| H2356-309 | |
|---|---|
| Observation data ( Epoch ) | |
| Constellation | Sculptor [1] |
| Right ascension | 23h 59m 0.7903s [2] |
| Declination | −30° 37′ 40.67″ [2] |
| Redshift | 0.1654 [2] |
| Distance | 2 billion light-years [1] |
| See also: Quasar, List of quasars | |
H2356-309 is a blazar (a type of active galactic nucleus) located behind the Sculptor Wall.
Discovery
Using the Chandra X-ray Observatory and the XMM-Newton, scientists have detected a warm-hot intergalactic medium (WHIM) between galaxies in the Sculptor Wall. Scientists observed the absorption of a background light source in the warm-hot intergalactic medium. This background source is the blazar H2356-309.
Application
Characteristics of this absorption in the Sculptor Wall by the oxygen atoms in particular are similar to the absorption of the oxygen atoms in warm-hot intergalactic medium, giving scientists more assurance they can find other sources that compare to warm-hot intergalactic medium. There are also similarities in the predicted temperature and density of the warm-hot intergalactic medium compared to the Sculptor Wall. [3]
References
- ^ a b "H2356-309: X-ray Discovery Points to Location of Missing Matter". Chandra. Retrieved 28 November 2019.
- ^ a b c "QSO B2356-309". Simbad. Retrieved 27 November 2019.
- ^ Fang, Taotao (2010). "Confirmation of X-Ray Absorption by Warm-Hot Intergalactic Medium in the Sculptor Wall". The Astrophysical Journal. 714 (2): 1715–1724. arXiv: 1001.3692. Bibcode: 2010ApJ...714.1715F. doi: 10.1088/0004-637X/714/2/1715. S2CID 17524108.
