Results 31 to 40 of about 40,993 (207)

Simple Convective Accretion Flows (SCAFs): Explaining the ≈ −1 Density Scaling of Hot Accretion Flows around Compact Accretors

The Astrophysical Journal, 2023
Recent simulations find that hot gas accretion onto compact accretors is often highly turbulent and diskless, and shows a power-law density profile with slope α _ρ ≈ −1.
Wenrui Xu
doaj   +1 more source

Analysis of Galaxy Formation with Hydrodynamics [PDF]

, 1996
We present a hydrodynamical code based on the Smooth Particle Hydrodynamics technique implemented in an AP3M code aimed at solving the hydrodynamical and gravitational equations in a cosmological frame.
Abadi, M. G., Lambas, D. G., Tissera, P. B.   +2 more
core   +2 more sources

Numerical Simulations of Jets from Active Galactic Nuclei

Galaxies, 2019
Numerical simulations have been playing a crucial role in the understanding of jets from active galactic nuclei (AGN) since the advent of the first theoretical models for the inflation of giant double radio galaxies by continuous injection in the late ...
José-María Martí
doaj   +1 more source

Lattice Boltzmann simulations of liquid crystal hydrodynamics [PDF]

Physical Review E, 2001
We describe a lattice Boltzmann algorithm to simulate liquid crystal hydrodynamics. The equations of motion are written in terms of a tensor order parameter. This allows both the isotropic and the nematic phases to be considered. Backflow effects and the hydrodynamics of topological defects are naturally included in the simulations, as are viscoelastic
DENNISTON C, ORLANDINI, ENZO, YEOMANS JM
openaire   +5 more sources

A Self-gravity Module for the PLUTO Code

The Astrophysical Journal Supplement Series, 2023
We present a novel implementation of an iterative solver for the solution of Poisson’s equation in the PLUTO code for astrophysical fluid dynamics. Our solver relies on a relaxation method in which convergence is sought as the steady-state solution of a ...
Ankush Mandal, Dipanjan Mukherjee, Andrea Mignone   +2 more
doaj   +1 more source

Ring galaxies in the EAGLE hydrodynamical simulations [PDF]

Monthly Notices of the Royal Astronomical Society, 2018
We study the formation and evolution of ring galaxies in the Evolution and Assembly of GaLaxies and their Environments (EAGLE) simulations. We use the largest reference model Ref-L100N1504, a cubic cosmological volume of 100 cMpc on a side, to identify and characterize these systems through cosmic time.
Ahmed Elagali, Claudia D P Lagos, O Ivy Wong, Lister Staveley-Smith, James W Trayford, Matthieu Schaller, Tiantian Yuan, Mario G Abadi   +7 more
openaire   +6 more sources

A Universal Equation to Predict Ωm from Halo and Galaxy Catalogs

The Astrophysical Journal, 2023
We discover analytic equations that can infer the value of Ω _m from the positions and velocity moduli of halo and galaxy catalogs. The equations are derived by combining a tailored graph neural network (GNN) architecture with symbolic regression.
Helen Shao, Natalí S. M. de Santi, Francisco Villaescusa-Navarro, Romain Teyssier, Yueying Ni, Daniel Anglés-Alcázar, Shy Genel, Ulrich P. Steinwandel, Elena Hernández-Martínez, Klaus Dolag, Christopher C. Lovell, Lehman H. Garrison, Eli Visbal, Mihir Kulkarni, Lars Hernquist, Tiago Castro, Mark Vogelsberger   +16 more
doaj   +1 more source

Substructures in hydrodynamical cluster simulations

, 2009
The abundance and structure of dark matter subhalos has been analyzed extensively in recent studies of dark matter-only simulations, but comparatively little is known about the impact of baryonic physics on halo substructures.
Abadi, Agertz, Ameglio, Ameglio, Balsara, Baugh, Bonaldi, Borgani, Borgani, Borgani, Cora, De Lucia, De Lucia, Diemand, Dolag, Dolag, Dolag, Dolag, Dolag, Dunkley, Eke, Ettori, G. Murante, Gao, Ghigna, Gill, Giocoli, Gnedin, Gunn, Górski, Haardt, Iapichino, Jubelgas, K. Dolag, Kenney, Komatsu, Kravtsov, Lin, Ludlow, Macciò, McCarthy, Meneghetti, Meneghetti, Monaghan, Monaghan, Moore, Morris, Murante, Nagai, Navarro, Price, Puchwein, Puchwein, Puchwein, Rasia, Rasia, Rasia, S. Borgani, Salpeter, Saro, Saro, Sijacki, Springel, Springel, Springel, Springel, Springel, Springel, Springel, Steinmetz, Stoehr, Stoehr, Tormen, Tormen, V. Springel, Vazza, Weinberg, White, Yoshida   +78 more
core   +1 more source

The chemical enrichment of the ICM from hydrodynamical simulations [PDF]

, 2008
The study of the metal enrichment of the intra-cluster and inter-galactic media (ICM and IGM) represents a direct means to reconstruct the past history of star formation, the role of feedback processes and the gas-dynamical processes which determine the ...
A. Chieffi, A. Diaferio, A. Diaferio, A. Diaferio, A. Finoguenov, A. Gal-Yam, A. Gal-Yam, A. Maeder, A. Pipino, A. Renzini, A. Renzini, A. Renzini, A. Saro, A. Vikhlinin, A.D. Romeo, A.D. Romeo, B.J. Maughan, C. Chiappini, C. Kobayashi, C. Lia, C. Scannapieco, C.F. McKee, C.M. Raiteri, D. Fabjan, D. Kawata, D. Kawata, D. Romano, D. Sijacki, D.J. Croton, E. Roediger, E. Scannapieco, E.E. Salpeter, F. Calura, F. Mannucci, F. Matteucci, F. Matteucci, F. Matteucci, F.-K. Thielemann, G. Bertelli, G. Chabrier, G. Lucia De, G.M. Voit, I. Balestra, I.A. Bonnell, J. Plaa de, J. Plaa de, J.R. Peterson, J.S. Kaastra, K. Dolag, K. Dolag, K. Iwamoto, K. Nomoto, K. Nomoto, L. Greggio, L. Greggio, L. Portinari, L. Portinari, L. Tornatore, L. Tornatore, L.B. den Hoek van, L.R. Yungelson, M. Loewenstein, M. Nagashima, M. Sullivan, M.B. Mosconi, N. Arimoto, N. Grevesse, N. Katz, N. Werner, N. Werner, P. Kroupa, P. Kroupa, P. Marigo, P. Padoan, P. Padovani, P. Rebusco, P. Rosati, R. Valdarnini, R.B. Larson, R.F. Mushotzky, R.F. Mushotzky, R.G. Bower, R.G. Bower, R.S. Sutherland, S. Borgani, S. Borgani, S. Ettori, S. Grandi De, S. Schindler, S. Schindler, S.A. Cora, S.E. Woosley, V. Springel, V. Springel, W. Domainko, W. Kapferer, W. Kapferer, W.H. Baumgartner, Y. Fukazawa   +98 more
core   +2 more sources

Hydrodynamic Simulations of Convection [PDF]

International Astronomical Union Colloquium, 2002
Convection is one of the most problematic components of almost every model of a pulsating star. RR Lyrae stars, in particular, have a narrow convection zone at the outer layers, and a model without convection cannot get the red edge of the instability strip (see for example Kollath et al., 2000).In recent years, the common approach is to use non-local ...
openaire   +1 more source