Essays about: "quasars"

Showing result 6 - 10 of 10 essays containing the word quasars.

1. 6. Foundation for an analysis of the dust of theNearby Universe

   University essay from Uppsala universitet/Institutionen för fysik och astronomi

   Author : Jimmy Kjellqvist; [2021]
   Keywords : Intergalacitc dust; dust distribution; cosmology; cosmological measurements; quasars;

   Abstract : The current cosmological paradigm of an accelerating cosmic expansion issupported by observations of Type Ia supernovae. However, the light emittedby these and other cosmological sources is not only redshifted by cosmicexpansion but will also interact with matter along the light path. READ MORE

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

   University essay from Uppsala universitet/Institutionen för fysik och astronomi

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

   Abstract : 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). READ MORE

4. 8. Ultraluminous sources in X-ray sky surveys

   University essay from Uppsala universitet/Högenergifysik

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

   Abstract : 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. READ MORE

5. 9. The Almighty Quasar — Destroyer of Worlds

   University essay from Uppsala universitet/Observationell astrofysik

   Author : Julia Ahlvind; [2019]
   Keywords : Astronomy; Habitability; Quasars; Active galactic nucleus; AGN;

   Abstract : In the study of habitability of terrestrial exoplanets, both life-supporting conditions and the prevalence of transient life-threatening events need to be considered. One type of hazardous effect that has so far not received much attention is the thermal effect of a nearby active galactic nucleus (AGN), or in this particular case, the class of the AGN known as a quasar. READ MORE

6. 10. Lighting and Graphics Effects for Real-Time Visualization of the Universe

   University essay from Institutionen för teknik och naturvetenskap; Tekniska högskolan

   Author : Jonna Ekelin; Lena Fernqvist; [2006]
   Keywords : ;

   Abstract : This work has been performed at SCISS AB, a company situated in Norrk öping and whose business lies in developing platforms for graphics visualization. SCISS's main software product, UniView, is a fully interactive system allowing the user to explore all parts of the observable universe, from rocks on the surface of a planet to galaxies and quasars in outer space. READ MORE