astro.wikisort.org - Galaxy
3C 321 is a system of two galaxies rotating around each other. They are notable for showing the first observed galaxy smiting another galaxy with a blast of energy, which is theorized to be from a supermassive black hole at the center of the former galaxy.
 | This article needs additional citations for verification. (February 2021) |
| 3C 321 | |
|---|---|
 Galaxy system 3C 321. A stream of energy is erupting from the "Death Star Galaxy" at bottom-left, striking its companion galaxy at top-right. | |
| Observation data (J2000 epoch) | |
| Constellation | Serpens |
| Right ascension | 15h 31m 43.48s[1] |
| Declination | +24° 04′ 19.3″[1] |
| Redshift | 0.096190[2] |
| Helio radial velocity | 27456 km/s[2] |
| Distance | 1.2 billion ly (370 Mpc) (Light travel time)[3] |
| Apparent magnitude (V) | 16.00[1] |
| Apparent magnitude (B) | 16.32[1] |
| Characteristics | |
| Type | Sa[1] |
| Other designations | |
| PGC 55317[2] | |
The larger galaxy, dubbed the "Death Star Galaxy" by NASA astronomers, has an energetic jet directed towards its companion. The discovery was announced by NASA on 18 December 2007. Observation of the enormous jet was possible due to the combined efforts of both space and ground-based telescopes.
Tools included NASA's Chandra X-ray Observatory, Hubble Space Telescope, Spitzer Space Telescope, the Very Large Array, and the Multi-Element Radio Linked Interferometer Network.
References
- "Search specification: 3C 321". HyperLeda. Université Claude Bernard Lyon 1. Retrieved 2021-02-12.
- "3C 321". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-02-12.
- "NASA/IPAC Extragalactic Database". Results for 3C 321. Retrieved 2010-04-26.
Further reading
- Hautaluoma, Grey; Morcone, Jennifer; Watzke, Megan (17 December 2007). "'Death Star' Galaxy Black Hole Fires at Neighboring Galaxy". NASA.
- Phillips, Tony (18 December 2007). "NASA Announces Discovery of Assault by a Black Hole". Science@NASA. NASA.
- Mosher, Dave (17 December 2007). "Galaxy Blasts Neighbor with Deadly Jet". Space.com.
- O'Hanlon, Larry (17 December 2007). "Galaxy Zapping Neighbor With Deathly Beam". Discovery News. Archived from the original on 19 December 2007.
External links
- "Black Hole Fires at Neighboring Galaxy" at Harvard University's Chandra Photo Album
- Source page for 3C321 at Extragalactic.info
- An Atlas of DRAGNs: 3C 321 by the Jodrell Bank Centre for Astrophysics
На других языках
[de] 3C 321
3C 321 ist ein System, bestehend aus zwei Galaxien. Bekannt wurde das System durch ein supermassereiches Schwarzes Loch im Zentrum einer der beiden Galaxien, welches aufgrund der Mechanismen der Materieaufnahme senkrecht zur Akkretionsscheibe einen Jet abstrahlt. Dieser Jet besteht aus hochenergetischer Gammastrahlung und Teilchen, welche sich fast mit Lichtgeschwindigkeit bewegen. Entdeckt wurde der Jet durch eine kombinierte Beobachtung des Systems mit Hilfe der Weltraumteleskope Chandra, Spitzer und Hubble; das Very Large Array und das Merlin Radioteleskop observierten von der Erde aus.- [en] 3C 321
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