Science

JWST and ALMA reveal a dusty, rapidly growing black hole in the early universe

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Briefings

A 2026 study published on Oct. 9, posted to arXiv, identifies a quasar at redshift 6.5488 named J1440+0019. This object contains a supermassive black hole with a mass of approximately 1.1 billion suns, accreting rapidly. The discovery occurred when the universe was less than a billion years old, marking a significant milestone in understanding early cosmic evolution.

Key points

• The object J1440+0019 is a dust-reddened quasar located at redshift 6.5488.
• The black hole in this quasar has a mass of about 1.1 billion suns.

Context

This discovery provides a rare snapshot of a supermassive black hole in the early universe, offering insights into how such objects formed and evolved shortly after the Big Bang.

Limitations

The evidence is limited to a single preprint posted on Oct. 9, 2026, without peer review or observational confirmation. The redshift value is precise, but the specific location of the quasar in the sky remains unconfirmed.

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