Sökning: "orbital system"

Visar resultat 16 - 20 av 84 uppsatser innehållade orden orbital system.

  1. 16. Colliding Galaxies in a (Nut)Shell

    Master-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Fysiska institutionen

    Författare :Jonathan Petersson; [2022]
    Nyckelord :shell galaxies; simulations; starbursts; quenching; mergers; Physics and Astronomy;

    Sammanfattning : Galaxy interactions and mergers are natural recurring events in the current cosmological paradigm, events that often coincide with starbursts and enhanced star formation activity. To understand why that is, one can use idealised (non-cosmological) merger simulations, which provide freedom to recreate specific tidally distorted galaxies, and analysis of the time evolution and underlying physics of the star formation activity at a high spatial resolution. LÄS MER

  3. 17. Planes of satellite galaxies

    Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :Jessica Laura Erika Kocher; [2022]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : The Planes of Satellites Problem is an open question within the field of galaxy formation. It is based on the observations that the Milky Way's satellites, as well as those around the Andromeda (M31) galaxy, align in planes. LÄS MER

  4. 18. Mission Design Considerations of the Propulsion System Demonstration as part of the Hugin Space Exploration Technology Satellite Mission

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Barkarmo Romil; [2022]
    Nyckelord :Electric propulsion system; Field Emission Electric Propulsion; Ion propulsion orbital maneuvers;

    Sammanfattning : Beyond Atlas is a Swedish private company with the goal of exploring the solar system with cheap and reliable spacecraft. Part of their maiden mission, Hugin, aims to demonstrate navigation, propulsion, and communication technology on a 3U CubeSat. LÄS MER

  5. 19. Identifying Transit Timing Variations in K2 and TESS light curves

    Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Linn Friis-Liby; [2022]
    Nyckelord :Exoplanets; TESS; K2; Transit Timing Variations;

    Sammanfattning : Aims. The aim of this work is to investigate any presence of transit timing variations (TTVs) in a sample of observed targets that has light curves in both K2 mission data and TESS mission data.  Methods. The original sample utilised here was one from the doctoral thesis of D. LÄS MER

  7. 20. Space Rider System: GNC and System Model Improvements

    Master-uppsats, KTH/Rymdteknik

    Författare :Simon Vial; [2022]
    Nyckelord :Space Rider System; Disturbance Modelling; Maneuver Optimization; Space Rider System; Modellering av Störningar; Manöveroptimering;

    Sammanfattning : As part of a continuous trend of the space sector for obtaining higher performance space science and Earth observations, there is an increasing demand for higher requirements in pointing accuracy and disturbance prediction. The Space Rider System (SRS) is a Low Earth Orbit (LEO) reusable vehicle that aims at answering to that demand. LÄS MER