Pōniuāʻena

Pōniuāʻena
J1007+2115
Pōniuāʻena; J1007+2115
Observation data (Epoch J2000.0)
Constellation	Leo
Right ascension	10h 07m 58.264s
Declination	+21° 15′ 29.207″
Redshift	7.52
Distance	13.02×109 light-years (3.99×109 parsecs)
Other designations
	J100758.264+211529.207
	See also: Quasar, List of quasars

Pōniuāʻena (/ˌpoʊniuːɑːˈɛnə/), also named J100758.264+211529.207 or J1007+2115, is the third most-distant quasar known, with a measured redshift of z = 7.52 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 quasar ULAS J1342+0928 (z = 7.54) is known to be more distant.^[3]

The quasar was observed by telescopes in the U.S. state of Hawaii and named by Hawaiian language experts at ʻImiloa Astronomy Center; the name pōniu-ā-ʻena ([ˌpoːnijuwaːˈʔɛnə] "to spin until glowing") "evokes the unseen spinning source of creation, surrounded by brilliance."^[5]

References[]

^ Yang et al. 2020
^ Monster Black Hole Found in the Early Universe, National Optical-Infrared Astronomy Research Laboratory, June 25, 2020
^ ^a ^b Brooks Hays (June 25, 2020). "Astronomers find massive black hole in the early universe". UPI.
^ 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
^ Astronomers and immersion kumu announce newly-named discovery: Pōniuāʻena, ʻImiloa Astronomy Center, June 25, 2020

Pōniuāʻena

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