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Originally Posted by sjastro
So the Planck data shows a giant plasma ball in microwave.
Sinces plasma emits electromagnetic radiation over a wide spectrum, and very strongly in X-ray due to Bremsstrahlung, explain the absence of filamentary structure in the X-ray image?
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Excellent questions Steven... plasmas emit radiation depending on their mode state...
http://www.youtube.com/watch?v=Q4jZ9...eature=related
See 1 Min 47 For an explanation of mode states (Dark, Glow, Arc) mode...
Glow and particularly Arc are fairly easy to see via em discharge, but we can also measure 'dark' mode, not from the radiation of the plasma, but from the Faraday rotation of polarised light traveling through the plasma field.
Bryan Gaensler, of Sydney Uni, has done alot of work on this mapping of "magnetic fields" using radio telescope techniques. He calls his theory "The Magnetic Universe" but is of course aware of the electric currents producing these fields as he's said, that's just simple Maxwells, the M-fields are setup by the currents.
We need to think of the Galaxy as not a uniform "Hot Gas Plasma", but as a dynamic circuit. Electro dynamics and circuit theory are very important here...
Now... onto the question...
Regarding Xrays not forming filaments, we both know Xray emissions are very high energy emissions. Plasmas (given their name in part due to their cellular forming nature) form
Double Layers. It is in these double layers that electrons (and charged particles) are accellerated to very high speeds, it is at this high-energy state that the "brake" (Bremsstrahlung) radiation can emit to the level Xrays... Synchrotron Radiation is also very important, as these particles are moving through m-fields.
For example have a look here...
http://en.wikipedia.org/wiki/File:Ma...mnant_full.jpg
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The remnant of "Tycho's Supernova", a huge ball of expanding plasma. The outer shell shown in blue is X-ray emission by high-speed electrons.
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See how the "high speed" is caused in the "double layer" area of the plasma cell...
It is in these double layers that the real action (high acceleration) happens... so it would depend on how much energy is available to the system as to where you'd see xrays, i'm sure you'd find some areas of the circuit that could achieve plasma filaments with xray discharge... certainly Chandra has mapped plenty of em
great fun... these amazing new telescopes are changing everything we know about how galaxies work... it will change the way we view the universe forever.
http://www.youtube.com/user/Thunderb.../0/I-46CJ5Pt7U
(see the 6:00 mark... what a change since the 1980s!)
The universe is alive and dynamic.
All the best
