ESO 0313-192
ESO 0313-192 (left), as taken from Hubble Space Telescope (HST), next to LOY2001 (right)
Observation data (J2000 epoch)
ConstellationEridanus
Right ascension03h 15m 51.80s[1]
Declination−19° 06′ 45.0″[1]
Redshift0.067±0.0002[2]
Distance1 Bly (225.9 Mpc)[2]
Group or clusterAbell 428[1]
Apparent magnitude (V)17.48[1]
Characteristics
TypeSA(s)ca (spiral radio galaxy)[3]
Size1.5 million ly (radio lobe(s))
Apparent size (V)0.69 x 0.14[1]
Notable featuresactive galactic nuclei
Other designations
LEDA 97372,[2] 2MASX J03155208-1906442,[2] NVSS J031552-190638,[2] [LO95] 0313-192[4]

ESO 0313-192 (also known as PGC 97372 and LO95 0313-192) is a edge-on spiral galaxy, or a double-lobed radio galaxy around 1 billion light-years away in the constellation Eridanus.[2] Its radio jets were discovered in 2003 by NASA, and its radio lobes are an estimated 1.5 million light years in diameter.[1] It is part of the cluster Abell 428, and it has an active galactic nuclei.[2]

Characteristics

ESO 0313-192 has a spiral shape similar to that of the Milky Way.[5] It has a large central bulge, and arms speckled with brightly glowing gas inhabited by thick lanes of dark dust.[2] Its companion, sitting pretty in the right of the frame, is known rather unpoetically as [LOY2001] J031549.8-190623.[4]

Jets, outbursts of superheated gas moving at close to the speed of light, have long been associated with the cores of giant elliptical galaxies, and galaxies in the process of merging.[1] However, in an unexpected discovery, astronomers found ESO 0313-192 to have intense radio jets spewing out from its central supermassive black hole.[2][4] The galaxy appears to have two more regions that are also strongly emitting in the radio part of the spectrum, making it even rarer still.[1]

The discovery of these giant jets in 2003, not visible in this image,[6] but indicated in this earlier Hubble composite,[7] has been followed by the unearthing of a further three spiral galaxies containing radio-emitting jets in recent years.[2][8] This growing class of unusual spirals continues to raise significant questions about how jets are produced within galaxies, and how they are thrown out into the cosmos.[3][9]

Properties

Nearly all classic double-lobed radio galaxies have either an elliptical galaxy or some kind of galactic merger at their center.[10] However, there is one remarkable exception to this rule.[6] In 2003, astronomers confirmed that ESO 0313-192, flanked by large, bright clouds of radio emissions, is in fact an edge-on spiral galaxy.[3][11]

Twisted Disc

If you look closely enough, ESO 0313-192's dark plane of dust is distinctly twisted.[1] This may be due to a collision or a near pass-by with a smaller galaxy, which may have sparked the galaxy's nucleus to life.[4][12]

  • ESO 0313-192 on NASA

Media related to ESO 0313-192 at Wikimedia Commons

References

  1. 1 2 3 4 5 6 7 8 9 "A misbehaving spiral". www.spacetelescope.org. Retrieved 2023-12-12.
  2. 1 2 3 4 5 6 7 8 9 10 "PGC 97372 - Galaxy - SKY-MAP". www.wikisky.org. Retrieved 2023-12-12.
  3. 1 2 3 "Recent Additions | Astropix". www.astropix.org. Retrieved 2023-12-12.
  4. 1 2 3 4 "A Large Double Radio Source from a Spiral Galaxy: 0313-192". pages.astronomy.ua.edu. Retrieved 2023-12-12.
  5. ↑ "Stunning Spiral Galaxy: A Remarkable View of LO95 0313-192". Pinterest. Retrieved 2024-01-08.
  6. 1 2 Morganti, R.; Holt, J.; Tadhunter, C.; Almeida, C. Ramos; Dicken, D.; Inskip, K.; Oosterloo, T.; Tzioumis, T. (2011-11-01). "PKS 1814-637: a powerful radio-loud AGN in a disk galaxy". Astronomy & Astrophysics. 535: A97. arXiv:1109.0630. doi:10.1051/0004-6361/201117686. ISSN 0004-6361.
  7. ↑ ""LO95 0313-192" – Science World". VOA. 2016-01-29. Retrieved 2024-01-08.
  8. ↑ "The Unruly Galaxy". Samford University. Retrieved 2024-01-08.
  9. ↑ "A misbehaving spiral". En definitiva, hay una cosa que nos une y ésta es la Tierra. Nosotros somos sus Titanes. (in Spanish). 2016-02-19. Retrieved 2024-01-08.
  10. ↑ Limited, Alamy. "0313 192 hi-res stock photography and images". Alamy. Retrieved 2024-01-08.
  11. ↑ Now, Astronomy. "LO95 0313-192 – Astronomy Now". Retrieved 2024-01-08.
  12. ↑ "Geckzilla.com - Art - Double Radio Spiral in Eridanus". geckzilla.com. Retrieved 2024-01-08.

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