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...

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...

"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...

A quasar (/ˈkweɪzɑːr/ KWAY-zar) is an extremely luminous active galactic nucleus (AGN). It is sometimes known as a quasi-stellar object, abbreviated QSO...

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...

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...

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...

astronomer Max Wolf on March 23, 1903. The galaxy does not have an active galactic nucleus. "HyperLeda -object description". atlas.obs-hp.fr. Retrieved 2024-04-22...

general Active galactic nucleus Galactic bulge Galactic disc Galactic habitable zone Galactic halo Dark matter halo Galactic corona Galactic magnetic...

Galactic core or galaxy core can refer to: Astronomy Galactic Center of the Milky Way Nucleus region of a galaxy Active galactic nucleus, of a regular...

March 23, 1903, by the astronomer Max Wolf and it does not have an active galactic nucleus or an indication of star formation. "HyperLeda -object description"...

in 1783 by William Herschel. NGC 7800 is not known to have an active galactic nucleus, and is not known to have much star-forming regions. "By Name |...

German astronomer Max Wolf. It is unknown whether IC 3403 has an active galactic nucleus. "HyperLeda -object description". atlas.obs-hp.fr. Retrieved 2024-04-22...

calculate the apparent magnitude for both objects. It is a possible active galactic nucleus candidate, according to SIMBAD. "Your NED Search Results". ned...

larger compared to the Milky Way. and is classified as LINER-type active galactic nucleus galaxy according to SIMBAD. Despite listed in the Virgo Cluster...

region. The coexistence of a circumnuclear starburst ring and an active galactic nucleus have turned NGC 7469 into a key target for studying their relation...

French astronomer, Stephane Javelle on November 25, 1897. It has an active galactic nucleus according to SIMBAD and considered an emission-line galaxy. IC...

category of spirals that have split-arms. It is known to have a LINER active galactic nucleus according to SIMBAD. Type IIP supernova, SN 2009lo was discovered...

of active galactic nucleus (AGN) or a galaxy with such an AGN, named after its prototype, BL Lacertae. In contrast to other types of active galactic nuclei...

Gary; Diamond-Stanic, Aleksandar M. (1 May 2010). "Unobscured Type 2 Active Galactic Nuclei". The Astrophysical Journal. 714 (1): 115–129. arXiv:1004.2077...

A blazar is an active galactic nucleus (AGN) with a relativistic jet (a jet composed of ionized matter traveling at nearly the speed of light) directed...

is an interacting grand-design spiral galaxy with a Seyfert 2 active galactic nucleus. It lies in the constellation Canes Venatici, and was the first...

Spitaler, an Austrian astronomer. It is not known whether it has an active galactic nucleus. Type Ia supernova, iPTF14atg was discovered in IC 831 on May 3...

to the Milky Way. It is categorized as a LINER galaxy with an active galactic nucleus emitting weak emission-lines. IC 3505 was discovered by Royal Harwood...

NGC 5128 is one of the closest radio galaxies to Earth, so its active galactic nucleus has been extensively studied by professional astronomers. The galaxy...

heterogeneous halo of extremely hot gas, posited to be due to the active galactic nucleus at the core of the central elliptical galaxy. M87 is the largest...

observations of a rapidly growing supermassive black hole known as an active galactic nucleus, or AGN. Oxygen atoms in the WHIM were seen to absorb X-rays passing...

considered as a radio galaxy by the SIMBAD database. It has an active galactic nucleus and contains high amounts of ionized hydrogen. "NGC 4991 - Barred...

luminous quasars known. As a quasar, TON 618 is believed to be the active galactic nucleus at the center of a galaxy, the engine of which is a supermassive...

Albert Marth, a German astronomer on May 8th,1864. NGC 5535 has an active galactic nucleus and considered as a radio galaxy according to SIMBAD, in which...