Results 11 to 20 of about 779,528 (296)

Confirming Resonance in Three Transiting Systems

open access: yesThe Astronomical Journal, 2023
Although resonant planets have orbital periods near commensurability, resonance is also dictated by other factors, such as the planets’ eccentricities and masses, and therefore must be confirmed through a study of the system’s dynamics.
Tyler Quinn, Mariah G. MacDonald
doaj   +1 more source

Collisional Growth and Fragmentation of Dust Aggregates. II. Mass Distribution of Icy Fragments

open access: yesThe 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
doaj   +1 more source

The New Horizon Run Cosmological N-Body Simulations [PDF]

open access: yes, 2011
We present two large cosmological N-body simulations, called Horizon Run 2 (HR2) and Horizon Run 3 (HR3), made using 6000^3 = 216 billions and 7210^3 = 374 billion particles, spanning a volume of (7.200 Gpc/h)^3 and (10.815 Gpc/h)^3, respectively.
Changbom Park   +5 more
core   +1 more source

Dynamical Analysis of the Maclaurin Disk with Velocity Dispersion and Its Influence on the Formation of the Bar

open access: yesThe 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
doaj   +1 more source

Relativistic initial conditions for N-body simulations [PDF]

open access: yes, 2017
Initial conditions for (Newtonian) cosmological N-body simulations are usually set by re-scaling the present-day power spectrum obtained from linear (relativistic) Boltzmann codes to the desired initial redshift of the simulation.
Crittenden, Robert   +5 more
core   +2 more sources

N-Body Simulation on Hybrid Architectures [PDF]

open access: yes, 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
openaire   +2 more sources

Relativistic N-body simulations with massive neutrinos [PDF]

open access: yesJournal 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
openaire   +4 more sources

Constraining cosmological parameters from N-body simulations with variational Bayesian neural networks

open access: yesFrontiers 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
doaj   +1 more source

Velocity dispersion in N-body simulations of CDM models [PDF]

open access: yes, 2001
This work reports on a study of the spatially coarse-grained velocity dispersion in cosmological N-body simulations (OCDM and Lambda-CDM models) as a function of time (redshifts z=0-4) and of the coarsening length (0.6-20 Mpc/h).
Dominguez, Alvaro
core   +2 more sources

N-Body Simulations of Elliptical Galaxies [PDF]

open access: yesSymposium - 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.
openaire   +2 more sources

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