this post was submitted on 04 Sep 2025
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JWST May Have Found The First Direct Evidence of a Primordial Black Hole (www.sciencealert.com)
submitted 5 days ago by Delta_V@lemmy.world to c/space@mander.xyz
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...has directly measured the mass of one of the mysterious 'Little Red Dots' (LRDs) spotted by JWST in the Epoch of Reionization, just 600 million years after the Big Bang...the rotation curve of QSO1 is neatly consistent with a galaxy rotating around a mass of about 50 million solar masses..."The only scenarios that can account for such a system are those invoking 'heavy seeds', such as direct collapse black holes (DCBHs, resulting from the direct collapse of massive pristine clouds), or primordial black holes (PBHs, formed in the first second after the Big Bang),"...The paper remains to be peer reviewed

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[–] cynar@piefed.social 17 points 5 days ago

The observations are direct. LRDs are thought to be either clusters of stars or a black hole. The spin is such that it is incompatible with a cluster of stars.

The maths is non-trivial, so needs to be confirmed by others.

As for the primordial part. Black holes are thought to form 1 of 2 ways. Slow build up, in the core of a galaxy, or crushed together by the pressures just after the big bang. This object has a galaxy too small, and too young, to explain it's size by slow growth. This implies that the galaxy formed around the hole, not vice versa.

This all seems pretty direct to me.