Results 11 to 20 of about 40,993 (207)
Machine Learning and Cosmological Simulations II: Hydrodynamical Simulations [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 We extend a machine learning (ML) framework presented previously to model galaxy formation and evolution in a hierarchical universe using N-body + hydrodynamical simulations.
Brunner, Robert J. +2 more
core +2 more sources
Inhomogeneous Reionization Models in Cosmological Hydrodynamical Simulations [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 In this work we present a new hybrid method to simulate the thermal effects of the reionization in cosmological hydrodynamical simulations. The method improves upon the standard approach used in simulations of the intergalactic medium (IGM) and galaxy ...
Davies, F. B. +4 more
core +4 more sources
Chemical enrichment of galaxy clusters from hydrodynamical simulations
Monthly Notices of the Royal Astronomical Society, 2007 We present cosmological hydrodynamical simulations of galaxy clusters aimed at studying the process of metal enrichment of the intra--cluster medium (ICM).
Arimoto +102 more
core +4 more sources
Implications of hydrodynamical simulations for the interpretation of direct dark matter searches
International Journal of Modern Physics A, 2017 In recent years, realistic hydrodynamical simulations of galaxies like the Milky Way have become available, enabling a reliable estimate of the dark matter density and velocity distribution in the Solar neighborhood.
Bertone, Gianfranco, Bozorgnia, Nassim
core +3 more sources
Low-surface-brightness Galaxies are Missing in the Observed Stellar Mass Function
The Astrophysical Journal, 2023 We investigate the impact of the surface-brightness (SB) limit on the galaxy stellar mass functions (GSMFs) using galaxy catalogs generated from the Horizon Run 5 ( HR5 ) simulation.
Juhan Kim +10 more
doaj +1 more source
Simulating self-gravitating hydrodynamic flows [PDF]
Computer Physics Communications, 1995 An efficient algorithm for solving Poisson's equation in two and three spatial dimensions is discussed. The algorithm, which is described in detail, is based on the integral form of Poisson's equation and utilizes spherical coordinates and an expansion into spherical harmonics.
Müller, Ewald, Steinmetz, Matthias
openaire +2 more sources
Hydrodynamic simulations with the Godunov smoothed particle hydrodynamics [PDF]
Monthly Notices of the Royal Astronomical Society, 2011 We present results based on an implementation of the Godunov smoothed particle hydrodynamics (GSPH), originally developed by Inutsuka, in the gadget-3 hydrodynamic code. We first review the derivation of the GSPH discretization of the equations of moment and energy conservation, starting from the convolution of these equations with the interpolating ...
Murante G. +3 more
openaire +4 more sources
Mesoscale simulations of hydrodynamic squirmer interactions [PDF]
Physical Review E, 2010 The swimming behavior of self-propelled microorganisms is studied by particle-based mesoscale simulations. The simulation technique includes both hydrodynamics and thermal fluctuations that are both essential for the dynamics of microswimmers. The swimmers are modeled as squirmers, i.e., spherical objects with a prescribed tangential surface velocity ...
Götze, I., Gompper, G.
openaire +3 more sources
The Mass Fractionation of Helium in the Escaping Atmosphere of HD 209458b
The Astrophysical Journal, 2023 The absorption signals of metastable He in HD 209458b and several other exoplanets can be explained via an escaping atmosphere model with a subsolar He/H ratio. The low abundance of helium can be a result of planet formation if there is a small amount of
Lei Xing, Dongdong Yan, Jianheng Guo
doaj +1 more source
Hydrodynamic Drag in Cosmological Simulations
The Astrophysical Journal, 2001 35 pages including 3 tables and 9 figures. Submitted to MNRAS.
Tittley, Eric R. +2 more
openaire +2 more sources