Search Results for author: Tomoya Takiwaki

Found 5 papers, 3 papers with code

Extremely energetic supernova explosions embedded in a massive circumstellar medium: the case of SN 2016aps

no code implementations24 Dec 2020 Akihiro Suzuki, Matt Nicholl, Takashi J. Moriya, Tomoya Takiwaki

We suggest that the pulsational pair-instability SNe may provide a natural explanation for the massive CSM and the energetic explosion.

High Energy Astrophysical Phenomena

Three-dimensional Hydrodynamics Simulations of Pre-collapse Shell Burning in the Si and O-rich Layers

no code implementations24 Dec 2020 Takashi Yoshida, Tomoya Takiwaki, Kei Kotake, Koh Takahashi, Ko Nakamura, Hideyuki Umeda

Our 3D results show that turbulent mixing occurs in both of the progenitors with the angle-averaged turbulent Mach number exceeding $\sim$ 0. 1 at the maximum.

Solar and Stellar Astrophysics High Energy Astrophysical Phenomena

Fast Neutrino Flavor Conversion Modes in Multidimensional Core-collapse Supernova Models: the Role of the Asymmetric Neutrino Distributions

1 code implementation5 Nov 2019 Sajad Abbar, Huaiyu Duan, Kohsuke Sumiyoshi, Tomoya Takiwaki, Maria Cristina Volpe

Although the $11. 2\mathrm{M}_{\odot}$ model features $\nu_e - \bar\nu_e$ angular crossings and the associated fast modes at different time snapshots, the $27\mathrm{M}_{\odot}$ model does not show any crossings within the decoupling region.

High Energy Astrophysical Phenomena High Energy Physics - Theory

Detectability of Collective Neutrino Oscillation Signatures in the Supernova Explosion of a 8.8 $M_\odot$ star

1 code implementation1 Jul 2019 Hirokazu Sasaki, Tomoya Takiwaki, Shio Kawagoe, Shunsaku Horiuchi, Koji Ishidoshiro

We also show that if the spectrum of $\bar{\nu}_e$ in HK becomes softer due to CNO, the spectrum of $\nu_e$ in DUNE becomes harder, and vice versa.

High Energy Astrophysical Phenomena High Energy Physics - Phenomenology

A Linear and Quadratic Time-Frequency Analysis of Gravitational Waves from Core-Collapse Supernovae

1 code implementation30 Sep 2018 Hajime Kawahara, Takami Kuroda, Tomoya Takiwaki, Kazuhiro Hayama, Kei Kotake

We demonstrate that the polarization states that randomly change with time after bounce are associated with the PNS g-mode oscillation, whereas a slowly changing polarization state in the low-frequency domain is connected to the PNS core oscillation.

High Energy Astrophysical Phenomena Instrumentation and Methods for Astrophysics General Relativity and Quantum Cosmology

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