Sep 18, 2026 · 19 min · 9 segments
This one is based on a chat with Claude attempting to understand black hole stars. This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes…
Okay, let's unpack this.
Because JWST didn't just point at the sky and see a black hole star with a neat little label on it, right? No, definitely not.
It found a glaring inconsistency in the data.
Specifically in this population of objects from the universe's infancy.
Right.
Catchy name.
Yeah.
Well, in the photometric data, they appear incredibly compact and they're outputting just a staggering amount of energy in the infrared spectrum.
And usually, you know, when you see a point source that compact and that luminous at a high redshift.
The baseline assumption is, well, it's a quasar, right?
Exactly.
An actively feeding supermassive black hole.
But the standard model for a quasar dictates that as gas and dust spiral into the accretion disk, the friction superheats the material.
Right, which generates a massive, unmistakable flood of X-rays.
But when the surveys looked for that X-ray signature in these little red dots, I mean, there was essentially nothing.
Nothing at all.
They're entirely X-ray dark.
Which is, it's like finding a roaring thousand horsepower engine on a test block.
But you look at the tailpipe and there's absolutely zero exhaust.
Yes, exactly.
So where's the exhaust going? The missing X-ray problem was this massive hurdle that is until August 2026.
Right.
That's when a team led by Rohan Naidoo and his collaborators at MIT published a really crucial paper in Nature.
Okay, let's unpack this.
Because JWST didn't just point at the sky and see a black hole star with a neat little label on it, right? No, definitely not.
It found a glaring inconsistency in the data.
Specifically in this population of objects from the universe's infancy.
Right.
Catchy name.
Yeah.
Well, in the photometric data, they appear incredibly compact and they're outputting just a staggering amount of energy in the infrared spectrum.
And usually, you know, when you see a point source that compact and that luminous at a high redshift.
The baseline assumption is, well, it's a quasar, right?
Exactly.
An actively feeding supermassive black hole.
But the standard model for a quasar dictates that as gas and dust spiral into the accretion disk, the friction superheats the material.
Right, which generates a massive, unmistakable flood of X-rays.
But when the surveys looked for that X-ray signature in these little red dots, I mean, there was essentially nothing.
Nothing at all.
They're entirely X-ray dark.
Which is, it's like finding a roaring thousand horsepower engine on a test block.
But you look at the tailpipe and there's absolutely zero exhaust.
Yes, exactly.
So where's the exhaust going? The missing X-ray problem was this massive hurdle that is until August 2026.
Right.
That's when a team led by Rohan Naidoo and his collaborators at MIT published a really crucial paper in Nature.
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