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Larry_Phischman t1_ixl5p0p wrote

Fun fact: If the Milky Way had an active galactic nucleus or even a full blown quasar, we wouldn’t be able to see the jet or the accretion disk because there’s too much dust and stray hydrogen in the way. It would show up in RF.

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dakd2 t1_ixmoxnc wrote

I wonder why the belt around the blackhole seems to look like as if we took how the glow from the galactic center seems to extend and condensed it into something that looks solid like a silicon gel bar

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PingouinMalin t1_ixlrl33 wrote

Do we agree it's stuff that orbited around it and got accelerated but not really stuff that got beyond event horizon and then got expelled (cause unless I've understood nothing that should never be possible) ?

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ACSpeed t1_ixlzsam wrote

The theory here is a shockwave caused by a "magnetic reconnection, where magnetic field lines break, reform and connect with other nearby lines", which is the same process that accelerates plasma on our own Sun. There's nothing to specify these particles were "orbiting" anything. But yes, it does appear to suggest that these particles did not enter the black hole before entering the "jet" and being expelled.

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flowering_sun_star t1_ixnfu0h wrote

Yep.

Things falling towards a black hole have an extraordinary amount of energy. Something free falling towards one would pick up a vast amount of speed before crossing the event horizon. Which means if it smacks into anything that event is going to be energetic. If something actually is orbiting, it needs to change speed a lot to drop below the ISCO (innermost stable circular orbit). And that is also an energetic process.

So while nothing can escape the black hole itself, the system around it can have a lot of energy to spare that make accreting black holes some of the brightest objects in the universe. As well as photons they can also produce impressive jets of matter. Nobody has ever doubted that there is plenty energy to spare to make the jets, but the mechanism has been a bit of a mystery.

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smurficus103 t1_ixm06r0 wrote

Unless the magnetic force generated within the event horizon is strong enough to force stuff out against the strength of gravity

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NOLA_Tachyon t1_ixmqbzv wrote

That’s impossible. The event horizon is the point at which space falls towards the singularity faster than light speed. For anything to come back out, it would have to move faster than light. For any matter as we know it to move faster than light, it would require infinite energy.

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smurficus103 t1_ixn5x7i wrote

You're right, i tend to think in more classical physics and not GR, but it's still fun to contemplate... ya know, could some magnetic generation inside of a black hole rival the force of gravity? Particularly if you don't think of these things as singularities and instead objects with a bunch of stuff happening inside that collectively are enough local energy density to always bend light into orbits

Dont get too excited by this article, they say it's probably a coincidence at the end of the article https://www.forbes.com/sites/startswithabang/2020/06/25/shocking-new-observation-merging-black-holes-really-can-emit-light/?sh=35cd33a417bf

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PingouinMalin t1_ixm0opk wrote

How would that work, considering even light cannot escape that pull and it is the fastest "thing" possible ?

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smurficus103 t1_ixm1un7 wrote

I guess imagine the black hole as something larger than a star, spinning fast, with violent collisions from stars it eats, generating a huge magnetic field, like a dynamo, and burping out a bit of xrays? It's kinda fun, but, yeah, who knows.

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PingouinMalin t1_ixm2yt9 wrote

To be fair, everything about the universe, it's scale and the kind of things like black holes fascinate me but also break my understanding of things.

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ACSpeed t1_ixmganx wrote

The paper states the following "particles become energized over a limited volume, for example at a shock front, and then advect or diffuse away from that region" which indicates these particles are energised before entering the event horizon so it doesn't appear to be a process that occurs within the EV. Nothing is being "ejected", it's being forced away.

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iprocrastina t1_ixp2te0 wrote

IANAP but sounds like what they're saying is if anything manages to get knocked out of a black hole's orbit while traveling at relativistic speeds then that means it has to have an enormous amount of energy to fight out of that gravitational well.

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ZylonBane t1_ixmbued wrote

So, outflow jets of high-energy ionised matter particles.

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Nemo_Shadows t1_ixmho2q wrote

And how fast would those jets have to be to escape the Gravity, and what part does Magnetic Fields in the band and layers play in their focusing and expulsion which I am assuming happens out of what would be a Black Holes Poles since I am pretty sure they also have an axial spin.

N. Shadows

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IdeaFuzzy t1_ixmc97s wrote

I’ve seen some convincing data several years ago that black holes are matter emitters throughout the universe. Portals I guess from a dimension we aren’t able to observe perhaps

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DocLoc429 t1_ixss3jz wrote

It's the Accretion Disk which is being propelled, not the actual black hole.

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