Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"n-body simulation"”.
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Automating runtime optimizations for parallel object-oriented programming
… using real applications, including an N-body simulation program, a program from the NAS benchmark suite, and several other programs.
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Star Clusters and Dark Matter as Probes of the Spacetime Geometry of Massive Black Holes
… theorems. Our results are in agreement with N-body simulation results.</p><p>In the second part, we develop a fully general relativistic phase-space formulation to consider the effects of the Galactic center supermassive black hole Sgr A* on the dark-matter density profile and its applications …
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Cosmology from galaxy clusters with cosmic microwave background lensing mass calibration
… with mock observations from an N-body simulation. We then perform a joint likelihood analysis of the cluster counts and mass observables taking as input the CMB lensing signal-to-noise ratios, SZ signal-to-noise ratios, and redshifts. Our analysis uses a likelihood that properly …
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Data parallelism with hierarchically tiled objects
… solver for banded linear systems called SPIKE, n-body simulation, clustering, and discrete optimization. The evaluation shows that these programs can be elegantly expressed by the programming model, and that the model's applicability is not limited to computations based on dense arrays. …
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A self contamination model for the formation of globular star clusters
… on the model is also investigated using an N-body simulation.
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A self-contamination model for the formation of globular star clusters
… on the model is also investigated using an N-body simulation.
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The Nature of Emission-Line Galaxies in Hierarchical Cosmologies
… combining a semianalytical model with a large N-body simulation we predict the clustering of Ly-alpha emitters. With increasing redshift, Ly-alpha emitters are found to trace progressively rarer, higher density regions of the Universe. We measure the clustering of Ly-alpha emitters by …
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Accreted Globular Clusters in External Galaxies: Why Adaptive Dynamics won’t work
… investigates - by means of the Auriga galaxy simulations and in anticipation of high-resolution IFU data of external galaxies - whether a novel action-based approach could provide a constraint for an axisymmetric approximation of the gravitational potential. In an axisymmetric potential, …
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The Impact of Peculiar Velocities on Supernova Cosmology
… catalogues constructed from the Millennium Simulation, the largest dark matter N-body simulation run to date. Supernovae are assigned to the galaxies in the mock survey data according to supernova rates that define the probability of a supernova occurring in a given time. The rates are based …
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Extreme Stellar Populations in the Universe: Backsplash Dwarf Galaxies and Wandering Stars
… dark matter haloes in the Via Lactea II (VLII) simulation with known orbital histories. Analysis of VLII provides expectations for this escaped population: they contribute 13 per cent of the galactic population between 300 and 1500 kpc from the Milky Way, and hence we anticipate that about 7 of …
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Chemo-kinematic constraints on Milky Way models from the spectroscopic surveys SEGUE & RAVE
… Way. In addition analytic models and numerical simulations of the Milky Way provide necessary descriptions and predictions suited for comparison with observations in order to decode the physical properties that underlie the complex system of the Galaxy. In the thesis various approaches are taken …
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EXOCOMETS AT LARGE ORBITAL RADII AND THEIR INWARD TRANSPORT IN DEBRIS DISCS
… third and fourth I compare the observations with simulations, which I use to set constraints on the underlying planetesimal distribution and mass and orbital distance of unseen planets. Finally, in Chapter 6 I present result obtained from N-body simulations to study the process of inward transport …
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GALAXY-HALO CONNECTION AND CLUSTERING IN THE PRESENCE OF DYNAMICAL DARK ENERGY AND MASSIVE NEUTRINOS
… model. To this aim a large set of cosmological N-body simulations has been used, the so-called “Dark Energy and Massive Neutrino Universe” (DEMNUni) project, spanning several cosmological models with different neutrino masses and/or different equations of state of dynamical dark energy. The author …