Sökning: "eROSITA"

Hittade 2 uppsatser innehållade ordet eROSITA.

1. 1. Identifying Gravitationally Lensed QSO Candidates with eROSITA

   Master-uppsats, Uppsala universitet/Observationell astrofysik

   Författare :Róisín O'Rourke Brogan; [2020]
   Nyckelord :active galactic nuclei; agn; erosita; gaia; gravitational lensing; quasi-stellar objects; strong lensing; multiple images;

   Sammanfattning : As of June 2020, the first all-sky X-ray survey with the eROSITA instrument aboard the spacecraft Spektr-RG has been completed. A high percentage of the 1.1 million objects included in the survey are expected to be active galactic nuclei (AGN). 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