Sökning: "Astronomi"

Visar resultat 1 - 5 av 251 uppsatser innehållade ordet Astronomi.

  1. 1. Theoretical and Experimental Studies of Dielectrophoresis on sub 20 nm Spaced Gold Electrodes

    Master-uppsats, Uppsala universitet/Institutionen för fysik och astronomi

    Författare :Aqib Hayat; [2018]
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  2. 2. Can tidal interactions produce MGC1?

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

    Författare :Eric Andersson; [2018]
    Nyckelord :globular cluster; MGC1; Andromeda; M31; galaxy; dwarf galaxy; tidal interactions; Physics and Astronomy;

    Sammanfattning : The globular cluster population of large spiral galaxies can be divided into two populations: one population which formed in-situ and one which has been assembled through capture of clusters that have been tidally stripped away from other galaxies during close encounters or mergers. In this work, I focus on the globular cluster MGC1, which is orbiting the M31 galaxy. LÄS MER

  3. 3. Coupled waves as a model to describe chaotic turbulence pumped by radio waves in the ionosphere

    Kandidat-uppsats, Uppsala universitet/Institutet för rymdfysik, UppsalaavdelningenUppsala universitet/Institutionen för fysik och astronomi

    Författare :Axel Hahlin; [2018]
    Nyckelord :turbulence; coupled waves; plasma;

    Sammanfattning : Experimental results concerning plasma turbulence pumped in theionosphere by powerful radio waves suggest that the turbulence is due todeterministic chaos. To investigate the possibility of deterministic chaosin the ionosphere coupled wave systems have been studied to see chaoticdynamics. LÄS MER

  4. 4. The first supernovae and the mass distribution of Population III stars

    Kandidat-uppsats, Lunds universitet/Astronomi

    Författare :Martin Mikitas; [2018]
    Nyckelord :Astronomy; Supernovae; STARFIT; Salpeter; IMF; Physics and Astronomy;

    Sammanfattning : The properties of the early Milky Way are quite mysterious and some are completely unknown even today. This study is the first one ever to analyze the mass distribution of Population III bulge stars. LÄS MER

  5. 5. Broadening of spectral lines in the Gaia-ESO survey

    Kandidat-uppsats, Uppsala universitet/Teoretisk fysik

    Författare :Kristoffer Bengtsson; [2018]
    Nyckelord :Astronomy; Hydrogen; Iron; Spectral line broadening; collisional broadening; pressure broadening; Gaia; Stellar atmosphere; spectrum; stars: abundances; Atomic data; Astronomi; tryckbreddning; kollisionsbreddning; breddning av spektrallinjer; spektrum; väte; järn; Gaia; stjärnatmosfär; atomdata;

    Sammanfattning : Analyzing stellar spectra plays a big role in understanding the evolution of our galaxy. Having good data for spectral line properties is very important when analyzing these spectra. One part of the Gaia-ESO public spectroscopic survey (GES) is to gather data for spectral line properties from stellar spectra. LÄS MER