Essays about: "AGN"

Showing result 1 - 5 of 12 essays containing the word AGN.

1. 1. Identifying Gravitationally Lensed QSO Candidates with eROSITA

   University essay from Uppsala universitet/Observationell astrofysik

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

   Abstract : 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). READ MORE

3. 2. AGN Candidates for High Energy Neutrino Emission in IceCube

   University essay from Uppsala universitet/Högenergifysik

   Author : Roisín O'Rourke Brogan; [2020]
   Keywords : active galactic nuclei; agn; high energy physics; neutrinos; IceCube; blazars; jets; gamma emission;

   Abstract : Since the construction of the IceCube Neutrino Observatory was completed in 2010, many amazing discoveries have been made in the field of neutrino physics. Recently a neutrino event has been linked to an blazar-type active galactic nucleus source, bringing us one step closer to understanding the production of high-energy extragalactic neutrinos and ushering in a new era of multimessenger astronomy. READ MORE

4. 3. Galaxy evolution in extreme environments

   University essay from Lunds universitet/Astronomi

   Author : Samhitha Vadlamani; [2019]
   Keywords : Galaxy evolution; interactions; starburst; Compact galaxy groups; Stephan s Quintet; Physics and Astronomy;

   Abstract : Interactions play a crucial role in determining how galaxies evolve in terms of their morphologies and star formation histories, since the majority of the known galaxies in the nearby Universe are found to exist in groups. Compact groups of galaxies are of particular interest as they contain a small number of galaxies in dense configurations and host repeated interactions between them, enabling us to capture signatures of these interactions (e. READ MORE

5. 4. High Energy gamma-ray behavior of a potential astrophysical neutrino source : The case of TXS 0506+056

   University essay from Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

   Author : Nora Valtonen-Mattila; [2019]
   Keywords : Blazars; Active Galactic Nuclei; TXS 0506 056; Gamma rays; AGN; astrophysical neutrino; IceCube neutrino; astrophysical jets;

   Abstract : 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. READ MORE

6. 5. Type-1 Active Falactic Nuclei and their Supernovae

   University essay from Uppsala universitet/Teoretisk astrofysik

   Author : Inigo Imaz Chacon; [2019]
   Keywords : SN; AGN; supernova; counts; star formation; astronomy; type-1 AGN; obscured; thermonuclear; core-collapsed;

   Abstract : Supernovae (SNe) and more specifically Core-Collapsed SNe (CC SNe) are signatures of on-going star formation (SF), and higher star formation rates. In this project, we perform a study of all SNe ever discovered inside a specific type of galaxy: a type-1 Active Galactic Nucleus (AGN1). READ MORE