Sökning: "supernovae"

Visar resultat 1 - 5 av 40 uppsatser innehållade ordet supernovae.

  1. 1. Testing the detectability of supernova ejecta from Population III stars with future ELT/ANDES

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

    Författare :Aron Kordt; [2023]
    Nyckelord :;

    Sammanfattning : The first stars, known as Population III (Pop III) stars, formed when the Universe was about 100 Myr to 200 Myr old. In contrast to the present-day Universe, star formation took place in a basically metal-free environment. Despite several decades of research, Pop III stars have not yet been directly observed. LÄS MER

  3. 2. Can we detect MeV neutrinos from supernovae detected with ZTF, part 2

    Master-uppsats, Uppsala universitet/Högenergifysik

    Författare :Ting Wing CHOI; [2022]
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  4. 3. Starbursts at Cosmic Dawn : Formation of Globular Clusters, Ultra-Faint Dwarfs, and Population III star clusters at z > 6

    Master-uppsats, Stockholms universitet/Institutionen för astronomi

    Författare :Olof Nebrin; [2022]
    Nyckelord :Cosmology; Galaxy Formation; Globular Clusters; First Stars; Dark Matter; Cosmic Dawn; Reionization; Ultra-Faint Dwarfs;

    Sammanfattning : In the standard model of cosmology (ΛCDM) the first stars, star clusters, and galaxies are expected to have formed in short bursts of star formation in low-mass dark matter halos at high redshifts (). Up to this point, attempts to predict the properties and abundances of these luminous objects have made use of numerically expensive cosmological simulations. LÄS MER

  5. 4. On The Run: How Fast Runaway Stars Can Escape From Their Home Cluster?

    Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :Anna-Maria Söderman; [2022]
    Nyckelord :star cluster; runaway stars; velocity distribution; Physics and Astronomy;

    Sammanfattning : Galaxies contain a wide variety of star clusters with different properties. Each cluster is a possible source of runaway stars, which can be progenitors of supernovae in other parts of the galaxy than their home cluster. Considering runaway stars in galaxy simulations has shown to increase the galactic feedback. LÄS MER

  7. 5. Prompt emission in Gamma-ray bursts; Photospheric Radiation from Synchrotron-Like spectra

    Kandidat-uppsats, KTH/Fysik

    Författare :Erik Vitols; [2022]
    Nyckelord :Gamma-ray burst; radiation mechanisms: thermal and non-thermal;

    Sammanfattning : Gamma-ray bursts (GRBs) are the most luminous phenomena in the Universe, explosions whoseenergy is generated by supernovae or mergers of dense objects such as neutron stars. The GRBemission is divided into the prompt emission phase characterized by γ-ray radiation and the afterglowof lower energy radiation. LÄS MER