Results 121 to 130 of about 40,993 (207)

Hydrodynamic simulations with radiative surface

, 2013
We solve the equations of radiation hydrodynamics to compute the time evolution toward one-dimensional equilibrium solutions using ageneralized Kramers opacity, κ=κ0 ρa Tb, with adjustable prefactor κ0 and exponents a and b on density ρ and temperature T, respectively.
openaire   +2 more sources

The Role of a Neutron Component in the Photospheric Emission of Long-duration Gamma-Ray Burst Jets

The Astrophysical Journal
Long-duration gamma-ray bursts (LGRBs), thought to be produced during core-collapse supernovae, may have a prominent neutron component in the outflow material.
Nathan Walker, Tyler Parsotan, Davide Lazzati   +2 more
doaj   +1 more source

Merger-driven Turbulence and Coherent Transport in the Intracluster Medium

The Astrophysical Journal
The distribution of metals and temperature in the intracluster medium (ICM) provides key insights into galaxy cluster evolution, revealing information about chemical enrichment and heating and cooling processes, respectively.
Yiwei Zhang, Xun Shi, Daisuke Nagai
doaj   +1 more source

Why Do Semianalytic Models Predict Higher Scatter in the Stellar Mass–Halo Mass Relation Than Cosmological Hydrodynamic Simulations?

The Astrophysical Journal
Semianalytic models (SAMs) systematically predict higher-stellar mass scatter at a given halo mass than hydrodynamical simulations and most empirical models. Our goal is to investigate the physical origin of this scatter by exploring modifications to the
Antonio J. Porras-Valverde, John C. Forbes, Rachel S. Somerville, Adam R. H. Stevens, Kelly Holley-Bockelmann, Andreas A. Berlind, Shy Genel   +6 more
doaj   +1 more source

Numerical Simulation of Photospheric Emission in Long Gamma-Ray Bursts: Prompt Correlations, Spectral Shapes, and Polarizations

The Astrophysical Journal
We explore the properties of photospheric emission in the context of long gamma-ray bursts (GRBs) using three numerical models that combine relativistic hydrodynamical simulations and Monte Carlo radiation transfer calculations in three dimensions.
Hirotaka Ito, Jin Matsumoto, Shigehiro Nagataki, Donald C. Warren, Maxim V. Barkov, Daisuke Yonetoku   +5 more
doaj   +1 more source

Physical Constraint Preserving Higher-order Finite Volume Schemes for Divergence-free Astrophysical MHD and RMHD

The Astrophysical Journal
Higher-order finite volume schemes for magnetohydrodynamics (MHD) and relativistic magnetohydrodynamics (RMHD) are very valuable because they allow us to carry out astrophysical simulations with very high accuracy.
Dinshaw S. Balsara, Deepak Bhoriya, Chetan Singh, Harish Kumar, Roger Käppeli, Federico Gatti   +5 more
doaj   +1 more source

Three-dimensional Interaction between a Planet and an Isothermal Gaseous Disk. III. Locally Isothermal Cases

The Astrophysical Journal
We performed linear calculations to determine the Type I planetary migration rate for 3D locally isothermal disks with radial temperature gradients. For 3D disks with radial temperature gradients, the linear wave equation has a divergent term of the ...
Hidekazu Tanaka, Kohei Okada
doaj   +1 more source

Hydrodynamic Simulation [PDF]

, 2013
openaire   +1 more source

Idealized hydrodynamical numerical model dataset with no-river runoff at the western tropical North Atlantic. [PDF]

Open Res Eur, 2023
Varona HL, Araujo J, Araujo M, Silva M.
europepmc   +1 more source

Hydrodynamic Simulations of Galaxy Formation

, 1996
This review is a short introduction to numerical hydrodynamics in a cosmological context, intended for the non specialist. The main processes relevant to galaxy formation are first presented. The fluid equations are then introduced, and their implementation in numerical codes by Eulerian grid based methods and by Smooth Particle Hydrodynamics is ...
openaire   +3 more sources