155 citations · 754 across the 16 of their papers we have counts for
12 papers · 1 filter
Detection of the 4.4-MeV gamma rays from O()O(12.97 with a water-Cherenkov detector in the supernova neutrino bursts
Makoto Sakuda, Toshio Suzuki, Mandeep Singh Reen +2
We first discuss and determine the isospin mixing of the two states (12.53 MeV and 12.97 MeV) of O nucleus using the inelastic electron scattering data. We then evalua…
Effects of nuclear matter and composition in core-collapse supernovae and long-term proto-neutron star cooling
Kohsuke Sumiyoshi, Shun Furusawa, Hiroki Nagakura +4
We study the influence of hot and dense matter in core-collapse supernovae by adopting up-to-date nuclear equation of state (EOS) based on the microscopic nuclear many-body framewo…
A New Approach to Mass and Radius of Neutron Stars with Supernova Neutrinos
Ken'ichiro Nakazato, Hideyuki Suzuki
Neutron stars are formed in core-collapse supernova explosions, where a large number of neutrinos are emitted. In this paper, supernova neutrino light curves are computed for the c…
Influence of density dependence of symmetry energy in hot and dense matter for supernova simulations
Kohsuke Sumiyoshi, Ken'ichiro Nakazato, Hideyuki Suzuki +2
We study the influence of density-dependent symmetry energy at high densities in simulations of core-collapse supernovae, black hole formation and proto-neutron star cooling by ext…
Cooling timescale for protoneutron stars and properties of nuclear matter: Effective mass and symmetry energy at high densities
Ken'ichiro Nakazato, Hideyuki Suzuki
The cooling process of a protoneutron star is investigated with focus on its sensitivity to properties of hot and dense matter. An equation of state, which includes the nucleon eff…
Heavy Nuclei as Thermal Insulation for Proto-Neutron Stars
Ken'ichiro Nakazato, Hideyuki Suzuki, Hajime Togashi
A proto-neutron star (PNS) is a newly formed compact object in a core collapse supernova. In this Letter, the neutrino emission from the cooling process of a PNS is investigated us…
Spectrum of the Supernova Relic Neutrino Background and Metallicity Evolution of Galaxies
Ken'ichiro Nakazato, Eri Mochida, Yuu Niino +1
The spectrum of the supernova relic neutrino (SRN) background from past stellar collapses including black hole formation (failed supernovae) is calculated. The redshift dependence…
New equations of state based on the liquid drop model of heavy nuclei and quantum approach to light nuclei for core-collapse supernova simulations
Shun Furusawa, Kohsuke Sumiyoshi, Shoichi Yamada +1
We construct new equations of state for baryons at sub-nuclear densities for the use in core-collapse simulations of massive stars. The abundance of various nuclei is obtained toge…
Supernova Neutrino Light Curves and Spectra for Various Progenitor Stars: From Core Collapse to Proto-neutron Star Cooling
Ken'ichiro Nakazato, Kohsuke Sumiyoshi, Hideyuki Suzuki +3
We present a new series of supernova neutrino light curves and spectra calculated by numerical simulations for a variety of progenitor stellar masses (13-50Msolar) and metallicitie…
Hyperon Matter and Black Hole Formation in Failed Supernovae
Ken'ichiro Nakazato, Shun Furusawa, Kohsuke Sumiyoshi +3
We investigate the emergence of hyperons in black-hole-forming failed supernovae, which are caused by the dynamical collapse of nonrotating massive stars. We perform neutrino-radia…
A new baryonic equation of state at sub-nuclear densities for core-collapse simulations
Shun Furusawa, Shoichi Yamada, Kohsuke Sumiyoshi +1
We calculate a new equation of state for baryons at sub-nuclear densities meant for the use in core-collapse simulations of massive stars. The abundance of various nuclei is obtain…
Exploring Hadron Physics in Black Hole Formations: a New Promising Target of Neutrino Astronomy
Ken'ichiro Nakazato, Kohsuke Sumiyoshi, Hideyuki Suzuki +1
The detection of neutrinos from massive stellar collapses can teach us a lot not only about source objects but also about microphysics working deep inside them. In this study we di…