Catch up on stories from the past week (and beyond) at the Slashdot story archive

 



Forgot your password?
typodupeerror
×
Space

Researchers Spot Black Hole Eating Stuff At Over 40x the Theoretical Limit (sciencealert.com) 34

Astronomers have discovered a supermassive black hole in the early Universe devouring matter at over 40 times the Eddington limit. ScienceAlert reports: Led by astronomer Hyewon Suh of Gemini Observatory and NSF's NOIRLab, a team of researchers used JWST to take follow-up observations of a smattering of galaxies identified by the Chandra X-ray Observatory that were bright in X-rays but dim in other wavelengths. When they got to LID-568, they were having trouble identifying its distance across space-time. The galaxy was very faint and very hard to see; but, using the integral field spectrograph on JWST's NIRSpec instrument, the team homed in on the galaxy's exact position. LID-568's far-off location is surprising. Although the object is faint from our position in the Universe, its distance means it must be incredibly intrinsically bright. Detailed observations revealed powerful outflows from the supermassive black hole, a signature of accretion as some of the material is being diverted and blasted into space.

A painstaking analysis of the data revealed that the supermassive black hole is a relatively small one, as supermassive black holes go; just 7.2 million times the mass of the Sun. And the amount of light being produced by the material around the disk was much, much higher than a black hole of this mass should be capable of producing. It suggests an accretion rate some 40 times higher than the Eddington limit. At this rate, the period of super-Eddington accretion should be extremely brief, which means Suh and her team were extremely lucky to catch it in action. And we expect that LID-568 will become a popular observation target for black hole scientists, allowing us a rare glimpse into super-Eddington processes.
The research has been published in Nature Astronomy.

Researchers Spot Black Hole Eating Stuff At Over 40x the Theoretical Limit

Comments Filter:
  • I'm not an astrophysicist but I'd have thought that Dark Matter would be the obvious way to allow Black Holes to accrete mass rapidly. There is a lot more of it around that ordinary (baryonic) matter and since it does not interact via electromagnetism then light will not exert any pressure on it and there is nothing to counteract gravity.
    • There is no dark matter
      • by 2TecTom ( 311314 )

        there are however dark matters. for instance, just look at classism, it's proof positive some people are black holes

      • There is no dark matter

        You're right. This is merely a fancy term to describe the 95% of something out there we know nothing about.

        Within our (limited) understanding, it’s “matter” of some kind. Until we prove it’s not.

        • by Entrope ( 68843 )

          This is merely a fancy term to describe the 95% of something out there we know nothing about.

          Cosmologists think the universe is about 5% ordinary matter, but only 27% dark matter. The rest is dark energy, not dark matter.

  • The Eddington limit is about stars and not about black holes. There is nothing to balance in case of a black hole. Its luminosity depends on the surrounding material, friction and how much is falling into the black hole.

    • by Tx ( 96709 )

      There is nothing to balance in case of a black hole

      Yes, there is. The accretion disk of a growing black hole emits light, and it is the radiation pressure of that light that determines the point at which the black hole eventually stops growing - that radiation pressure reaches a point where it prevents any further matter from getting close enough to the black hole to be accreted. So the Eddington Luminosity absolutely applies to an actively growing black hole.

  • I would have figured by now, scientists would have at least learned how much they don't know vs trying to quantify how much they do know. Every time someone says "this is a fact about the universe", 10-20 years later they're proven wrong time and time again.
    • Publish or perish.

      There aren't that many in the field in an absolute sense who are qualified to to do peer review on anything the others publish.

      So lots of stuff gets published. Is accepted as fact. We put up a new telescope or instrument of some sort and are astounded that half of the laws are the universe we made up simply aren't true. Repeat each generation of new scientists.

      You'll see the same happen in other fields. Anthropology told us North America was first conixed from Asia about 7k BC. Then 1

      • by Kokuyo ( 549451 )

        Given that science these days (and probably at every point in existence of humans) isn't a sacred, 100% dependable source of facts...

        How do I counter flat earthers at this point? Or anti-vaxxers. Being an autist, I am forced to be rather overly precise when using phrases like "we know".

        Yes, I'm pretty sure that the earth is round and I'm pretty sure quite a few of the experiments to prove it are correct. But if they ask me "Can you be one hundred percent certain?" I'll always have to say "Well, no".

        Yes, it

        • But if they ask me "Can you be one hundred percent certain?" I'll always have to say "Well, no".

          Terrible example. We are 100% certain about the shape of the planet. There is ZERO chance of being wrong here. None. It is sort of slightly oval but mostly round.

          We are not 100% certain where detection, observation and reproduction are difficult. Here we rely on multiple, overlapping, data to test the current prevailing hypothesis to abstraction. If we continually fail to disprove - and that is actually the whole point behind the scientific method - the hypothesis then we accept that it is very likely true

    • by gtall ( 79522 )

      Science rarely "says" anything is fact, their statements are usually if theory A is correct, then B. It is people like you who promote those statements to "Science says B".

  • It's still less than your mother.

Sigmund Freud is alleged to have said that in the last analysis the entire field of psychology may reduce to biological electrochemistry.

Working...