Sökning: "N-body"

Visar resultat 16 - 20 av 39 uppsatser innehållade ordet N-body.

  1. 16. Stars Eating Planets

    Master-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :John Wimarsson; [2020]
    Nyckelord :Earth and planetary astrophysics; planetary dynamics; planet-planet scattering; planet consumption; Physics and Astronomy;

    Sammanfattning : In a phase of instability during the dynamical evolution of some multiple exoplanetary systems, exchange of angular momentum and/or energy through gravitational interactions between planets will lead to alterations of their orbital properties. In some cases, planetary orbits end up crossing, which leads to close encounters between two planets. LÄS MER

  3. 17. Particle Simulation using Asynchronous Compute : A Study of The Hardware

    Uppsats för yrkesexamina på avancerad nivå, Blekinge Tekniska Högskola/Institutionen för datavetenskap

    Författare :Kim Enarsson; [2020]
    Nyckelord :Asynchronous Compute; Particle Simulation; Multi-Engine; DirectX; Async Compute; Asynchronous Compute; Partikel Simulering; Multi-Engine; DirectX; Async Compute;

    Sammanfattning : Background. With the introduction of the compute shader, followed by the application programming interface (API) DirectX 12, the modern GPU is now going through a transformation. Previously the GPU was used as a massive computational tool for running a single task at unparalleled speed. LÄS MER

  4. 18. Capture of interstellar objects in the Solar system

    Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :Jonathan Petersson; [2020]
    Nyckelord :interstellar objects; Physics and Astronomy;

    Sammanfattning : Research on InterStellar Objects (ISOs) has been done for several decades, however, the first observed ISO in the Solar system was only recently discovered in 2017. It was named 1I/'Oumuamua and was only passing though the Solar system, but this may not be the case for all objects of its kind. LÄS MER

  5. 19. B-plane orbital resonance analysis and applications

    Master-uppsats, KTH/Rymdteknik

    Författare :Alessandro Masat; [2020]
    Nyckelord :;

    Sammanfattning : Many space engineering and orbital mechanics applications seek for the usage of focused mathematical models, capable of providing useful insight onto particular phenomena or exploiting some theoretical and physical tools to reduce the computational costs and/or increase the level of accuracy reached. Orbital resonances are one of the phenomena that needs to be properly modelled, both for exploiting such features in the mission design phase and to predict possible resonant returns of threatening objects closely approaching a specified planet. LÄS MER

  7. 20. Do variations in the initial mass function affect galaxy evolution?

    Master-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

    Författare :Mateo Prgomet; [2020]
    Nyckelord :galaxy; galaxy formation; galaxy evolution; feedback; star formation; ultra faint dwarf galaxy; initial mass function; variations; universe; redshift; hydrodynamics; cosmology; zoomed-in simulations Galaxy formation and evolution; galaxy feedback; stellar feedback; IMF variations; cosmological zoomed-in simulations; Physics and Astronomy;

    Sammanfattning : The initial mass function (IMF) describes the stellar mass distribution for a population of stars at birth. This parameter represents a topic of long standing discussion within astronomy due to its apparent insensitive nature to environmental conditions. However, in the last decade, significant evidence suggesting the contrary has been presented. LÄS MER