280 citations · 3.8k across the 90 of their papers we have counts for
90 papers
A Dual-Resolution Prescription in the Method for Boltzmann Neutrino Transport I: Proof of Principle and the Resolution of Collision Term
Akira Ito, Ryuichiro Akaho, Hiroki Nagakura +1
We propose a dual-resolution prescription meant for the Boltzmann neutrino transport, in which the advection and collision terms are calculated with different angular resolutions i…
Comparative Testing of Subgrid Models for Fast Neutrino Flavor Conversions in Core-collapse Supernova Simulations
Ryuichiro Akaho, Hiroki Nagakura, Shoichi Yamada
We investigate key methodologies of Bhatnagar-Gross-Krook subgrid modeling for neutrino fast flavor conversions (FFC) in core-collapse supernova based on spherically symmetric Bolt…
Asymmetric emissions of neutrinos in the cooling of rotating proto-neutron stars
Laura Barrio, Kotaro Fujisawa, Ryuichiro Akaho +2
We evaluate global asymmetry in the luminosities of neutrinos emitted from rapidly-rotating proto-neutron stars (PNS's). We build axisymmetric models of PNS's in mechanical equilib…
Core-collapse supernova explosions hindered by eV-mass sterile neutrinos
Kanji Mori, Tomoya Takiwaki, Kazunori Kohri +1
Light sterile neutrinos, , are often introduced to explain an anomalous deficit in the electron antineutrino flux from nuclear reactors. If they exist, sterile neutrinos would…
Quasi-steady evolution of fast neutrino-flavor conversions
Jiabao Liu, Hiroki Nagakura, Masamichi Zaizen +3
In astrophysical environments such as core-collapse supernovae (CCSNe) and binary neutron star mergers (BNSMs), neutrinos potentially experience substantial flavor mixing due to th…
Neutron star kicks plus rockets as a mechanism for forming wide low-eccentricity neutron star binaries
Ryosuke Hirai, Philipp Podsiadlowski, Alexander Heger +1
Recent neutron star surface observations corroborate a long-standing theory that neutron stars may be accelerated over extended periods after their birth. We analyze how these prol…