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(Headlines & Global News)   Scientists announce black holes may have hair down there   (hngn.com) divider line 39
    More: Obvious, black holes, universe, angular momentum, gravitational wave, relativity  
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3993 clicks; posted to Geek » on 30 Sep 2013 at 4:10 PM (1 year ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



39 Comments   (+0 »)
   
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ZAZ [TotalFark]
2013-09-30 03:56:12 PM
If I understand this correctly, they have an alternative theory of gravitation with extra parameters that reduces to General Relativity under most conditions, including all we have ever been able to observe.
 
2013-09-30 04:20:13 PM
Also means no worm holes are possible if true. It would be just a bunch of squeezed matter.  squish
 
2013-09-30 04:29:01 PM
Which species are we talking about?
 
2013-09-30 04:31:07 PM
In addition to hairy black holes, I once attended a serious talk about "black holes with naked crotches".  The speaker didn't notice any humor in it.

(Explanation:  a spacetime diagram of two merging black holes is called a "pants diagram" for obvious reasons once you look at one.  The point of merger is therefore the "crotch" of the diagram.  A "naked singularity" is one that isn't surrounded by an event horizon, i.e. a black hole.  The talk was about some hypothetical scenario in which the horizon disappeared at the point of merger.)
 
2013-09-30 04:41:58 PM
I've never heard of the International School for Advanced Studies in Italy. Is it a home for researchers with low reputations? I also found that one part of it is the Abdus Salam International Centre for Theoretical Physics (ICTP)  named to honor Abdus Salam, the only Pakistani and 1 of the only 2 Muslims to win a science Nobel Prize.
 
2013-09-30 04:46:30 PM

HairBolus: I've never heard of the International School for Advanced Studies in Italy. Is it a home for researchers with low reputations? I also found that one part of it is the Abdus Salam International Centre for Theoretical Physics (ICTP)  named to honor Abdus Salam, the only Pakistani and 1 of the only 2 Muslims to win a science Nobel Prize.


That's not a hair question.
 
2013-09-30 04:48:23 PM
But do they have stars upon thars?
 
2013-09-30 04:51:39 PM
Pants full of macaroni!!


But do they have stars upon thars?

Vajazzled?
 
2013-09-30 04:52:51 PM

Pants full of macaroni!!: But do they have stars upon thars?


That's racist

/sneetch
 
2013-09-30 05:16:48 PM
whatculture.com
Down where?
 
2013-09-30 05:20:47 PM

HairBolus: I've never heard of the International School for Advanced Studies in Italy. Is it a home for researchers with low reputations? I also found that one part of it is the Abdus Salam International Centre for Theoretical Physics (ICTP)  named to honor Abdus Salam, the only Pakistani and 1 of the only 2 Muslims to win a science Nobel Prize.


ICTP is prestigious.  I don't know much about SISSA, but I seem to recall seeing that institution on reasonable papers back when I was working more in those areas.
 
2013-09-30 05:45:36 PM
I guess we all know what Brazil's next research satellite is going to be doing...
 
2013-09-30 05:51:43 PM
Well at least we know what all those X-rays shooting out from them are now.
 
2013-09-30 05:51:46 PM
I want to go on record here of being 100% in favor or bald black holes. The hairy ones are kind of scratchy.
 
2013-09-30 06:10:07 PM
The study came to this conclusion using tools called interferometers, which can read and measure gravitational waves.

I thought we've never detected gravity waves. Maybe gravitational waves are something different?
 
2013-09-30 06:12:41 PM
Translated into English:

There is a class of extensions to General Relativity that makes slightly different predictions about black holes from standard GR. These physicists have done detailed calculations that enabled them to make predictions that would allow us to distinguish the two if and when we have sufficiently sensitive gravity wave detectors.

So it's pretty cool stuff, but it's going to be a couple of years at least before we know whether the extensions are correct.
 
2013-09-30 06:23:43 PM

sxacho: The study came to this conclusion using tools called interferometers, which can read and measure gravitational waves.

I thought we've never detected gravity waves. Maybe gravitational waves are something different?


Interferometers are designed to detect gravitational waves, but have not yet done so.  This is a theoretical study.  Gravity waves are unrelated phenomena in geophysical fluid dynamics.
 
2013-09-30 06:27:21 PM

Pants full of macaroni!!: But do they have stars upon thars?


....your name is strangely appropriate to that pants diagram.
 
2013-09-30 06:36:17 PM
Mmmmm...............nothing better than a hairy black hole.    once you go black, you never go back.
 
2013-09-30 06:37:22 PM
Worms and Holes????


Astronomers are the Perverts of the Universe.
 
2013-09-30 06:55:32 PM

Ambitwistor: sxacho: The study came to this conclusion using tools called interferometers, which can read and measure gravitational waves.

I thought we've never detected gravity waves. Maybe gravitational waves are something different?

Interferometers are designed to detect gravitational waves, but have not yet done so.  This is a theoretical study.  Gravity waves are unrelated phenomena in geophysical fluid dynamics.


Right. Thank you. So what the hell is this all about then? Chalk another one up to bad science journalism, I guess?

On an aside, I don't think gravitational waves will ever be detected unless we can polarize them somehow and look at them in 2D, but I don't really know what I'm talking about
 
2013-09-30 07:04:22 PM

HairBolus: Is it a home for researchers with low reputations?


It's actually a good institution, just hasn't been around all that long and thus isn't something people outside of a few fields have encountered yet.
 
2013-09-30 07:32:12 PM
only on my super-8 and some early vhs.
 
2013-09-30 08:01:26 PM
Decent people shouldn't think too much about that
 
2013-09-30 08:08:17 PM
So play ball?
 
2013-09-30 08:16:18 PM
img.pr0gramm.com
 
2013-09-30 08:19:58 PM

worlddan: I want to go on record here of being 100% in favor or bald black holes. The hairy ones are kind of scratchy.


i.qkme.me
 
2013-09-30 09:18:35 PM

czetie: Translated into English:

There is a class of extensions to General Relativity that makes slightly different predictions about black holes from standard GR. These physicists have done detailed calculations that enabled them to make predictions that would allow us to distinguish the two if and when we have sufficiently sensitive gravity wave detectors.

So it's pretty cool stuff, but it's going to be a couple of years at least before we know whether the extensions are correct.


Thank you very much for splainin' that thar article.
 
2013-09-30 09:21:25 PM

Suckmaster Burstingfoam: czetie: Translated into English:

There is a class of extensions to General Relativity that makes slightly different predictions about black holes from standard GR. These physicists have done detailed calculations that enabled them to make predictions that would allow us to distinguish the two if and when we have sufficiently sensitive gravity wave detectors.

So it's pretty cool stuff, but it's going to be a couple of years at least before we know whether the extensions are correct.

Thank you very much for splainin' that thar article.


...except that, as Ambitwistor noted, I should have said "gravitational wave" rather than "gravity wave", strictly speaking (although I think the informal meaning still comes across).
 
2013-09-30 09:30:22 PM
 
2013-09-30 09:33:28 PM

AbiNormal: What a hairy black hole may look like


Not that it wasn't obvious to me before I clicked on it, but normally we prefer to caveat that sort of link with a big fat black NSFW.

Just sayin'.

/also, we prefer more attractive nudes
 
2013-09-30 10:12:30 PM
So string theory has turned into hair theory?
 
2013-09-30 10:28:17 PM

Ambitwistor: In addition to hairy black holes, I once attended a serious talk about "black holes with naked crotches".  The speaker didn't notice any humor in it.

(Explanation:  a spacetime diagram of two merging black holes is called a "pants diagram" for obvious reasons once you look at one.  The point of merger is therefore the "crotch" of the diagram.  A "naked singularity" is one that isn't surrounded by an event horizon, i.e. a black hole.  The talk was about some hypothetical scenario in which the horizon disappeared at the point of merger.)


I may never live to see it, but I hope so, so much that the agency sticking the first probe into a black hole is named something along the lines of United Federation of Interstellar Astronomers

/and also the probe looks like a hand with an extended but slightly crooked index finger
 
2013-09-30 10:29:32 PM
I don't understand why people think that they are not already inside of a black hole.

Right now.

Everything has already happened.

Your brains, while still conscious, are just processing reality on a scale that is only relative to yourself.

Time happened in an instant before you were born and you are incapable of realizing it. When you are dead the rest of the universe passes by at a speed that you can not ever comprehend.
 
2013-09-30 11:38:04 PM

ArcadianRefugee: AbiNormal: What a hairy black hole may look like

Not that it wasn't obvious to me before I clicked on it, but normally we prefer to caveat that sort of link with a big fat black NSFW.

Just sayin'.

/also, we prefer more attractive nudes


Sorry 'bout that.
 
2013-09-30 11:46:24 PM

mrlewish: Also means no worm holes are possible if true. It would be just a bunch of squeezed matter.  squish


We should vote.

I vote for wormholes.

I am in the pro wormhole faction.
 
2013-10-01 12:12:27 AM
I like a little bit of hair down there, don't want to confuse her for a 12 year old.
 
2013-10-01 01:14:48 AM

fisker: I don't understand why people think that they are not already inside of a black hole.

Right now.

Everything has already happened.

Your brains, while still conscious, are just processing reality on a scale that is only relative to yourself.

Time happened in an instant before you were born and you are incapable of realizing it. When you are dead the rest of the universe passes by at a speed that you can not ever comprehend.


Cool, you sound like Sovereign from Mass Effect.
 
2013-10-01 05:04:23 AM

worlddan: I want to go on record here of being 100% in favor or bald black holes. The hairy ones are kind of scratchy.


My favorite black hole is (a younger) Lacey Duvalles.  I've done extensive research and it has no hair.
 
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