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Black holes' magnetism surprisingly wimpy
ScienceDaily ^ | 12/7/17

Posted on 12/07/2017 2:52:50 PM PST by LibWhacker

Black holes are famous for their muscle: an intense gravitational pull known to gobble up entire stars and launch streams of matter into space at almost the speed of light.

It turns out the reality may not live up to the hype.

In a paper published today in the journal Science, University of Florida scientists have discovered these tears in the fabric of the universe have significantly weaker magnetic fields than previously thought.

A 40-mile-wide black hole 8,000 light years from Earth named V404 Cygni yielded the first precise measurements of the magnetic field that surrounds the deepest wells of gravity in the universe. Study authors found the magnetic energy around the black hole is about 400 times lower than previous crude estimates.

The measurements bring scientists closer to understanding how black holes' magnetism works, deepening our knowledge of how matter behaves under the most extreme conditions -- knowledge that could broaden the limits of nuclear fusion power and GPS systems.

(Excerpt) Read more at sciencedaily.com ...


TOPICS: Astronomy; Science
KEYWORDS: black; holes; junkscience; magnetism; science; scientist; stringtheory; wimpy
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1 posted on 12/07/2017 2:52:50 PM PST by LibWhacker
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To: LibWhacker

When you’ve got gravitational pull like nobody’s business, who needs magnetism?.................


2 posted on 12/07/2017 2:53:50 PM PST by Red Badger (Road Rage lasts 5 minutes. Road Rash lasts 5 months!.....................)
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To: LibWhacker

How can a magnetic field escape a black hole if light cannot?


3 posted on 12/07/2017 2:56:30 PM PST by Steely Tom ([Seth Rich] == [the Democrat's John Dean])
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To: Red Badger

Thought you were talking’ bout’ women.


4 posted on 12/07/2017 2:56:51 PM PST by DIRTYSECRET (urope. Why do they put up with this.)
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To: Red Badger

If you have a black hole that is strong enough so that light cannot escape, can magnetism escape ?


5 posted on 12/07/2017 2:56:53 PM PST by UCANSEE2 (Lost my tagline on Flight MH370. Sorry for the inconvenience.)
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To: Steely Tom

May the force be with you...


6 posted on 12/07/2017 2:58:11 PM PST by resistance (abandon all hope and rational thought, become a democrat)
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To: Steely Tom

A black hole can have mass, spin and charge, that’s it. All are measureable from the “point of no return”.

A moving charge creates a current which creates a magnetic field. I suppose that is the magnetic field they measured but I don’t have access to the paper.


7 posted on 12/07/2017 3:08:00 PM PST by billslugg
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To: Steely Tom

Gravity escapes. But I’ve been wondering about that, too. Magnetic field lines: Can they escape? If not, then what’s the big problem here; if magnetic field lines can’t escape, then we shouldn’t be surprised that the magnetic field of a black hole is wimpy, right? But then, I’m not a physicist, as should be obvious to any such person reading about my total state of confusion!


8 posted on 12/07/2017 3:08:28 PM PST by LibWhacker
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To: LibWhacker

https://www.youtube.com/watch?v=qzUJJKDa558


9 posted on 12/07/2017 3:13:52 PM PST by wally_bert (I didn't get where I am today by selling ice cream tasting of bookends, pumice stone & West Germany)
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To: LibWhacker
Study authors found the magnetic energy around the black hole is about 400 times lower than previous crude estimates.

Well, that's unsettling science.

10 posted on 12/07/2017 3:26:01 PM PST by pfflier
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To: LibWhacker

According to General Relativity gravity is a curvature of spacetime so it has nothing to escape. It’s simply there.


11 posted on 12/07/2017 3:29:53 PM PST by Moonman62 (Make America Great Again!)
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To: LibWhacker

You may be thinking about particle creation at the black hole horizon when an anti-particle is launched outside the hole. The significance has to do with whether or not information can escape a black hole.


12 posted on 12/07/2017 3:33:46 PM PST by sparklite2 (I hereby designate the ongoing kerfuffle Diddle-Gate.)
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To: LibWhacker

“Gravity escapes.”

You’re saying gravity escapes gravity. Are you sure you want to go on record with that? And gravity doesn’t affect magnetic fields. But magnetism affects measurements of gravity (a little).


13 posted on 12/07/2017 3:36:19 PM PST by steve86 (Prophecies of Maelmhaedhoc O'Morgair (Latin form: Malachy))
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To: LibWhacker

Well, I guess that with “tears in the fabric of the universe” and all, perhaps the magnetism is leaking out. SciFi baloney
. Why don’t these”scientist just say they don’t know?


14 posted on 12/07/2017 3:56:59 PM PST by Manly Warrior (US ARMY (Ret), "No Free Lunches for the Dogs of War")
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To: LibWhacker


Black Holes are wimpy? Here at FR, we've known that for years.


15 posted on 12/07/2017 4:04:40 PM PST by canuck_conservative
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To: LibWhacker

I would expect reduced magnetism. Given the immense density combined with incredible gravity, I would expect little movement inside the mass of the black hole.


16 posted on 12/07/2017 4:29:03 PM PST by aimhigh (1 John 3:23)
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To: Moonman62

I didn’t stay in physics long enough to understand fields, that’s for sure. But in my undergrad mind I had to deal with them in some way and finally just decided they were nothing more than a set of measurements made, or inferred to exist, at every point in space around some object that gave you the strength and direction of some force, a vector field, in other words. But there was no mass there or ever necessarily passing through that point. It was just some kind of influence on the fabric of space that emanated from an object and gave you a vector field at each point. And then the thought immediately pops up: like gravity, you mean? But, I understand: I’m definitely confused and things just aren’t very clear to me. My problem, not yours. Thanks!


17 posted on 12/07/2017 4:39:23 PM PST by LibWhacker
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To: Moonman62

“According to General Relativity gravity is a curvature of spacetime so it has nothing to escape. It’s simply there.”

Well said...

(.... if I understand the whole concept correctly.)

It’s equivalent to saying “Objects and locations on the equator can’t escape being on the equator, and return to the way they should be at the the poles of the Earth.”

Things on the equator, like phenomena in a black hole (including gravity), can’t, don’t, won’t and shouldn’t “escape” from being where and what they are.


18 posted on 12/07/2017 6:50:51 PM PST by Chad N. Freud (FR is the modern equivalent of the Committees of Correspondence. Let other analogies arise.)
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To: LibWhacker

I love FreeRepublic!

I learn so much.

(For another example, just look up the Oroville Dam “Emergency” thread.)


19 posted on 12/07/2017 6:55:36 PM PST by Chad N. Freud (FR is the modern equivalent of the Committees of Correspondence. Let other analogies arise.)
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To: Chad N. Freud; LibWhacker

John Wheeler: “Mass tells space-time how to curve, and space-time tells mass how to move.”


20 posted on 12/07/2017 7:41:26 PM PST by Moonman62 (Make America Great Again!)
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