Sökning: "Giant planets"

Visar resultat 6 - 10 av 18 uppsatser innehållade orden Giant planets.

  1. 6. Effects of planetary radius contraction on scattering

    Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :Viktor Hrannar Jónsson; [2020]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : The observed high orbital eccentricities of many giant exoplanets is thought to be the result of gravitational scattering between planets. Outcomes of planet-planet scattering can result in some planets being lost by ejections into interstellar space, or collisions between planets or with the star. LÄS MER

  3. 7. 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

  4. 8. 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. 9. How did Jupiter form?

    Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :Calle Ahlgren; [2019]
    Nyckelord :Planet formation; Planet migration; Physics and Astronomy;

    Sammanfattning : Two relatively new concepts in planetary science are planetary migration; wherein the planets migrate through the protoplanetary disk as they form, and pebble accretion; wherein the planetesimals which become terrestrial planets and giant planet cores grow through the accretion of small pebbles. Planetary migration has become a generally accepted concept but there is still much to be learned even about how it affected the formation of our own solar system. LÄS MER

  7. 10. Dynamics of a high-eccentricity planet in a large planetesimal disc

    Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :Martin Schmidt Montelius; [2019]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : Clustering of orbital characteristics for distant Solar System objects has been proposed to indicate the presence of a ninth planet. Simulations show that the planets orbit would have to have a mass of 5–10 Solar masses, a semi-major axis of 400–800 AU, an eccentricity of 0.2–0.5 and an inclination of 15–25°. LÄS MER