as rolf says ... can you guess what it is yet?

[MattEU]

Giant glowing bubbles found around Milky Way

IS THE Milky Way blowing giant bubbles? A pair of gamma ray bubbles, shaped like an hourglass, seem to be spewing from the black hole we think lies at the centre of our galaxy. That is according to the latest maps from the Fermi Gamma-ray Space Telescope. Its large area telescope has been scanning the whole sky every three hours since June 2008.

The source of the bubbles is a mystery but it seems unlikely that dark matter is responsible. This was what Douglas Finkbeiner of the Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts, first suspected when he looked at the maps with his colleagues last year (arxiv.org/abs/0910.4583).

But a new analysis with more Fermi data suggests that the gamma radiation traces out a pair of distinct bubbles that span some 65,000 light years from end to end - towering above the 2000-light-year-thick disc of the galaxy (see image).

Such a well-defined shape is inconsistent with dark matter, which you would expect to be smoothly distributed and produce a diffuse glow, from gamma rays produced after dark matter particles meet and annihilate each other. "We are pretty sure the majority of emissions are not from dark matter," says Finkbeiner's student Meng Su.

Instead, they think the bubbles may have been blown out by the explosion of short-lived, massive stars born in a burst of new star formation about 10 million years ago. Alternatively, the bubbles may have been forged about 100,000 years ago by high-speed jets of matter created when roughly 100 suns' worth of material fell into the black hole at the centre of our galaxy. The team presented its analysis last week at the American Astronomical Society meeting in Miami, Florida (arxiv.org/abs/1005.5480).
The bubbles may have formed when 100 suns' worth of stuff fell into our galaxy's giant black hole

Fermi team members have also found more gamma radiation than expected in the region but say it's too soon to tell whether it forms an hourglass shape or what its source may be.

http://www.newscientist.com/article/mg2 ... y-way.html

[solrey]

can you guess what it is yet?

Based on the following diagram from the paper located here.



I'm guessing a pretty close approximation of Alfven's galactic homopolar motor circuit diagram?





cheers2

[jjohnson]

Under this "cartoon" (an iconic sketch often used in physics or astronomy to depict an event or series of phenomena in a simply way - like a sketch of something) is the following paragraph:
N-body/gas dynamical galaxy formation simulations have shown that for Milky Way like galaxies, about 70% extra baryonic mass should reside around the galaxy in form of hot gas (Sommer-Larsen 2006). Warm clouds are confined by the pressure of the ambient hot halo gas, which contains mass at least two orders of magnitude more than these warm clouds. The study of the Fermi bubbles may provide hints of hot gas feedback from the Galaxy, the search for the missing baryons (Bregman 2007) and the puzzle of high-velocity clouds.
If you will but change the references to "gas", "hot gas", "warm clouds", "halo gas" and "high-velocity clouds" to "plasma", and you have a reference to our picture!

Here's a little sketch I worked up a while back in Google Sketchup. It was a closed surface depiction, empty inside the upper and lower surfaces, so it looked like two balloons back to back. To peer inside I sliced a section and also turned on the "X ray view" icon so that you could see through the bounding surface along which the galactic current is alleged to propagate. I don't know if it is a more or less contiguous "sheet" or if it maintains a filamentary structure. The latter seems more likely, given the normal tendencies of plasma to pinch if possible, but who knows, at that distance from the Galaxy, the forces that disturb the plasma may be very low and might be a smooth sheet conductor. That's speculative, though. The jets likely are collimated up and down through the funnel-like polar "tubes", to spread out over the "surface" and return along the galactic ecliptic via the arms. The galaxy is at the center, and would be too small, by far (100,000 LY across), to depict in any detail at this scale.

When I see pictures of galactic jets, such as M31, or NRAO's 3C31 or NGC 2336, I see our galaxy morphology, repeated throughout our observable plasma universe.

[MattEU]

thanks for replies

if everything is scalable in an electric universe do those diagrams apply to earth and planets? or variations of those diagrams? or are they very different?

[junglelord]

I will say again that the diagrams to me are a four wave mixer non-linear phase conjugation structure.
I think they are applicable from spiral galaxy to star to planet. I believe that the basic longitudinal dielectric component of the EU is based on this circuit.