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Pōniuāʻena

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Pōniuāʻena
J1007+2115
A depiction of Pōniuāʻena created by NOIRLab
Observation data (Epoch J2000.0)
ConstellationLeo
Right ascension10h 07m 58.264s
Declination+21° 15′ 29.207″
Redshift7.52[1]
Distance1.302×1010 light-years (3.99×109 parsecs)
   (light-travel distance)
Other designations
J100758.264+211529.207, WISEA J100758.33+211529.4
See also: Quasar, List of quasars

Pōniuāʻena (/ˌpniɑːˈɛnə/), also named J100758.264+211529.207 or J1007+2115, is the third most-distant quasar known, with a measured redshift of z = 7.515 or a lookback time of 13.02 billion years.[2] Its 1.5 billion–solar mass black hole is the most distant known black hole with a mass of over one billion solar masses, and models indicate that it must have formed not later than 100 million years after the Big Bang, before reionization.[3] Its discovery was announced in June 2020.[4] Only the quasars ULAS J1342+0928 (z = 7.54) and J0313–1806 (z = 7.64) are known to be more distant.[3][5]

The quasar was primarily observed at the Mauna Kea Observatories on the island of Hawaiʻi; it was first discovered at the Gemini Observatory and was further identified using data from the W. M. Keck Observatory, UKIRT, Magellan Telescopes, and ALMA.[6] Hawaiian language experts at ʻImiloa Astronomy Center gave it the name Pōniuāʻena [ˌpoːnijuwaːˈʔɛnə], which "evokes the unseen spinning source of creation, surrounded by brilliance."[7]

References

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  1. ^ Yang et al. 2020
  2. ^ Monster Black Hole Found in the Early Universe, National Optical-Infrared Astronomy Research Laboratory, June 25, 2020
  3. ^ a b Brooks Hays (June 25, 2020). "Astronomers find massive black hole in the early universe". UPI.
  4. ^ Monster black hole found in the early universe, Keck Observatory, June 25, 2020 – via Science Daily, The second-most distant quasar ever discovered now has a Hawaiian name
  5. ^ Temming, Maria (January 18, 2021), "The most ancient supermassive black hole is bafflingly big", Science News, vol. 199, no. 3, Washington, D.C.: Society for Science & the Public, p. 4, retrieved February 28, 2021
  6. ^ Yang, Jinyi; Wang, Feige; Fan, Xiaohui; Hennawi, Joseph F.; Davies, Frederick B.; Yue, Minghao; Banados, Eduardo; Wu, Xue-Bing; Venemans, Bram; Barth, Aaron J.; Bian, Fuyan; Boutsia, Konstantina; Decarli, Roberto; Farina, Emanuele Paolo; Green, Richard; Jiang, Linhua; Li, Jiang-Tao; Mazzucchelli, Chiara; Walter, Fabian (July 1, 2020), "Pōniuā'ena: A Luminous z=7.5 Quasar Hosting a 1.5 Billion Solar Mass Black Hole", The Astrophysical Journal, 897 (1), The Astrophysical Journal Letters: L14, arXiv:2006.13452, Bibcode:2020ApJ...897L..14Y, doi:10.3847/2041-8213/ab9c26, S2CID 220042206
  7. ^ Astronomers and immersion kumu announce newly-named discovery: Pōniuāʻena, ʻImiloa Astronomy Center, June 25, 2020

Further reading

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