Sökning: "active galaxy nuclei"

Visar resultat 1 - 5 av 9 uppsatser innehållade orden active galaxy nuclei.

  1. 1. Machine learning and statistical methods in search of cosmic neutrino sources

    Master-uppsats, Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

    Författare :Luigino Capone; [2022]
    Nyckelord :neutrino; gamma rays; astroparticle; machine learning; statistical methods; ice cube; Monte Carlo; active galaxy nuclei;

    Sammanfattning : .... LÄS MER

  3. 2. Measuring the [C II]-to-H I connection in high-redshift absorption-selected galaxies

    Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :Gaurav Senthil Kumar; [2022]
    Nyckelord :QSO; Quasar; Black Hole; AGN; Active Galactic Nuclei; DLA; Damped Lyman Alpha; C II; [C II]; H I; Sightline; HST; X-shooter; Spectroscopy; Echelle Spectroscope; Hyperfine transition; Hyperfine; Physics and Astronomy;

    Sammanfattning : HI neutral gas is the basic building block of galaxies. It dictates the star formation rate and hence the metal enrichment rates within high redshift galaxies. HI neutral gas cannot be directly observed beyond z ≈ 0. LÄS MER

  4. 3. Study of CO Emission in Nine Hot Dust-Obscured Galaxies at z ∼3

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

    Författare :Timothy Faerber; [2021]
    Nyckelord :Galaxies; high-z; AGN; starburst; quasar; evolution; cosmology;

    Sammanfattning : Massive galaxies evolve through different phases including starburst-dominated and active galactic nuclei (AGN)-dominated phases. These phases are predicted to be prevalent at earlier times (z ∼ 2 − 3). LÄS MER

  5. 4. Galaxy evolution in extreme environments

    Master-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :Samhitha Vadlamani; [2019]
    Nyckelord :Galaxy evolution; interactions; starburst; Compact galaxy groups; Stephan s Quintet; Physics and Astronomy;

    Sammanfattning : Interactions play a crucial role in determining how galaxies evolve in terms of their morphologies and star formation histories, since the majority of the known galaxies in the nearby Universe are found to exist in groups. Compact groups of galaxies are of particular interest as they contain a small number of galaxies in dense configurations and host repeated interactions between them, enabling us to capture signatures of these interactions (e. LÄS MER

  7. 5. High Energy gamma-ray behavior of a potential astrophysical neutrino source : The case of TXS 0506+056

    Master-uppsats, Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

    Författare :Nora Valtonen-Mattila; [2019]
    Nyckelord :Blazars; Active Galactic Nuclei; TXS 0506 056; Gamma rays; AGN; astrophysical neutrino; IceCube neutrino; astrophysical jets;

    Sammanfattning : Blazars are a type of Active Galaxy that emit strong astrophysical jets. The association of a HE gamma-ray flare from the blazar TXS 0506+056 to the IceCube-170922A neutrino event in 2017, opened the possibility to a link between these two events. LÄS MER