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Enormous Black Hole Discovered

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11-28-2012, 05:47 PM
  #1
BenchBrawl
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Enormous Black Hole Discovered

http://www.ibtimes.com/bigger-more-p...covered-906722

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11-28-2012, 05:50 PM
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The Russian General
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The size of these objects is mind blowing really. How ****ing big is that?! How ****ing small are we?

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11-28-2012, 07:06 PM
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It's pretty big.

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11-28-2012, 08:43 PM
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The universe is clearly overcompensating for something.

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11-29-2012, 08:55 AM
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17 Billion times the size of our sun. I"m having trouble translating that to something i can comprehend.

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11-29-2012, 11:57 AM
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I read this last night but didn't comment. I've been thinking about it all day. Something that big, but also that dense?

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11-29-2012, 02:02 PM
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Quote:
Originally Posted by xX Hot Fuss View Post
17 Billion times the size of our sun. I"m having trouble translating that to something i can comprehend.
Mass, not size



schwarzschild radius of a black hole with mass 17,000,000,000*m_sun is:

http://www.wolframalpha.com/input/?i=2+*+G+*+%2817000000000*1.989E30+kg%29+%2F+c^2







Note that it is completely expected for an object that heavy to be a black hole, since:

the schwarzchild radius is proportional to the mass, which is (for constant density) proportional to the cube of the radius

that is to say, for an object of constant density, the schwarzchild radius grows much faster than the [regular] radius


Last edited by Unaffiliated: 11-29-2012 at 02:13 PM.
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11-29-2012, 05:22 PM
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The event horizon is 4 light days across?!?!

The event horizon is the point at which you can no longer escape the gravity of a black hole. Even traveling the speed of light won't get you away from it. And this black hole's event horizon is 4 LIGHT DAYS across.
103,608,273,000km across.
8,122,316 Earths across
75,078 Suns across

Wow.


Last edited by Joseppi: 11-29-2012 at 05:27 PM.
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11-29-2012, 06:12 PM
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What is almost always as impressive to me is the fact that every time I read one of these stories, I am reminded that we actually have the technology to observe this. I couldn't imagine the work that goes into building a telescope that can observe things galaxies away.

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11-29-2012, 06:35 PM
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Umm... wow.

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11-29-2012, 10:01 PM
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I read a BBC article that said this is as big as our solar system. That's mind bogglingly huge for a black hole.

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11-30-2012, 02:19 AM
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Clearing something up a little here:

The Schwarzchild radius or event horizon is the distance from the singularity where nothing can escape. This is kind of the "effective" size of the black hole.

The actual mass of a black hole is all in a single point. So you can think of the "size" of all black holes being the same: 0.

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11-30-2012, 08:59 AM
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Sounds like they've found my bank account.

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11-30-2012, 11:07 AM
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Man, I thought this thread would have been about the NHLPA...

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11-30-2012, 11:09 AM
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Quote:
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Sounds like they've found my bank account.
Hahahaha, this made my day and i‘m not even sure why!!

But in all seriousness, could this be the black hole that‘s “supposed“ to bring the end of the world in about 3 weeks? Seems quite convenient that they‘d find it with less than a month left.

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11-30-2012, 11:36 AM
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Are there any stars that are big enough to go supernova and cause a black hole of this size? This seems very unprecedented.

It also makes you realize that, if a black hole appeared anywhere close to our solar system, we are screwed (unless nuking black holes works).

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11-30-2012, 12:11 PM
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Quote:
Originally Posted by Plan The Parade View Post
Are there any stars that are big enough to go supernova and cause a black hole of this size? This seems very unprecedented.

It also makes you realize that, if a black hole appeared anywhere close to our solar system, we are screwed (unless nuking black holes works).
Here's something that I'll add to the common misconceptions thread.

Black holes are not magic vaccuum cleaners. If faraway giant star does not have enough mass right now to suck in the earth, then it will still not have enough mass to suck in the earth when it collapses.



If the sun somehow turned into a black hole with the exact same mass, none of the planets would be sucked in. The orbits would be almost the exact same.

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11-30-2012, 09:08 PM
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Quote:
Originally Posted by Plan The Parade View Post
Are there any stars that are big enough to go supernova and cause a black hole of this size? This seems very unprecedented.

It also makes you realize that, if a black hole appeared anywhere close to our solar system, we are screwed (unless nuking black holes works).
Nope. It's thought that the upper limit for star formation is 150 solar masses. A 265 solar mass star has been observed, though given the circumstances of its location, collisions and potentially a merging of a close binary partner likely played a part in its grotesque size

Keep in mind that black holes can feed and merge with one another. The real question is how it managed to gobble up as much as it did

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11-30-2012, 10:09 PM
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Quote:
Originally Posted by Unaffiliated View Post
Here's something that I'll add to the common misconceptions thread.

Black holes are not magic vaccuum cleaners. If faraway giant star does not have enough mass right now to suck in the earth, then it will still not have enough mass to suck in the earth when it collapses.



If the sun somehow turned into a black hole with the exact same mass, none of the planets would be sucked in. The orbits would be almost the exact same.
but black holes still move about the universe, no? So one could be headed our way and everything within four light-days of us would be sucked into an area the size of a Rubiks Cube.

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12-01-2012, 01:05 AM
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but black holes still move about the universe, no? So one could be headed our way and everything within four light-days of us would be sucked into an area the size of a Rubiks Cube.
But they still follow the same geodesics. If they collide with us, they would have collided anyway. And we probably would have died anyway.

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12-01-2012, 05:45 PM
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Wow that's absolutely insane.

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12-01-2012, 07:46 PM
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Quote:
Originally Posted by WarriorOfGandhi View Post
but black holes still move about the universe, no? So one could be headed our way and everything within four light-days of us would be sucked into an area the size of a Rubiks Cube.
We'd see it LONG before it got to that point. Black holes emit absolutely horrendous amounts of x-rays, and we have satellites observing exactly that. Nothing to be worried about on that front

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12-01-2012, 08:59 PM
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We'd see it LONG before it got to that point. Black holes emit absolutely horrendous amounts of x-rays, and we have satellites observing exactly that. Nothing to be worried about on that front
No they don't...

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12-02-2012, 04:31 PM
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No they don't...
My apologies, I should've been more specific. The accretion disks of black holes emit huge amounts of x-rays. I can only imagine the size of the disk on a black hole this size.

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12-02-2012, 04:38 PM
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It's like, how much blacker could this hole be? And the answer is none. None more black.

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