Mystery Object in Space: A Rogue Black Hole or Strange Supernova?

[Dryson]

Mystery Object in Space: A Rogue Black Hole or Strange Supernova?

An object previously thought to be a supernova may actually be a black hole ejected from its home galaxy.
Further observation should provide a definitive answer, but whatever the outcome, the object is unique: If it is a supernova, it's a new breed that radiates for decades, while most supernovas burn out in less than a year. If it's a black hole, it appears to be the product of two black holes that collided, and were simultaneously ejected from their merging parent galaxies "This could be a new type of supernova that we've just never seen before. But it would have to be one of the most extreme cases ever observed," said astronomer Michael Koss, who is leading the research. On the other hand, Koss said it could provide all new information about traveling black holes "Whatever we find, it's exciting."

http://www.space.com/27812-rogue-black-hole-strange-supernova.html

The question I have is this. If a black hole is ejected from our Universe into the void on the outside of our Universe what would happen to the black hole as well as the space that the black hole occupies?

 

[Silvercrest]

The question doesn't make sense. "Ejected from our universe" is a concept that doesn't mean anything. You'll have to define what you mean, plus explain what would be doing the ejecting.

 

[Dryson]

You will have to read the article to understand.

 

[Mike Farley]

There is no "outside" of the Universe. If it's a place, then, by definition, it's part of the Universe.

 

[Silvercrest]

You will have to read the article to understand.

I read the article. It doesn't mention ejecting anything from the universe.

You're either misunderstanding the article, misquoting the article, or going into concepts that the article doesn't cover.

There is no "outside" of the Universe. If it's a place, then, by definition, it's part of the Universe.

I'll run with it as long as he can explain what he's talking about. Unfortunately the track record there is not encouraging.

Dryson, do you mean ejecting something outside our GALAXY? (Not our universe.)

 

[Trekker4747]

It "might" be "possible" for there to be a "beyond our universe." There's the Observable Universe and then there's the universe and the latter is vastly larger than the former.

It's just that not enough time (ever) has passed for the further points of the universe to reach us and many theories have the notion that the "outer edge" of the universe, and the mass in it, is speeding away and expanding faster than the speed of light. (I guess, think of viewing an explosion with a slow-motion camera. You'll usually see a shockwave moving pass before seeing the plasma of the fire/explosion moving pass.) The shockwave moving greater than the speed of sound and plasma ever slightly slower. The fire being the Observable Universe but the shockwave being The Universe.

It *might* be that there's something even beyond that "shockwave" because -in theory- in the universe is expanding into something. But we can never know what is beyond it or even, really, what the edge of the universe looks like because things are moving far too fast or light to escape it.

 

[Robert Maxwell]

I don't think that's what Dryson meant.

 

[Dryson]

It "might" be "possible" for there to be a "beyond our universe." There's the Observable Universe and then there's the universe and the latter is vastly larger than the former.

It's just that not enough time (ever) has passed for the further points of the universe to reach us and many theories have the notion that the "outer edge" of the universe, and the mass in it, is speeding away and expanding faster than the speed of light. (I guess, think of viewing an explosion with a slow-motion camera. You'll usually see a shockwave moving pass before seeing the plasma of the fire/explosion moving pass.) The shockwave moving greater than the speed of sound and plasma ever slightly slower. The fire being the Observable Universe but the shockwave being The Universe.

It *might* be that there's something even beyond that "shockwave" because -in theory- in the universe is expanding into something. But we can never know what is beyond it or even, really, what the edge of the universe looks like because things are moving far too fast or light to escape it.

The reason I ask is because of all of the images I have ever seen of our Universe there is nothing on the outside of it. But like you said if the Universe is expanding, which it is then it has to be expanding into something.

 

[Silvercrest]

Not necessarily! The universe isn't just the stars and stuff that inhabit it, but also the volume of space that it occupies. As the universe expands, more volume is created (and more room for the stars and stuff). But it isn't expanding into an existing volume. That's the pitfall of thinking of it that way.

And you have to remember that any images you've seen are artistic renditions and are subject to artistic license-- to a degree that it's impossible to estimate. You'll do better to avoid basing any conclusions or theories on that.

 

[Metryq]

And you have to remember that any images you've seen are artistic renditions and are subject to artistic license

I regularly see articles with such artistic renderings (of black holes, gravitational lensing, etc.) that are not captioned as such, so confusion from laymen is understandable.

 

[HIjol]

From Drysons Original Post

An object previously thought to be a supernova may actually be a black hole ejected from its home galaxy.



The recoil in a black hole merger would come from gravitational waves, which are ripples in space-time, said Koss.

HIjol:
(Could he be a Fellow at the Doc Brown Institute for Problems With the Earth's Gravitational Field, (DBIP-WEGF)

But how would the holes collide in the first place? I would think they would destroy one another or one would subsume the other?!

On the other hand, Koss said it could provide all new information about traveling black holes (don't...it's too easy!)

(Koss, a postdoctoral fellow with the Swiss National Science Foundation.)

There is one more possibility for SDSS113. If it is neither a black hole nor a new kind of supernova, it could be an unusual type of star called a luminous blue variable (LBV). These massive stars periodically undergo enormous eruptions, spewing large amounts of matter into space. Eventually, they explode as supernovas.
Follow Calla Cofield @callacofield. Follow us @Spacedotcom, Facebook and Google+. Original article on Space.com.