Well the 'dot', as you put it, doesn't change size depending on the mass of the black hole (well, for a Schwarzschild black hole at least). It's just that, a dot. The event horizon does however.
The 'size' of the black hole is defined by the event horizon.
[QUOTE=sltungle;38651448]Well the 'dot', as you put it, doesn't change size depending on the mass of the black hole (well, for a Schwarzschild black hole at least). It's just that, a dot. The event horizon does however.
The 'size' of the black hole is defined by the event horizon.[/QUOTE]
My understanding about it was that the size of the actual 'dot' would differ per amount of mass reduced to their absolute point of density. The bigger the sun, for example, going supernova and collapsing onto itself the bigger the 'dot' and Event Horizon.
The Event Horizon being the biggest definer of size regarding a black hole. Whilest the center of the black hole, the object providing the immense gravity, could differ in size.
Then again, it's been years since I last had anything to do with black holes and similar stuff. So I could very well be wrong about it all.
God damn space will never not be awesome
Jesus. 14 percent of the [i]entire[/i] galaxies mass? We're talking about including the other black holes that reside there. That thing is so unimaginaly large it's mind-boggling. The size of the galaxy itself would have to be insane too, considering the gravity is so strong it would destroy a galaxy more akin to our's size.
[QUOTE=Pilotguy97;38650679]Now if the blue star was VY Canis Majoris, the big one would probably be about the size of this black hole.[/QUOTE]
I did a quick scale in mspaint
[IMG]http://filesmelt.com/dl/canis_majoris_vs_supermassive_black_hole.jpg[/IMG]
canis majoris is the small red dot on the left vs the supermassive black hole
[img]http://www.utexas.edu/news/files/NGC1277_diagram-1024x906.jpg[/img]
To put things in perspective.
[QUOTE=soad_jonas;38651643]
To put things in perspective.[/QUOTE]
That's so goddamn big that, I mean, dickety christ
250 mil light years does not feel like enough buffer space because something like that is [i]still growing[/i]
I don't know whether they calculated the mass directly from the data or extrapolated using math that is far beyond me, but if it's the former, that's only how big it was two hundred and fifty million years ago. It's had that much time to expand.
That is something that scares me
This thread is making me feel tiny
snip
And they say, there is always something bigger then you.
[QUOTE=soad_jonas;38651643][img]http://www.utexas.edu/news/files/NGC1277_diagram-1024x906.jpg[/img]
To put things in perspective.[/QUOTE]
Lets nose dive into that mother fucker
[QUOTE=soad_jonas;38651643][img]http://www.utexas.edu/news/files/NGC1277_diagram-1024x906.jpg[/img]
To put things in perspective.[/QUOTE]
That is...terrifying. Let's hope it doesn't come toward us anytime soon.
[QUOTE=NinjaS;38652080]And they say, there is always something bigger then you.[/QUOTE]
And thankfully the bigger they are, the harder they fall
except there's no gravity in space so we're just fucked
[QUOTE=NinjaS;38652080]And they say, there is always something bigger then you.[/QUOTE]
[media]http://www.youtube.com/watch?v=AJOVUF-HaDw[/media]
why did i look at the title and see Monster black dick is biggest ever found?
[QUOTE=sltungle;38651358]For a Kerr black hole (most likely black hole to exist, has angular momentum) the 'singularity' is a little more complex and sketchy to say the least. Suffice it to say, I don't think it's considered a 'true' singularity as you can eliminate the appearance of a singularity by choosing a different coordinate system (physicists like to mess with coordinate systems to simplify things).[/QUOTE]
What? Singularities are tested for with differmorphism-invariant scalars. If they blow up to infinity you can't make it go away with a coordinate change.
[editline]30th November 2012[/editline]
Oh wait yeah I forgot the Kerr solution has coordinate singularities
Pretty sure the Kerr solution must have a real singularity though since all black holes do as far as we know
[editline]30th November 2012[/editline]
[QUOTE=sltungle;38651358]That said, I was under the impression that the singularity in a Kerr black hole was a ring with zero thickness which, at a glance would suggest zero volume (and hence a singularity), but... since when does intuition work with complex physics? Then again, 'singularity' would imply absolute lack of ANY dimensions, and a ring (even with zero thickness) evidently has some dimension ('length' if you will), so I suppose that fits with the idea that it isn't a true singularity.[/QUOTE]
The Kerr singularity is weird as shit.
My professor in GR was talking about it and saying some weird stuff and someone was like, "But wait, so what actually happens when you hit the point r = 0?"
And the professor was like, "r = 0 isn't a point. Shit, that's gonna take some explaining."
[editline]30th November 2012[/editline]
[QUOTE=thrawn2787;38651040]My knowledge of this stuff is really limited but isn't the black hole itself just a dot in space (a singularity)? So this article is a big misleading in that the event horizon is really big, not the black hole itself[/QUOTE]
A black hole is actually defined as the whole region of space that is enclosed in an event horizon.
Supermassive-r
There's a bigger one somewhere out there. There's always something bigger.
This isn't exactly related to the Black Hole but its to do with size.
[url]http://htwins.net/scale2/[/url]
[QUOTE=Jurikuer;38652609]That is...terrifying. Let's hope it doesn't come toward us anytime soon.[/QUOTE]
It's 250 million light-years away, so I don't think that's anything to worry about.
[QUOTE=NinjaS;38652080]And they say, there is always something bigger then you.[/QUOTE]
Its like that thing where a bigger fish eats a smaller fish but is stopped when an even bigger fish approaches and swallows him up. Then the process repeats again and again.
[QUOTE=thefreeman;38651260]Damn space, you scary.[/QUOTE]
I would say some dark ghetto alleyway where you are likely to get mugged and murdered is scarier than a black hole.. in space.
Something just occurred to me. Correct me if I'm wrong (chances are I am), but black holes release energy over time and the larger the black hole the more energy that escapes it. Some black holes fire off immense amounts of energy as jets. Why doesn't this one?
[QUOTE=Jurikuer;38653318]Something just occurred to me. Correct me if I'm wrong (chances are I am), but black holes release energy over time and the larger the black hole the more energy that escapes it. Some black holes fire off immense amounts of energy as jets. Why doesn't this one?[/QUOTE]
The jet isn't related to release of energy from the black hole itself. It's material that's still outside that gets collected into those jets. Not all black holes have those jets and we don't know how they form yet so it's still hard to say why. Also, black holes actually radiate more power the smaller they are.
[QUOTE=Mrglitch2000;38653103]This isn't exactly related to the Black Hole but its to do with size.
[url]http://htwins.net/scale2/[/url][/QUOTE]
for some reason it did not show the Cosmic Web
also
[mEdia]http://www.youtube.com/watch?v=eI9CvipHl_c[/mEdia]
Don't black holes "erupt" after a while? Something like a Gamma Ray Burst or something?
the most powerful force in the universe known to man thus far?
[I]metal[/I]
Jesus fuck 17 billion suns.
Space is awesome yet scary.
I guess the 'size' of a black hole is defined by the radius at which the event horizon is located? Since technically all its mass is in a single point.
[QUOTE=Program Files;38650662]I never imagined that something could be bigger then VY Canis Majoris, possibilities are endless it seems.[/QUOTE]
You can't really compare a black hole to a star or planet. It's basically an area, not a body.
[QUOTE=Program Files;38650611]I wonder if this is bigger then [URL="http://en.wikipedia.org/wiki/VY_Canis_Majoris"]VY Canis Majoris[/URL].[/QUOTE]
Christ.
It's so big, and such a huge distance away, so much that we can't even see it from Earth.
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