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New All-Sky Map Shows the Magnetic Fields of the Milky Way

samzenpus posted more than 2 years ago | from the discerning-eye dept.

Space 41

An anonymous reader writes "With a unique new all-sky map, scientists at MPA have made significant progress toward measuring the magnetic field structure of the Milky Way in unprecedented detail. Specifically, the map is of a quantity known as Faraday depth, which among other things, depends strongly on the magnetic fields along a particular line of sight. To produce the map, data were combined from more than 41,000 individual measurements using a novel image reconstruction technique. The work was a collaboration between scientists at the Max Planck Institute for Astrophysics (MPA), who are specialists in the new discipline of information field theory, and a large international team of radio astronomers. The new map not only reveals the structure of the galactic magnetic field on large scales, but also small-scale features that provide information about turbulence in the galactic gas."

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41 comments

Happy Holidays from the Golden Girls! (-1)

Anonymous Coward | more than 2 years ago | (#38293696)

Thank you for being a friend
Traveled down the road and back again
Your heart is true, you're a pal and a cosmonaut.

And if you threw a party
Invited everyone you ever knew
You would see the biggest gift would be from me
And the card attached would say, thank you for being a friend.

Slashdotted already?!? (1)

bratloaf (1287954) | more than 2 years ago | (#38293746)

Looks like the slashdot effect is in full force already...

Re:Slashdotted already?!? (4, Funny)

Stargoat (658863) | more than 2 years ago | (#38293804)

The magnetic field structure of the galaxy pales in comparison to the power of the Slashdot Effect.

Re:Slashdotted already?!? (1)

forkfail (228161) | more than 2 years ago | (#38294092)

It's actually Homegalaxy Security, making sure you don't know where they store all the magnets....

Re:Slashdotted already?!? (2)

GameboyRMH (1153867) | more than 2 years ago | (#38294158)

They probably have the ICP on a watchlist.

Oblig. (3, Funny)

fuzzyfuzzyfungus (1223518) | more than 2 years ago | (#38293824)

Fucking Magnetic Field Structures of the Galaxy; how do they work?

Re:Oblig. (0)

Anonymous Coward | more than 2 years ago | (#38293864)

moving electric charges cause magnetic fields.

Molecules with unpaired electrons in their orbitals tend to demonstrate this quite well. (IIRC paired electrons will cancel each others magnetic fields out).

Re:Oblig. (0)

Anonymous Coward | more than 2 years ago | (#38293916)

whoosh...

Re:Oblig. (1)

rubycodez (864176) | more than 2 years ago | (#38293936)

Fucking Moving Charges of the Galaxy, How Do They Work?

The origin and causes of galactic magnetic fields (or, the moving charges that cause them) is unknown and there are competing theories. One is that it is a residual property frozen in matter originating in the big bang.

Re:Oblig. (0)

GameboyRMH (1153867) | more than 2 years ago | (#38294172)

I don't wanna talk to an astrologist, y'all motherfuckers lying, and getting me pissed!

Re:Oblig. (1)

GameboyRMH (1153867) | more than 2 years ago | (#38294192)

Aw crap made the infamous L vs. N mistake...that's what happens when you're laughing too hard.

Re:Oblig. (1)

Hillgiant (916436) | more than 2 years ago | (#38295024)

What's a astronogist?

Re:Oblig. (0)

Anonymous Coward | more than 2 years ago | (#38294258)

So... The astrologer that told me I would get laid, was lying...?

Re:Oblig. (1)

GameboyRMH (1153867) | more than 2 years ago | (#38294344)

Yeah yeah, I made a mistake. Rap battle instincts took over and chose the word that rhymed better.

Re:Oblig. (1)

iggymanz (596061) | more than 2 years ago | (#38296290)

you didn't listen closely enough. he said you'd get screwed. the U.S. government has been doing that to you for decades.

Re:Oblig. (1)

matrim99 (123693) | more than 2 years ago | (#38294202)

Rainbows, too.
Miracles [knowyourmeme.com]

Re:Oblig. (4, Funny)

forkfail (228161) | more than 2 years ago | (#38294422)

As the Turtle's shell rubs the fur on the elephants' backs, it builds up an electric charge, which results in a magnetic field.

Re:Oblig. (1)

RivenAleem (1590553) | more than 2 years ago | (#38302320)

Why are the elephants on their backs?

Re:Oblig. (1)

iggymanz (596061) | more than 2 years ago | (#38294586)

The origin of the magnetic field of the Milky Way has been discovered. It is amazingly a very recent phenomenon that has arisen in the last fifteen years, due to geeks taking apart broken hard drives and separating their very powerful rare earth magnet pairs.

Google cache link (2, Informative)

Anonymous Coward | more than 2 years ago | (#38293882)

Google Cache Link [googleusercontent.com]

Shouldn't /. automatically append a cache link to every submitted link?

Re:Google cache link (1)

Baloroth (2370816) | more than 2 years ago | (#38294044)

Now where would be the fun in that?

Re:Google cache link (1)

skids (119237) | more than 2 years ago | (#38294476)

Agreed. A wayback machine link would, however, be fun.

Re:Google cache link (1)

Pope (17780) | more than 2 years ago | (#38294610)

No, that'd just break the Wayback Machine.

Anus Sniffers Anonymous (-1)

Anonymous Coward | more than 2 years ago | (#38294006)

have you ever followed wild rats and mice around on all fours just to sniff their anus?

ep!9? (-1)

Anonymous Coward | more than 2 years ago | (#38294008)

D@mn, no wonder it stinks... (0)

Anonymous Coward | more than 2 years ago | (#38294050)

Do we really need to know about the turbulence in the galactic gas?

Re:D@mn, no wonder it stinks... (2)

cyberchondriac (456626) | more than 2 years ago | (#38294118)

My thoughts exactly. Maybe it's caused by the Great A'Tuin and those 4 elephants.

<Electric Universe Rant Placeholder> (1)

Anonymous Coward | more than 2 years ago | (#38294168)

<Tangential tie-in due to reference to cosmic magnetic fields. Breathless, incoherent pseudoscience with suggestion of a conspiracy in mainstream physics to suppress this enlightened perspective. Also, TimeCube.>

Magnetic field structure of the Milky Way? (-1)

Anonymous Coward | more than 2 years ago | (#38294200)

This is why I eat Butterfinger.

If it's good enough for Bart Simpson, it's good enough for you.

Yikes... (0, Offtopic)

Anonymous Coward | more than 2 years ago | (#38294444)

Instead of problems at work, relationship woes, or my own identity and how it relates to life, I was laying awake all night last night wondering about this kind of stuff...

already? (0)

Anonymous Coward | more than 2 years ago | (#38294492)

who are specialists in the new discipline

What would be nice... (4, Interesting)

jd (1658) | more than 2 years ago | (#38294578)

...would be a magnetic map superimposed on an inverse map of known stellar objects where "brightness" is the estimated mass calibrated such that stars that behave as we'd expect them to will show up as black (or near to it). (ie: calculate what you'd hypothesize the magnetic fields "should" be if all models are correct, then look at the difference between what you see and what you expect to see.)

In other words, what doesn't match up? Maps are wonderful things, but in science you really don't care too much about the knowns. The unknowns are much more fun. Knowing where there are magnetic fields where there's no identifiable source, where the magnetic field for stars are unexpectedly strong or unexpectedly weak - that's where it gets really interesting. You can do a lot where data doesn't match the hypothesis. There's a lot less you can do when they do match and there's absolutely nothing you can do if you don't make any predictions at all.

Re:What would be nice... (0)

Anonymous Coward | more than 2 years ago | (#38300198)

An international team of radio astronomers have mapped the magnetic field of the galaxy? Now that the earth's magnetic field is physically shredded and virtually unrepairable, http://www.youtube.com/watch?v=Z_aUJOpBvFM [youtube.com] what happens in this galaxy apart from what is going to happen to the earth during the next solar fury unleashed from our smiling sun is really rather inconsequential in my book. Its the same people who now want to flip-flop our earth's magnetosphere and shoot a hole into the space time continuum.. all because they could not get laid in junior high school.

Migration (2)

sci-ku (2526824) | more than 2 years ago | (#38294646)

This will dramatically improve the results for my interstellar Monarch butterfly tracking project that I recently launched.

1) Collect a bunch of butterflies
2) Make them little space suits
3) Improve lifespan by several orders of magnitude
4) Map galaxy's magnetic fields [CHECK]
5) ???

Re:Migration (3, Funny)

TapeCutter (624760) | more than 2 years ago | (#38296060)

I tried that but the little buggers flew to Mexico for the winter.

I wonder... (1)

vikingpower (768921) | more than 2 years ago | (#38294770)

... how Information Field Theory, or IFT, could be applied to computer science ? Or to the totally clueless management above my current project ?

This looks like a map I was searching yesterday (0)

Anonymous Coward | more than 2 years ago | (#38296048)

All google gave me was something like this:
http://www.holoscience.com/news.php?article=2m1r5m3b

Really? (0)

Anonymous Coward | more than 2 years ago | (#38296398)

"...that provide information about turbulence in the galactic gas..."

Really? It's bad enough when I fart, now we are spending millions to study space flatus?

So big of a galaxy... (2)

c0lo (1497653) | more than 2 years ago | (#38298590)

... and no magnetic monopoles yet?
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