Sökning: "galaxy cluster"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden galaxy cluster.

  1. 1. Effect of chameleons on the mass of a galaxy cluster

    Master-uppsats, Uppsala universitet/Teoretisk astrofysik

    Författare :Isabel Roca Vich; [2019]
    Nyckelord :Chameleons; modified gravity; galaxy cluster;

    Sammanfattning : Chameleons are scalar fields coming from modied gravity theories and can be possible explanations for Dark Energy. They cause a fifth force and have a screening mechanism which allows this force to avoid solar system constraints. In this thesis, astrophysical consequences of the potential presence of the chameleon field will be studied. 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. Bioinformatics pipeline development to support Helicobacter pylori genome analysis

    Master-uppsats, Göteborgs universitet/Institutionen för data- och informationsteknik

    Författare :SEYEDEH SHAGHAYEGH HOSSEINI; [2016-09-20]
    Nyckelord :Workflow management system; Pipeline development; Bioinformatics; High-Performance Computing;

    Sammanfattning : Helicobacter pylori is a bacterium related to a variety of diseases and is a majorrisk factor for gastric cancer [1]. There can be differences in the genomes of H. LÄS MER

  4. 4. The consequences of dwarf galaxies colliding with the Milky Way

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

    Författare :Ryan Skeoch; [2014]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : I simulate the collision of satellite galaxies with the Milky Way and observe the effects that this has on the orbits of the globular cluster populations within both the Milky Way and the satellite galaxies. This is done in order to investigate whether some of the Milky Way's globular clusters could have been donated from satellite galaxies which have been tidally stripped, since it is believed that the Sagittarius dwarf spheroidal galaxy is being tidally disrupted and that some of its globular clusters have been tidally stripped from it (such as Pal 12 and NGC 4147). LÄS MER

  5. 5. The possible impact of Intermediate Mass Black Holes on our Galaxy

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

    Författare :Wilhelm Krüger; [2014]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : Orbit integration for three different assumed Intermediate-mass Black Hole (IMBH, defined as black holes with mass MBH in the range 100Mo < MBH 104Mo) populations in the Milky Way for 10 Gyr has been performed. Upon collision with molecular clouds in the galactic disc, the relative velocity between both objects has been measured and the luminosity resulting from the gas accretion process onto the IMBH has been modeled. LÄS MER