Results 31 to 40 of about 17,955,789 (263)
Journal of Computational and Applied Mathematics, 1999 32 pages, 13 figures, in press in Riffert, H., Werner K. (eds), Computational Astrophysics, The Journal of Computational and Applied Mathematics (JCAM), Elsevier Press, Amsterdam ...
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Are long-term N-body simulations reliable? [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT N-body integrations are used to model a wide range of astrophysical dynamics, but they suffer from errors which make their orbits diverge exponentially in time from the correct orbits. Over long time-scales, their reliability needs to be established. We address this reliability by running a three-body planetary system over about
Junichiro Makino +2 more
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Confirming Resonance in Three Transiting Systems
The 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
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Dual Hierarchy for Gravitational n-body
, 2023 The n-body problem is the simulation of pair-wise interactions between n objects. This problem appears in many forms, with the classic example being the modeling of gravitational forces between point masses, necessary for cosmological simulations.
Campolattaro, Jackson (author)
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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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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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On Parallel and Distributed N-Body Simulations
MathematicsThe N-body problem is a classic problem involving a system of N discrete bodies mutually interacting in a dynamical system. At any moment in time there are N(N−1)/2 such interactions occurring.
Alexander Brandt
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The generation of vorticity in cosmological N-body simulations [PDF]
Journal of Cosmology and Astroparticle Physics, 2018 Clustering of a perfect fluid does not lead to the generation of vorticity. It is the collisionless nature of dark matter, inducing velocity dispersion and shell crossing, which is at the origin of cosmological vorticity generation. In this paper we investigate the generation of vorticity during the formation of cosmological large scale structure using
Jelic-Cizmek, Goran +3 more
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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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N-Body Simulations and the Value of Ω [PDF]
Symposium - International Astronomical Union, 1978 We have recently completed a series of N-body simulations of galaxy clustering in an expanding universe (Aarseth, Gott and Turner 1977). the initial conditions and our results concerning galaxy clustering will be summarized by Sverre Aarseth at this meeting.
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