• An active galactic nucleus (AGN) is a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum...
    48 KB (6,024 words) - 02:14, 13 May 2024
  • Thumbnail for Radio galaxy
    structure. These energetic radio lobes are powered by jets from its active galactic nucleus. They have luminosities up to 1039 W at radio wavelengths between...
    23 KB (3,059 words) - 18:16, 13 January 2024
  • Thumbnail for NGC 5643
    about 40 million light-years (12.5 megaparsecs). NGC 5643 has an active galactic nucleus and is a type II Seyfert galaxy. The galaxy was first discovered...
    13 KB (1,566 words) - 08:26, 25 April 2024
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    "active" if they contain an active galactic nucleus (AGN). A significant portion of the galaxy's total energy output is emitted by the active nucleus instead...
    163 KB (16,377 words) - 09:47, 18 May 2024
  • Thumbnail for Phoenix Cluster
    the Milky Way's 1 M☉ per annum of star production); the central active galactic nucleus attested to not have been producing sufficient energy to ionize...
    13 KB (1,423 words) - 16:14, 13 May 2024
  • general Active galactic nucleus Galactic bulge Galactic disc Galactic habitable zone Galactic halo Dark matter halo Galactic corona Galactic magnetic...
    9 KB (780 words) - 12:10, 30 October 2023
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    Quasar (category Active galaxy types)
    A quasar (/ˈkweɪzɑːr/ KWAY-zar) is an extremely luminous active galactic nucleus (AGN). It is sometimes known as a quasi-stellar object, abbreviated QSO...
    66 KB (7,916 words) - 22:38, 13 April 2024
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    Gary; Diamond-Stanic, Aleksandar M. (1 May 2010). "Unobscured Type 2 Active Galactic Nuclei". The Astrophysical Journal. 714 (1): 115–129. arXiv:1004.2077...
    12 KB (1,385 words) - 20:24, 28 June 2023
  • Nucleus may also refer to: Active galactic nucleus in astronomy Comet nucleus, the solid, central part of a comet Cell nucleus, a central organelle of a...
    3 KB (362 words) - 16:42, 11 April 2024
  • Thumbnail for NGC 1110
    to have lots of star formation, and it is not known to have an active galactic nucleus. "By Name | NASA/IPAC Extragalactic Database". ned.ipac.caltech...
    2 KB (125 words) - 14:25, 19 May 2024