive nucleosynthesis in core-collapse supernovae (CCSNe) of progenitors with a mass range of 9.5 to 25…
The impact of isomers on a kilonova associated with neutron star mergers
Shin-ichiro Fujimoto, Masa-aki Hashimoto
We investigate the significance of isomers on a kilonova associated with neutron star mergers (NSMs) for the first time. We calculate the evolution of abundances and energy generat…
The impact of asymmetric neutrino emissions on nucleosynthesis in core-collapse supernovae
Shin-ichiro Fujimoto, Hiroki Nagakura
We investigate the impact of asymmetric neutrino emissions on the explosive nucleosynthesis in neutrino-driven core-collapse supernovae (CCSNe). We find that the asymmetric emissio…
Constraint on Heavy Element Production in Inhomogeneous Big-Bang Nucleosynthesis from The Light-Element Observations
Riou Nakamura, Masa-aki Mashimoto, Shin-ichiro Fujimoto +1
We investigate the observational constraints on the inhomogeneous big-bang nucleosynthesis that Matsuura et al. suggested the possibility of the heavy element production beyond ${}…
Post-shock-revival evolutions in the neutrino-heating mechanism of core-collapse supernovae
Yu Yamamoto, Shin-ichiro Fujimoto, Hiroki Nagakura +1
We perform some experimental simulations in spherical symmetry and axisymmetry to understand the post-shock-revival evolution of core-collapse supernovae. Assuming that the stalled…
Multimessengers from core-collapse supernovae: multidimensionality as a key to bridge theory and observation
Kei Kotake, Tomoya Takiwaki, Yudai Suwa +4
Core-collapse supernovae are dramatic explosions marking the catastrophic end of massive stars. The only means to get direct information about the supernova engine is from observat…
Explosive Nucleosynthesis in Magnetohydrodynamical Jets from Collapsars II. Heavy-Element Nucleosynthesis of s, r, p-Processes
Masaomi Ono, Masa-aki Hashimoto, Shin-ichiro Fujimoto +2
We investigate the nucleosynthesis in a massive star of 70 M_solar with solar metallicity in the main sequence stage. The helium core mass after hydrogen burning corresponds to 32…
Effects of a New Triple-α Reaction on the S-process in Massive Stars
Yukihiro Kikuchi, Masaomi Ono, Yasuhide Matsuo +2
Effects of a new triple-α reaction rate on the s-process during the evolution of a massive star of 25 M\odot are investigated for the first time. Although the s-process in massive…
Explosive nucleosynthesis in the neutrino-driven aspherical supernova explosion of a non-rotating 15 star with solar metallicity
Shin-ichiro Fujimoto, Kei Kotake, Masa-aki Hashimoto +2
We investigate explosive nucleosynthesis in a non-rotating 15 star with solar metallicity that explodes by a neutrino-heating supernova (SN) mechanism aided by both standi…
Observational Constraint on Heavy Element Production in Inhomogeneous Big Bang Nucleosynthesis
Riou Nakamura, Masa-aki Hashimoto, Shin-ichiro Fujimoto +2
Based on a scenario of the inhomogeneous big-bang nucleosynthesis (IBBN), we investigate the detailed nucleosynthesis that includes the production of heavy elements beyond Li-7. Fr…
Nucleosynthesis in Magnetically Driven Jets from Collapsars
Shin-ichiro Fujimoto, Nobuya Nishimura, Masa-aki Hashimoto
We have made detailed calculations of the composition of magnetically driven jets ejected from collapsars, or rapidly rotating massive stars, based on long-term magnetohydrodynamic…
Lithium production on a low-mass secondary in a black hole soft X-ray transient
Shin-ichiro Fujimoto, Ryuichi Matsuba, Kenzo Arai
We examine production of Li on the surface of a low-mass secondary in a black hole soft X-ray transient (BHSXT) through the spallation of CNO nuclei by neutrons which are ejected f…