104 citations · 317 across the 4 of their papers we have counts for
8 papers
Angular Energy Distribution of Collapsar-Jets
Akira Mizuta, Miguel A. Aloy
Collapsars are fast-spinning, massive stars, whose core collapse liberates an energy, that can be channeled in the form of ultrarelativistic jets. These jets transport the energy f…
Numerical Study on GRB-Jet Formation in Collapsars
Shigehiro Nagataki, Rohta Takahashi, Akira Mizuta +1
Two-dimensional magnetohydrodynamic simulations are performed using the ZEUS-2D code to investigate the dynamics of a collapsar that generates a GRB jet, taking account of realisti…
Collimated Jet or Expanding Outflow: Possible Origins of GRBs and X-Ray Flashes
Akira Mizuta, Tatsuya Yamasaki, Shigehiro Nagataki +1
We investigate the dynamics of an injected outflow propagating in a progenitor in the context of the collapsar model for gamma-ray bursts (GRBs) through two dimensional axisymmetri…
Formation of Pillars at the Boundaries between H II Regions and Molecular Clouds
Akira Mizuta, Jave O. Kane, Marc W. Pound +3
We investigate numerically the hydrodynamic instability of an ionization front (IF) accelerating into a molecular cloud, with imposed initial perturbations of different amplitudes.…
Hydrodynamic instability of ionization fronts in HII regions
Akira Mizuta, Jave O. Kane, Marc W. Pound +3
We investigate hydrodynamic instability of accelerating ionization fronts using two dimensional hydrodynamic simulations that include detailed energy deposition and release due to…
Hydrodynamics of Internal Shocks in Relativistic Outflows
M. Kino, A. Mizuta, A. Celotti +1
We study the hydrodynamical effects of two colliding shells, adopted to model internal shocks in various relativistic outflows such as gamma-ray bursts and blazars. We find that th…