321 citations · 1.1k across the 23 of their papers we have counts for
23 papers
Evaluation of POSIT Arithmetic with Accelerators
Naohito Nakasato, Yuki Murakami, Fumiya Kono +1
We present an evaluation of 32-bit POSIT arithmetic through its implementation as accelerators on FPGAs and GPUs. POSIT, a floating-point number format, adaptively changes the size…
Accelerating 128-bit Floating-Point Matrix Multiplication on FPGAs
Fumiya Kono, Naohito Nakasato, Maho Nakata
General Matrix Multiplication (GEMM) is a fundamental operation widely used in scientific computations. Its performance and accuracy significantly impact the performance and accura…
Double-Detonation Models for Type Ia Supernovae: Trigger of Detonation in Companion White Dwarfs and Signatures of Companions' Stripped-off Materials
Ataru Tanikawa, Ken'ichi Nomoto, Naohito Nakasato +1
We have studied double-detonation explosions in double-degenerate (DD) systems with different companion white dwarfs (WD) for modeling type Ia supernovae (SNe Ia) by means of high-…
Three-Dimensional Simulation of Double-Detonations in the Double-Degenerate Model for Type Ia Supernovae and Interaction of Ejecta with a Surviving White Dwarf Companion
Ataru Tanikawa, Ken'ichi Nomoto, Naohito Nakasato
We study the hydrodynamics and nucleosynthesis in the double-detonation model of Type Ia supernovae (SNe~Ia) and the interaction between the ejecta and a surviving white dwarf (WD)…
Does Explosive Nuclear Burning occur in Tidal Disruption Events of White Dwarfs by Intermediate Mass Black Holes ?
Ataru Tanikawa, Yushi Sato, Ken'ichi Nomoto +3
We investigate nucleosynthesis in tidal disruption events (TDEs) of white dwarfs (WDs) by intermediate mass black holes (IMBHs). We consider various types of WDs with different mas…
The critical mass ratio of double white dwarf binaries for violent merger-induced Type Ia supernova explosions
Yushi Sato, Naohito Nakasato, Ataru Tanikawa +3
Mergers of carbon-oxygen (CO) white dwarfs (WDs) are considered as one of the potential progenitors of type Ia supernovae (SNe Ia). Recent hydrodynamical simulations showed that th…