Sökning: "planet formation"

Visar resultat 1 - 5 av 34 uppsatser innehållade orden planet formation.

  1. 1. High resolution imaging observations of exoplanet host stars

    Kandidat-uppsats, Lunds universitet/Astronomi

    Författare :Kaltrina Kajtazi; [2020]
    Nyckelord :Speckle imaging; Speckle interferometry; High resolution imaging; Short integration time; Binaries; Exoplant hosts; Stellar properties; WIYN; Gemini; Orbital period; Physical separation; Angular separation; magnitude difference; Physics and Astronomy;

    Sammanfattning : This is a thesis project, analysing data from high-resolution imaging observations, specifically speckle imaging, as a follow up study of exoplanet host stars observed with K2, the second operational phase of the space telescope Kepler. The project was accomplished at NASA Ames research center under the guidance of Rachel A. LÄS MER

  2. 2. How did Jupiter form?

    Kandidat-uppsats, Lunds universitet/Astronomi

    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

  3. 3. The quality of institutions and economic growth in Africa? : An empirical analysis of the relationship between quality of institutions and economic growth in Africa

    Kandidat-uppsats, Södertörns högskola/Institutionen för samhällsvetenskaper; Södertörns högskola/Institutionen för samhällsvetenskaper

    Författare :Semhar Ghebresus; Sauda Luzze; [2019]
    Nyckelord :Institutional Quality; Economic Growth; Panel Data Analysis; Africa;

    Sammanfattning : Africa is one of the richest continents on the planet in terms of natural resources, but has the highest poverty rate, fastest growing population and includes many of the world ́s most corrupt countries. There is an ongoing discussion if the quality of institutions affects economic growth, and the applicability of economic institutional theory to the African continent. LÄS MER

  4. 4. Gone With the Headwind. Characterizing Erosion Using Lattice-Boltzmann Method : and its Implication in Planet Formation

    Master-uppsats, Stockholms universitet/Fysikum

    Författare :Lukas Cedenblad; [2019]
    Nyckelord :Erosion; Planet formation; Lattice-Boltzmann;

    Sammanfattning : Erosion has a long history in science and is used in many different fields today, for example in geology for coastal erosion and in the oil industry for pipe erosion. It is very difficult to study erosion both analytically. Numerically it is difficult due to moving and shape-changing boundaries. LÄS MER

  5. 5. For the People, for the Planet: How Social Entrepreneurs in the Global South and Facilitators from the Global North Construct Legitimacy for the Field of Social Entrepreneurship

    D-uppsats, Handelshögskolan i Stockholm/Institutionen för företagande och ledning; Handelshögskolan i Stockholm/Institutionen för marknadsföring och strategi

    Författare :Eva Katzer; [2019]
    Nyckelord :Social Entrepreneurship; Legitimacy; Discursive Institutionalism; Global South; Sub-Saharan Africa;

    Sammanfattning : In efforts to leverage private sector approaches for achieving the Sustainable Development Goals (SDGs), social entrepreneurship has gained popularity drawing on a hybrid approach of business-minded strategies for pursuing a social mission. Legitimacy construction serves to justify resource allocation by facilitators from the Global North and pitch for resource acquisition by social entrepreneurs in the Global South. LÄS MER