Ancient Galactic Magnetic Fields Stronger than Expected

Jul 23, 2008

(PhysOrg.com) -- Mining the far reaches of the universe for clues about its past, a team of scientists including Philipp Kronberg of Los Alamos National Laboratory has proposed that magnetic fields of ancient galaxies like ours were just as strong as those existing today, prompting a rethinking of how our galaxy and others may have formed.

With powerful telescopes and sophisticated measurements, the team probed back in time to see the ancient universe as it existed some 8 to 9 billion years ago. Their research was published in the July 17 edition of Nature.

Until now, a prevailing view in the astrophysical community has been that galactic magnetic fields gradually increased over cosmic time up to their present strengths and that in the nascent universe, magnetic fields were initially very weak. Astrophysicists explain this gradual growth of magnetism over time with the large-scale "galactic dynamo" model.

The letter in the current issue of Nature extends a parallel, larger study by Kronberg et al. of early magnetic fields from the March 2008 edition of The Astrophysical Journal. That study, whose contributors also included LANL colleagues David Higdon and Margaret Short, relied mostly on Faraday rotation measures (RM) taken at radio wavelengths, beyond what is visible to the human eye.

By measuring how far the radio waves were pulled toward the red end of the spectrum-known as "redshift"-Kronberg and his colleagues homed in on the location of magnetic fields in the distant universe.

What allowed the team to take a more detailed look at the ancient universe in this Nature letter was the addition of high-resolution optical spectra by Martin Bernet, Francesco Miniati, and Simon Lilly at the ETH Zürich (the Swiss Federal Institute of Technology) from the European Southern Observatory's 8-meter telescope, located in Chile's Atacama Desert.

Their measurements at optical wavelengths of more than 70 quasars were combined with the RM data Kronberg has been collecting for more than 25 years - data based on accurate radio RM measurements from several of the world's most powerful radio telescopes, including the Very Large Array near Soccoro, New Mexico, and the 100-meter dish in Effelsberg, Germany.

"It was thought that, looking back in the past, earlier galaxies would not have generated much magnetic field," Kronberg said. "The results of this study show that the magnetic fields within Milky Way-like galaxies have been every bit as strong over the last two-thirds of the Universe's age as they are now-and possibly even stronger then."

Serving as a looking glass into the past, the powerful telescope at the European Southern Observatory, adding to the radio RM data, allowed the scientists to make observations of high magnetic fields between 8 billion and 9 billion years ago for 70 intervening galaxies whose faint optical absorption spectra revealed them as "normal" galaxies. That means that several billion years before the existence of our own sun, and within only a few billion years of the Big Bang, ancient galaxies were exerting the tug of these strong magnetic fields.

This research suggests that the magnetic fields in galaxies did not arise due to a slow, large-scale dynamo effect, which would have taken 5 billion to 10 billion years to reach their current measured levels. "There must be some other explanation for a much quicker and earlier amplification of galactic magnetic fields," Kronberg said. "From the time when the first stars and galaxies formed, their magnetic fields have probably have been amplified by very fast dynamos. One good possibility is that it happened in the explosive outflows that were driven by supernovae, and possibly even black holes in the very earliest generations of galaxies."

This realization brings a new focus on the broader question of how galaxies form. Instead of the commonly held view that magnetic fields have little relevance to the genesis of new galaxies, it now appears that they are indeed important players. If so, strong magnetic fields a long time ago are one of the essential ingredients that explain the very existence of our galaxy and others like it.

Provided by Los Alamos National Laboratory

Explore further: Image: Galactic wheel of life shines in infrared

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x646d63
3 / 5 (2) Jul 23, 2008
Can I be first? Electric universe! Electric Universe!
earls
1 / 5 (1) Jul 23, 2008
Just the tip of the iceberg as far as the consequences of an electrically driven Universe go.

Gravity appears to simply be the "icing on the cake." A remainder. An effect of a cause instead of the cause of effects.

The Electric Universe theory is in general compliance with Quantum Mechanics - it potentially serves as the basis - electromagnetism. Many suggest QM is bizarre, backwards, "spooky"... Oddly enough it seems to me that physics become increasingly convoluted the farther we get from Earth.
thales
1 / 5 (1) Jul 23, 2008
No no no, it's Aether Wave Theory baby! By AWT!!
jeffsaunders
2 / 5 (1) Jul 23, 2008
No surprise here. Magnetic fields getting stronger over time? what rubbish. Instead of calling it a prevailing idea that has been debunked it should have been called an optional idea that has been debunked.

Good to see basic scientific research though.

Have we rechecked to make sure water really does flow downhill lately?
Quantum_Conundrum
2.3 / 5 (3) Jul 23, 2008
A thought:

Perhaps the measurements of how fast Galaxies are rotating are incorrect.

Of course, galaxies aren't mere weather phenomenon, but the idea of a cyclone or other vortex is still quite tempting. Generally speaking, the rate of rotation of a vortex is greater than the rate of its linear movement through the background media. While a gravitational vortex of a SMB may not obey exactly the same laws as a weather phenomenon or a whirlpool in a body of water, the basic concept should still be the same. The Galaxies mass and energies should be more important than the background media.

But in cosmology, we do not observe this, at least according to official measurements. In cosmology, we are expected to believe that Galaxies are moving at significant portion of the speed of light relative to one another, but that they rotate relatively slowly. This does not seem to make sense compared to other similar phenomenon.


If the rate of galactic rotation were severerely underestimated, then there could be room for a "dynamo effect" to be explained by this discreency.


Of course this is purely conjecture, but then again, so is so much of theoretical physics.
EarthScientist
1 / 5 (7) Jul 24, 2008
Ahhh, I see the 'Bergs are at it again,depleting someones money for their research, I just laugh at you boys who fail,You get an E - at our tasking school. The grid scientists,that you did not even know existed until I started my beatings explain the universe to their students,of which group you boys definitely do not belong in our group.Oh,yes the Universe is aetheric,aka,electrical and I have given out the main clue as to the glue and the process just to make you boys have quivvering lips ,and sure enough ,I have proven to others at our office,that you boys were so set hard by your favorite model man ,who obviously sniffed too much Testors whilst modeling,that you would fail,miserably at understanding or assimilating the cymatics discussions I have shared or the salts growth processes I have shared.

That statement about the ammonia crystal grown into our core to draw the aether to it at its lower tone and explanation of gravity was just too simple for you boys to exist in the same room with,no different than the statements I make about your idiotic photosynthesis model because grid science has been with held from you .

Your whole body works on tones and your whole basic processes and intellect and incarnational programming exists in something called youre "Dot" and it IS the size of a grain of sand,and IS a salt also,and having crystalline structure,that IS grown,just like this earth,ON PURPOSE,I find commentary of the "Berg folks to not be as stimulating for my processes.

Boys,Boys ,Boys
dynamoJ
5 / 5 (2) Jul 24, 2008
Wow EarthScientist, you must be proud of yourself.

child, child, child
thales
not rated yet Jul 24, 2008
you boys were so set hard by your favorite model man


I count 8 uses of "boys". I'm just sayin'...
EarthScientist
1 / 5 (4) Jul 24, 2008
You are spun up DynamoJ person by your Handlers,ya might try entity depletion techniques to help yourslf heal.

This old man sees you boys as boys,stunted for life,so I will continue to make you and your ordering masters squirm,as I see.

Why were you boys sent to troll at a science site? Betcha havve a hard time answering that ,but your protocoler doesnt ,now does he??
thales
5 / 5 (2) Jul 24, 2008
Thanks a lot Earth. Now you've ticked off not only my handler, but my ordering master AND my protocoler. Crap I'm going to get it tonight.
earls
not rated yet Jul 25, 2008
I get it now. He's a rapper.

btw thales lol AWT
EarthScientist
1 / 5 (3) Jul 25, 2008
Ah I see ow that you can still have some HUm-ah and do be careful,as your ordering master may give you a Too-mah.

We do believe in Joviality also,but reality is still where I place my pen,why dont you just check Big Ben, you will find the Naval Observatory adjusting the time,as I do really know how to rhyme,and when the motor of the planet is cut out,this planet will drop dead and only some of us will shout. Now heres a factoid from a guy with a clearence.The earth will be the 18 th. planet to have its motor cut out ,it will be a bit of time though,but dont count on too many grandchildren here. When the moon phases were off a bit ago,and the Chandler wobble was erratic,they had to replace a key motor adjustment component they cut out to fix the detectable anomaly they created.

Get ready for one h--- of alot more trouble from this bunch before the planet is ihhabitable,but I expect not many of you have any ability beyond your dart game and your blackberry. Prove me wrong,but I shall not hold my breath.
rubberman
5 / 5 (1) Jul 26, 2008
Earthscientist....wow. LOL.
yyz
5 / 5 (1) Jul 26, 2008
EarthScientist....wow. I'm just wondering if he's a FlatEarthScientist or a HollowEarthScientist.
GrayMouser
not rated yet Jul 26, 2008
I don't what effect the theory of aether would have on this (please note the the theory was never disproved) but, if the numbers don't mesh, you don't understand the significant variables as well as you think. Either the universe has a different age, the observations have a flaw, or the theory needs fixing.
thales
not rated yet Jul 26, 2008
EarthScientist....wow. I'm just wondering if he's a FlatEarthScientist or a HollowEarthScientist.

My money's on Hollow.
EarthScientist
1 / 5 (2) Jul 27, 2008
This Poor Thales person is a paid Psy.Org troll,everyone beware. Papa here gives you you young boys processand you fail the course. ..I assure you.

I give out no improper information and thats the funny thing dealing with intellect depleted boys.

What....No actual smart boys here,just drones plying out the accepted garbage??

You boys should just stick to golf.
corymp
not rated yet Jul 27, 2008
Man EarthScientist, what are you doing talking to little boys....
x646d63
5 / 5 (2) Jul 30, 2008
This little boy can't be dissed by the man called EarthScientist. I know his game; I know his agenda. He's a crazy MoFo from south central pretenda. He got no game, no education, but wants to play with the boys when he's on vacation. But McD's don't pay that well, and don't offer paid holiday, so he's gotta stay up late and write some rhymes that sound pretty gay. Too bad the man is crazy beyond all recognition, otherwise his stories might be interesting fiction.

Out in 36, In in 35.
thales
not rated yet Jul 30, 2008
Just... awesome.
EarthScientist
1 / 5 (2) Aug 02, 2008
Oh my,and how could you support your con -clusions. This old man likes to play with you boys cuz he knows sumpth-in you ah dont and you ah dont have a g-o dam uh clue as to even the glue of the universe. Why you dont even have a clue as to why there is a genetic pre-disposition for certain gay births. You is a fooh, you gets a ya due iffen ya mess with ah me. Cuz I make uh yah pee funny,I get uh the boys to pin you for less ah noise,cuz I is ah protcoled and I uh is contingent mastah and music is ah the key and you little boys will never see,just what Papa does to you,as you dont have a clue,and hyperdimension has YOUR glue. Maybe a litte penis will get ah your attention,why there are 30 million cases of ED from HD,andI spect you boys is uh soon to be included,as contingent mastah has his way.

Now theres a riddle to make you have less piddle.
x646d63
not rated yet Aug 03, 2008
I would actually enjoy, and probably learn something from, your (EarthScientist's) understanding of the universe. Unfortunately, I'm having trouble understanding the majority of any of your posts, so please forgive my ignorance.

I would encourage you to write your understandings using commonly accepted grammar and punctuation, and words I can look up in the dictionary or google if I don't understand.

I tried to google "entity depletion" and don't know what a protocooler is, and can't make much of your "riddle." So rather than being cunning, and "more knowing than thou" please dumb your posts down so we can understand. Maybe your understanding of the universe is more accurate than mine, but I can't really tell since I don't understand a word you say.

Thanks.
vidyunmaya
1 / 5 (3) Oct 11, 2008
Sub: SOURCE-FIELDS-REFLECTORS- FLOWS
My books on PLASMA VISION OF THE UNIVERSE [1993]
and PLASMA REGULATED ELECTRO_MAGNETIC UNIVERSE [1996] Provides more Figures,Inputs and feasible models based from COSMOLOGY VEDAS as Interlinks.These will definitely help Science to advance. This is the I proposed EAST WEST INTERACTION- Books Copy rights are taken in USA so that Scientists can freely Interact.
Additionally, I presented the concepts in Cosmology Review [dot] Com in 2000 and presented papers at Carnegie Centennial Symposium-2, Jan 2003 and Universe-Cosmic Pot Energy - in STSCi Symposium ,May 2003.
Further inputs -See Cosmos Yoga Vision series I-IV and V-VI now getting ready. Lots of Space data fits-in.
COSMOLOGY VEDAS-Interlinks-FREE DOWNLOAD : http://www.buymye...kId=1422
Vidyardhi Nanduri