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A Naked Black Hole Is Screaming Through the Universe (gizmodo.com)
New submitter PongoX11 writes: Millions of years ago, B3 1715+425 was just an ordinary supermassive black hole. It had a comfortable life, of devouring stars and belching deadly x-rays, at the center of its distant galaxy. Now, starless and alone, it's screaming through space at 2,000 kilometers per second -- and it may never stop. BC 1715+425's troubles began when its galaxy bumped up against another. This isn't all that unusual: in fact, astronomers believe that the largest galaxies in our universe formed during ancient mergers. Normally, when two galaxies collide, the supermassive black holes at their centers start to orbit one another, moving closer and closer together in an inescapable gravitational attraction. Eventually, those black holes can fuse, releasing a burst of energy as gravitational waves and completing the cosmic joining. Most of the time, this process seems to work out for all parties involved, judging from the fact that nearly all supermassive black holes reside at the center of galaxies, and nearly all galactic centers contain a supermassive black hole. But every now and then, something goes wrong and cosmic wreckage ensues. B3 1715+425, speeding away from the core of a bloated galactic merger 2 billion light years from Earth, is living proof of this. The working theory is that millions of years ago, B3 1715+425's galaxy passed through a much larger galaxy (one that had formed during many previous mergers) and got shredded to bits, a bit like a paper airplane flying into a hurricane. The leftovers include a faint galactic remnant, just 3,000 light years across, and the supermassive black hole itself, nearly naked and hemorrhaging ionized gas as it tears through the void. "We were looking for orbiting pairs of supermassive black holes, with one offset from the center of a galaxy, as telltale evidence of a previous galaxy merger," said James Condon, the astronomer at the National Radio Astronomy Observatory who led the study. "Instead, we found this black hole fleeing from the larger galaxy and leaving a trail of debris behind it."
Why is it the heavier they are the more they like running around naked?
Normally, when two galaxies collide, the supermassive black holes at their centers start to orbit one another, moving closer and closer together in an inescapable gravitational attraction.
I don't see how this can be true. If our galaxy collided with another, both black holes would plough on, on their own trajectories. Even if they came close enough to interact, they would be well above each other's escape velocity and so would continue while the gas clouds in their galaxies formed a new galaxy.
http://michaelsmith.id.au
Would this produce any gravity waves that we can detect?
> it's screaming through space at 2,000 kilometers per second -- and it may never stop.
Wow. It must be hitting hard its gas pedal.
Bad, bad science journalism. Bad.
Normally, when two galaxies collide, the supermassive black holes at their centers start to orbit one another, moving closer and closer together in an inescapable gravitational attraction.
That's how I met my girlfriend.
If you want news from today, you have to come back tomorrow.
I could have said it better myself.
Whatever information escapes from the naked screaming black hole, is Too Much Information.
The collision must have happened more than 2 billion years ago, or we wouldn't know about it yet.
Speaking of galactic collisions, theres a new eBook out from Ian Douglas called Altered Starscape
(Ian Douglas is the author of the Star Carrier series and also writes under his real name of William H Keith)
This new series is called "Andromeda Dark" so its probably not much of a spoiler to tell you that the other galaxy involved is M31
Highly recommended for fans of Space Fleet / Galactic Empire science fiction
I would have thought "A Naked Black Hole Is STREAKING Through the Universe" would have been the obvious headline.
On the other hand I grew up in the 60's-70's...
Do you think tether five, that half another can't for it? I sure'd hate to shan't when ain't have none to weather tree fault illumination. Shivers!
You insensitive clods! When you go naked, go all naked, black holes, and defy the physics as we know it!
The title of this post is annoying. As is usually the case these days, of course.
But in this case it's particularly annoying since it "hints" at this being at least related to a naked singularity. Something which would be very interesting indeed.
And "screaming"? At 2000 km/s? No.
Bad Slashdot.
s/Screaming/Streaking/
A Naked Black Hole Is Streaking Through the Universe
There, that's better.
Specialist Mac support for creative pros, Melbourne
This thing is not completely 'naked', it can still be detected via this gas cloud that surrounds it and if something like this object (not necessarily supermassive) was headed our way, it would presumably be detectable long before it arrived. A completely naked black hole would be essentially undetectable until it was pretty close to our solar system... or wouldn't it. Anyway, this got me thinking about how likely it is that a black hole hurtling through space would be completely 'naked' i.e. completely invisible?
Yes, I know, I'm on priceline booking a one-way ticket to hell right now...
Um, a naked black hole is actually a very specific thing (a singularity without an event horizon) that may or may not even exist in nature. Just skimming the article, this sounds like an ordinary black hole to me.
Just a regular, hairless yet non-naked black hole. That's what it sounds like.
I get so sick of these Allen Ginsberg wannabes.
As they say in Bayonne, New Jersey, "Who gives a shit?"
It's a bum rap. THe rest of the universe is moving. It's staying still.
Some drink at the fountain of knowledge. Others just gargle.
So close to the US election in which Sudden Meteor of Death is a candidate?? Hmmmmmm
...but it was too late.
Just hope it's streaking away from us and not towards us...
We'd need to be a bit further away than that.
Where do I point my telescope?
It must have been something you assimilated. . . .
It's the most horrible time of the year.
With the nights getting longer,
The evil is stronger,
And there's much to fear.
It's the most horrible time of the year.
It's the unhappiest season of all.
When your knuckles are whitening
From visions so frightening
You must not recall.
It's the unhappiest season of all.
Great Cthulhu is calling
And sanity's falling
And cultists are roaming the land.
With the darkness descending
Our destiny's bending
To forces we can't understand.
It's the most horrible time of the year.
There'll be ritual killing
And omens fulfilling
As Old Ones appear!
It's the most horrible time of the year.
clicky
How am I supposed to take seriously any article about astronomy that says "screaming through space at 2,000 kilometers per second." Relative to what? Am I missing something here?
So, the name black hole comes from the fact that this object is so massive, nothing can escape its gravitational pull, even light. So, how is it "belching deadly x-rays" or even "hemorrhaging ionized gas"?! Would something escaping it render this object not a black hole any more?
The Holy Coran forbids naked singularity in public.
Must...resist...Trump...joke
Table-ized A.I.
The Playboy web site will have to start an astronomy section.
In space, no one can hear you scream.
>It's headed our way and I blame Hillary.
Bunk.
It's turtles all the way down.
This would be bigger problem than the typical asteroid impact.
It's hard to push a black hole (even a little.) Whatever you push with just gets sucked in.
Oh I do fail it. I fail it so much. You are so right . . . so right.
Shouldn't that be "Streaking Through the Universe"?
The working theory is that (it) got shredded to bits, a bit like a paper airplane flying into a hurricane. The leftovers include... the supermassive black hole itself
Please can we call it Goatse?
For the record, whoever posted this didn't bother to check their terminology.
"Naked", in the context of a black hole, means the singularity is unmasked by an event horizon. It is generally considered impossible, and some of the reasons why were among Hawking's better known works, among the other usual suspects. The mass of these concepts is known as the cosmic censorship hypothesis.
This article is not about a naked black hole. It's just a black hole.
Thanks, new submitter PongoX11! I appreciate the interesting find.
Sub: WISDOM- universe and Origins.
Psychology of Black-holes mislead spirit of Science advancement
Chaos, anarchy and confusion- simulated Universe - trap minds with Ego and no Vision.
gravity is like Frog's well . one cannot throw away the space baby in a well -backyard grave nor in Galactic Centre-simulated blackhole.
www [dot]lulu [dot]com-spotlight-jnani108