QSO J0313−1806
| J0313-1806 | |
|---|---|
| Observation data (Epoch J2000.0) | |
| Constellation | Eridanus |
| Right ascension | 03h 13m 43.84s |
| Declination | −18° 06′ 36.4″[1] |
| Redshift | 7.642[1] |
| See also: Quasar, List of quasars | |
J0313-1806 is the most distant known quasar at z = 7.64.[1] In January 2021, it was identified as the most redshifted (highest z) known quasar, with the oldest known supermassive black hole (SMBH) at 1.6±0.4×109 solar masses.[2][3][4] The 2021 announcement paper described it as "the most massive SMBH at z > 7".[1]: 4
One of the 2021 paper authors, Feige Wang, said that the existence of a supermassive black hole so early in the existence of the Universe posed problems for the current theories of formation since "black holes created by the very first massive stars could not have grown this large in only a few hundred million years".[3]
See also
References
- ^ a b c d Wang et al.
- ^ Maria Temming (January 18, 2021), "The most ancient supermassive black hole is bafflingly big", Science News
- ^ a b Harrison Tasoff (January 19, 2021), "Researchers discover the earliest supermassive black hole and quasar in the universe", phys.org
- ^ A Luminous Quasar at a Redshift of z=7.64, presentation at 237th Meeting of the American Astronomical Society, January 12, 2021
Sources
- "A Luminous Quasar at Redshift 7.642". January 12, 2021. arXiv:2101.03179 [astro-ph.GA].
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Further reading
- Alec Fox (January 19, 2021), "This 13-Billion-Year-Old Supermassive Black Hole Is the Oldest Ever Found", Smithsonian
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