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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…
A systematic study of carbon-oxygen white dwarf mergers: mass combinations for Type Ia supernovae
Yushi Sato, Naohito Nakasato, Ataru Tanikawa +3
Mergers of two carbon-oxygen (CO) white dwarfs (WDs) have been considered as progenitors of Type Ia supernovae (SNe Ia). Based on smoothed particle hydrodynamics (SPH) simulations,…
Hydrodynamical evolution of merging carbon-oxygen white dwarfs: their pre-supernova structure and observational counterparts
Ataru Tanikawa, Naohito Nakasato, Yushi Sato +3
We perform smoothed particle hydrodynamics (SPH) simulations for merging binary carbon-oxygen (CO) white dwarfs (WDs) with masses of and , until the merger rem…