Re: Physicists find clue to formation of magnetic fields around stars and galaxies

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Subject	Re: Physicists find clue to formation of magnetic fields around stars and galaxies
Date	Tue, 10 Nov 2015 18:26:06 -0000
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Sam Wormley <swormley1@gmail.com> wrote:
> Physicists find clue to formation of magnetic fields around stars and 
> galaxies
>> http://phys.org/news/2015-11-physicists-clue-formation-magnetic-fields.html
> 
> 
>> An enduring astronomical mystery is how stars and galaxies acquire
>> their magnetic fields. Physicists Jonathan Squire and Amitava
>> Bhattacharjee at the U.S. Department of Energy's (DOE) Princeton
>> Plasma Physics Laboratory (PPPL) have found a clue to the answer in
>> the collective behavior of small magnetic disturbances. In a paper
>> published in October in Physical Review Letters, the scientists
>> report that small magnetic perturbations can combine to form
>> large-scale magnetic fields just like those found throughout the
>> universe. This research was funded by the DOE Office of Science.
> 
>> In the paper, Squire and Bhattacharjee show that under certain
>> conditions small magnetic fields?instead of small velocity fields,
>> which have been studied more often?can combine to form one large
>> field. After running computer simulations on a PPPL computer named
>> "Dawson," the scientists found that small disturbances can combine to
>> form one large disturbance when there is a lot of velocity shear?when
>> two areas of a fluid are moving at different speeds. "We used a
>> variety of computational and analytic methods to approach the problem
>> from a few different angles," said Squire.
 
Implying they were clueless before.
 

-- 
Jim Pennino

Thread

Physicists find clue to formation of magnetic fields around stars and galaxies Sam Wormley <swormley1@gmail.com> - 2015-11-10 09:46 -0600
  Re: Physicists find clue to formation of magnetic fields around stars and galaxies jimp@specsol.spam.sux.com - 2015-11-10 18:26 +0000
  Re: Physicists find clue to formation of magnetic fields around stars and galaxies "reber g=emc^2" <herbertglazier0@gmail.com> - 2015-11-10 13:14 -0800

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