Sökning: "lightcurves"

Hittade 5 uppsatser innehållade ordet lightcurves.

  1. 1. A study of the gamma-ray emission from the blazar S50716+71 using the Fermi-LAT telescope

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

    Författare :Fredrik Vislander; [2022]
    Nyckelord :AGN; active galactic nuclei; Fermi-LAT; astrophysics; gamma-rays; synchrotron self-Compton; SSC; S50716 71.;

    Sammanfattning : This thesis sums up a bachelor project in which gamma-ray emission from an extra-galactic source (S50716+71) is studied using data collected by the Fermi Large Area Telescope (LAT). The emission consists of 12,5 years of data (April 2008 to February 2020) in the energy range 100 MeV - 300 GeV. LÄS MER

  3. 2. Lightcurves of super-Chandrasekhar mass supernovae

    L3-uppsats, Uppsala universitet/Institutionen för fysik och astronomi

    Författare :Amanda Byström; [2020]
    Nyckelord :Type Ia supernovae; lightcurves; Chandrasekhar limit; SN2003fg; Phillip s relationship;

    Sammanfattning : 20 supernovae that spectroscopically match the peculiar, superluminous type Ia supernova 2003fg are studied in this project. SN2003fg is thought to have erupted at a super-Chandrasekhar mass, thus breaching the theoretical mass limit for a white dwarf. LÄS MER

  4. 3. Testing the multi-epoch luminosity function of asymptotic giant branch stars in the Small Magellanic Cloud with VISTA

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

    Författare :Róisín O'Rourke Brogan; [2020]
    Nyckelord :stars: AGB; stars: late-type; stars: atmospheres; stars: variable; small magellanic cloud; magellanic system; stellar populations; model stellar populations; dwarf galaxies;

    Sammanfattning : The physics pertaining to the asymptotic giant branch (AGB) phase of stellar evolution has been studied for many years. However, the mechanics behind many characteristics displayed at this stage are still not fully understood. LÄS MER

  5. 4. 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

  7. 5. Photo-evaporation of Globulettes : Numerical hydrodynamic studies of photo-evaporating low-mass globules in the Rosette Nebula

    Uppsats för yrkesexamina på grundnivå, Institutionen för astronomi

    Författare :Andrej Kuutmann; [2007]
    Nyckelord :astronomi; astronomy; astrophysics;

    Sammanfattning : In this work, the long-term evolution of globulettes, low-mass globules found in H II regions, is studied through numerical hydrodynamic simulations. It has been proposed by Gahm et al. LÄS MER