H2356-309

H2356-309 is a blazar (a type of active galactic nucleus) located behind the Sculptor Wall.

H2356-309
Observation data (Epoch )
ConstellationSculptor[1]
Right ascension23h 59m 0.7903s[2]
Declination−30° 37′ 40.67″[2]
Redshift0.1654[2]
Distance2 billion light-years[1]
See also: Quasar, List of quasars

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
  1. "H2356-309: X-ray Discovery Points to Location of Missing Matter". Chandra. Retrieved 28 November 2019.
  2. "QSO B2356-309". Simbad. Retrieved 27 November 2019.
  3. 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.
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