Results 11 to 20 of about 132,744 (266)
N-body simulations for parametrized modified gravity [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT We present MG-evolution, an N-body code simulating the cosmological structure formation for parametrized modifications of gravity. It is built from the combination of parametrized linear theory with a parametrization of the deeply non-linear cosmological regime extrapolated from modified spherical collapse computations that ...
Farbod Hassani, Lucas Lombriser
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Collisional Growth and Fragmentation of Dust Aggregates. II. Mass Distribution of Icy Fragments
The Astrophysical Journal, 2023 By performing N -body simulations, we investigated the fundamental processes of collisions between dust aggregates composed of submicron-sized icy dust monomers.
Yukihiko Hasegawa +4 more
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The Astrophysical Journal, 2023 We investigate the influence of Toomre’s Q parameter on the bar-forming dynamics of the Maclaurin disk using N -body simulations. According to Toomre’s criterion, the local velocity dispersion parametrized by Q ≥ 1 is required to suppress the local ...
T. Worrakitpoonpon
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N-Body Simulation on Hybrid Architectures [PDF]
, 2001 N-body codes are routinely used for simulation studies of physical systems, e.g. in the fields of computational astrophysics and molecular dynamics. Typically, they require only a moderate amount of run-time memory, but are very demanding in computational power.
Sloot, P.M.A. +2 more
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Relativistic N-body simulations with massive neutrinos [PDF]
Journal of Cosmology and Astroparticle Physics, 2017 26 pages + appendix, 17 figures; v2: minor revision, published version; code available at https://github.com/gevolution-code/gevolution-1 ...
Adamek, Julian +2 more
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Frontiers in Astronomy and Space Sciences, 2023 Introduction: Methods based on deep learning have recently been applied to recover astrophysical parameters, thanks to the ability of these techniques to capture information from complex data.
Héctor J. Hortúa +3 more
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N-Body Simulations of Elliptical Galaxies [PDF]
Symposium - International Astronomical Union, 1987 N-body simulations are a useful tool for constructing equilibrium models of elliptical galaxies and for the exploration of their kinematical properties, in particular the tumbling rate of the figure about some axis and the internal streaming. As yet little is known about these, except that there is a large variety of possible equilibrium models.
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Revisiting Vainshtein screening for fast N-body simulations
Journal of Cosmology and Astroparticle Physics, 2023 AbstractWe revisit a method to incorporate the Vainshtein screening mechanism inN-body simulations proposed by R. Scoccimarro in [1]. We further extend this method to cover a subset of Horndeski theories that evade the bound on the speed of gravitational waves set by the binary neutron star merger GW170817.
Brando, Guilherme +2 more
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N-body Simulations of Galaxy Formation [PDF]
Symposium - International Astronomical Union, 1988 Modern N-body techniques allow the study of galaxy formation in the wider context of the formation of large-scale structure in the Universe. The results of such a study within the cold dark matter cosmogony are described. Dark galactic halos form at relatively recent epochs.
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The BEHOMO project: $Λ$LTB $N$-body simulations
arXiv.org, 2022 Our Universe may feature large-scale inhomogeneities and anisotropies which cannot be explained by the standard model of cosmology, that is, the homogeneous and isotropic FLRW metric, on which the $Λ$CDM model is built, may not describe accurately observations.
Marra, V. +4 more
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