Sökning: "XMM"

Visar resultat 1 - 5 av 10 uppsatser innehållade ordet XMM.

  1. 1. Original: X-ray Spectral Analysis of a Serendipitously Observed Active Galactic Nucleus

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Teodor Elmfeldt; Filip af Malmborg; [2020]
    Nyckelord :;

    Sammanfattning : An active galactic nucleus (AGN) is a region in the center of a galaxy with a supermassive black hole continuosly accreting material. This accretion gives rise to large amounts of radiation across the whole electromagnetic spectrum, and largely affects the regions around the AGN and the evolution of the whole galaxy. LÄS MER

  3. 2. Ultraluminous sources in X-ray sky surveys

    Master-uppsats, Uppsala universitet/Högenergifysik

    Författare :Miquel Colom i Bernadich; [2020]
    Nyckelord :X-rays; X-ray astronomy; black holes; neutron stars; accretion physics; XMM-Newton; eROSITA;

    Sammanfattning : Ultraluminous X-ray sources (ULXs) are extragalactic, non-nuclear, point-like X-ray sources whose luminosity supersedes that of the Eddington limit of an accreting stellar mass black hole (L> 10 ^ 39 erg / s). Most of them are powered by black holes and neutron stars undergoing genuine super-Eddington accretion, with a small handful of candidates being consistent with sub-Eddington accretion on an intermediate mass black hole. LÄS MER

  4. 3. Investigating super-Eddington accretion flows in Ultraluminous X-ray sources

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Andrés Gúrpide Lasheras; [2018]
    Nyckelord :Accretion; X-ray binaries; Black holes; Neutron Stars; Ultraluminous X-ray sources;

    Sammanfattning : It is now widely known that most of the large galaxies we observe (e.g. the Milky Way) host in their center a supermassive black hole ($10^{6}-10^{9}$ $M_\odot$). LÄS MER

  5. 4. A X-Ray Spectroscopy Study of LINERs as Observed by XMM-Newton

    Master-uppsats, KTH/Fysik

    Författare :Adam Andrews; [2017]
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  7. 5. X-ray Spectroscopy of Distant Active Galactic Nuclei

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Charlie Börjeson; Julia Cohen; [2017]
    Nyckelord :;

    Sammanfattning : The physical structure and behaviour of stars have been studied extensively throughout centuries.In contrast, the existence of objects now known as Active Galaxies has only been established since a couple of decades. LÄS MER