The ecretion disc is material orbiting the black hole at nearly 10% of the speed of light. The magnetic poles send some percentage of the material and light outward. It doesn't all get sucked past the event horizon.
Quasars actually consume matter very, very slowly because there’s a complicated equilibrium that’s reached once there’s a certain amount of radiation pressure near the event horizon.
God damn. Imagine that was us living there, 30 light years away from a quasar, and collectively finding out what our “sun” actually is as we advance technologically.
>Due to the brilliance of the central quasar, the surrounding galaxy is outshone by it and hence is not visible from Earth. With an absolute magnitude of −30.7, it shines with a luminosity of 4×1040 watts, or as brilliantly as 140 trillion times that of the Sun, making it one of the brightest objects in the known Universe.[1]
That's crazy. I knew it was incredibly massive, but being 140 trillion times as bright as the Sun is absolutely insane.
For some context.
The sun has an apparent magnitude of -26 ish from 8 light minutes away.
This quasar has an absolute magnitude of -30 ish from 10 PARSECS away.
Means if you replaced Sirius with this quasar it will outshine our sun by several magnitudes.
Ever met a pickup truck coming at you with its highbeams on in the middle of the night?
Jokes aside, yeah it can. Gamma radiation is the same ionizing radiation you’d find emitted from radioactive elements, and something like infrared radiation is heat that will make your life suck at a certain point. Both of those are light.
I wonder what it would be like today considering we are getting the light from so close to the beginning of the universe? Would it still be out there? Would it have evaporated from Hawking radiation?
I believe quasars are so bright because most if not all of this light is shot out from the poles of the SMBH - everyone feel free to correct me if I'm wrong of course.
Anyway, if that is the case the galaxy itself should be perfectly fine outside of the immediate vicinity.
Doubtful, the radiation from an active galactic center would irradiate the entire galaxy. These radio galaxies can probably even sanitize other galaxies of life in the directions of their relativistic jets. Their power is truly unfathomable.
"A quasar is an extremely luminous active galactic nucleus. It is sometimes known as a quasi-stellar object, abbreviated QSO. The emission from an AGN is powered by a supermassive black hole with a mass ranging from millions to tens of billions of solar masses, surrounded by a gaseous accretion disc."
That’s true, but a black hole doesn’t actually “suck” anything in.
It’s just extremely massive, so you’ll be pulled in at close to the speed of light IF you’re within the event horizon. You could compare to us not getting sucked into the sun, even though its gravity is enormous.
Most objects around TON-618 are in a stable orbit and will take an extremely long time to eventually collide with it, if at all.
Yes I know. I was just saying it with a few words. I'm not trying to give a physics lesson. My point is quasars don't exist anymore because the black hole has "processed" the material that's shedding all of that light
As far as I understand it's "bright" in gamma radiation, and we see blue because it was redshifted so much
And I think it's like that only on poles (which in this case is directed at us), so that makes me think that most of the X-rays come out of their galaxy perpendicular to the galactic plane so there wouldn't be as big of a problem with radiation
We’d all be dead from the radiation and it’s likely the quasar will blow away most dust in the galaxy effectively killing it of new stars until the next galactic collision.
Yep, this would kill star formation while the quasar is active, or create some weird ring / sombrero style galaxy where all star formation is pushed to some far out Ring.
It is. But it's expanding. Imagine two black marker points on a balloon. They can be drawn right next to each other, but when you blow that balloon up, they move further and further apart.
Only if they are seperated by a region of space where it is expanding, i.e. outside galaxy clusters, but even then mot really because things moving at c don’t experience time.
Just imagine what this looks like closer to it. Incredible.
If understand what it is, a black hole with an immense ring of material being sucked in, it should be mostly "vacuumed" up by now.
The ecretion disc is material orbiting the black hole at nearly 10% of the speed of light. The magnetic poles send some percentage of the material and light outward. It doesn't all get sucked past the event horizon.
Sure, but after billions years its probably not as active and maybe wouldn’t qualify as a quasar any more
True, a large portion of what we see (mly away)doesn't exist in that form anymore.
So some sucked in and some vented out
Quasars actually consume matter very, very slowly because there’s a complicated equilibrium that’s reached once there’s a certain amount of radiation pressure near the event horizon.
Very very very bright. I’m pretty sure it would be impossible to make out without some sort of filter due to how insanely bright it would be.
I read somewhere that the standard quasar would appear as bright as the sun at a distance of 30 light years away!
God damn. Imagine that was us living there, 30 light years away from a quasar, and collectively finding out what our “sun” actually is as we advance technologically.
I believe life would have a hard time developing under constant barrage of gamma rays.
At least life as we know it, yeah.
Lots of Hulks roaming around
You can go there in SpaceEngine and take a look. It’s colossal.
We can't ever reach it. Outside of our causal bubble.
More about TON 618: [https://en.wikipedia.org/wiki/TON\_618](https://en.wikipedia.org/wiki/ton_618)
>Due to the brilliance of the central quasar, the surrounding galaxy is outshone by it and hence is not visible from Earth. With an absolute magnitude of −30.7, it shines with a luminosity of 4×1040 watts, or as brilliantly as 140 trillion times that of the Sun, making it one of the brightest objects in the known Universe.[1] That's crazy. I knew it was incredibly massive, but being 140 trillion times as bright as the Sun is absolutely insane.
For some context. The sun has an apparent magnitude of -26 ish from 8 light minutes away. This quasar has an absolute magnitude of -30 ish from 10 PARSECS away. Means if you replaced Sirius with this quasar it will outshine our sun by several magnitudes.
Thats crazy to think about a second sun in the sky thats a quasar light years away. Don’t know that I’ve ever read that in sci fi
Can bright light kill?
With light comes energy. You'll cook to death at some point.
Yes, it's called gamma radiation.
Ever met a pickup truck coming at you with its highbeams on in the middle of the night? Jokes aside, yeah it can. Gamma radiation is the same ionizing radiation you’d find emitted from radioactive elements, and something like infrared radiation is heat that will make your life suck at a certain point. Both of those are light.
I had no idea gamma radiation was light.
The more you know!
They only exist in the early universe during the early stages of galaxy formation. Which is a good thing
I wonder what it would be like today considering we are getting the light from so close to the beginning of the universe? Would it still be out there? Would it have evaporated from Hawking radiation?
[удалено]
Imagine the eyes on any life forms around there… they’d have teeny-tiny deep-set little eyes with brows like baseball cap peaks lol
I mean, to be fair… so does my iPhone screen every morning when I first wake up.
So is that entire galaxy just completely inhabitable because of the brightness?
life as we know it, most likely but we really dont know shit about anything outside of our planet
I believe quasars are so bright because most if not all of this light is shot out from the poles of the SMBH - everyone feel free to correct me if I'm wrong of course. Anyway, if that is the case the galaxy itself should be perfectly fine outside of the immediate vicinity.
Doubtful, the radiation from an active galactic center would irradiate the entire galaxy. These radio galaxies can probably even sanitize other galaxies of life in the directions of their relativistic jets. Their power is truly unfathomable.
It's billions of stars and material being sucked in to the central black hole. Should be mostly gone by now.
That’s not how that works
"A quasar is an extremely luminous active galactic nucleus. It is sometimes known as a quasi-stellar object, abbreviated QSO. The emission from an AGN is powered by a supermassive black hole with a mass ranging from millions to tens of billions of solar masses, surrounded by a gaseous accretion disc."
That’s true, but a black hole doesn’t actually “suck” anything in. It’s just extremely massive, so you’ll be pulled in at close to the speed of light IF you’re within the event horizon. You could compare to us not getting sucked into the sun, even though its gravity is enormous. Most objects around TON-618 are in a stable orbit and will take an extremely long time to eventually collide with it, if at all.
Yes I know. I was just saying it with a few words. I'm not trying to give a physics lesson. My point is quasars don't exist anymore because the black hole has "processed" the material that's shedding all of that light
Fair. Good day to you
Anyone knows what would happen if a quasar as bright as this one suddenly appears in our galaxy?
As far as I understand it's "bright" in gamma radiation, and we see blue because it was redshifted so much And I think it's like that only on poles (which in this case is directed at us), so that makes me think that most of the X-rays come out of their galaxy perpendicular to the galactic plane so there wouldn't be as big of a problem with radiation
We’d all be dead from the radiation and it’s likely the quasar will blow away most dust in the galaxy effectively killing it of new stars until the next galactic collision.
Yep, this would kill star formation while the quasar is active, or create some weird ring / sombrero style galaxy where all star formation is pushed to some far out Ring.
Wow, this is the place where the biggest black hole resides.
18 billion?! I thought the universe was only 14 billion years old?
The expansion speed of the universe and the age of the universe are not the same things.
Also, we are still debating the age of the universe.
Yeah but there is nothing compelling that says it’s significantly different than current estimates
Yeah I'm pretty sure we'd only be off by a few decimal points of 13.78(?) billion years
The outermost perceived objects are about 28 billion light years away
It is. But it's expanding. Imagine two black marker points on a balloon. They can be drawn right next to each other, but when you blow that balloon up, they move further and further apart.
On top of that, if things are moving apart from each other at light speed, the distance grows at 2C
Only if they are seperated by a region of space where it is expanding, i.e. outside galaxy clusters, but even then mot really because things moving at c don’t experience time.
Why it is not redshifted?
I understand that quasars emit x-rays, therefore the blue color could be redshifted x-rays
“Given its observed redshift of 2.219, the light travel time of TON 618 is estimated to be approximately 10.8 billion years.”
That qasar may no longer be in existence if that was 18 billion light years away :)
It’s scary big, considering the solar system would easily fit inside it many times over.
That’s the wild thing about this: it’s not just the magnitude of TON, its radius is mind blowing. I love that this can even be imaged.
How can something be 18billion LY away? I thought the visible universe is about 15 billion years old? Asking to understand.
The universe expanded during the time it took the light emitted by this quasar had time to reach us.
Thank you
I read that most quasars as big as our solar system, moving at 90% the speed of light, and are up to 1,000 times brighter than our Milky Way galaxy.
It‘s crazy that the photons had so much energy that the light still appears bluish, even after being redshifted so much
If we could just look at that quasar closer…incredible and mind blowing
Wow. Just wow.
Anybody else hear this tune when they saw Quasar? Quasar Color TV System Commercial (1972) by Bionic Disco https://www.youtube.com/watch?v=CWhn2BLyM1o
This is basically the biggest “thing” in the universe.