The entropy of systems

Been thinking about these bubbles. Now i'm saying that a galaxy is a real bubble i.e. it has equilibrium, if it doesn't it's not a bubble. I've also said that this boundary layer to the galaxy could have a near zero inertia.

Let's take four galaxy bubbles and stack them in a pyramidal form. I would argue that the bubbles behave just like soap and gelatine bubbles. They will create a central node and equalize their slightly different energy densities almost instantaneously. This they can do, because they have a low inertia to allow fast deformations, and they have a faster than light graviton to "instruct" the the bubbles on achieving equilibrium.

So, there would be a nodal point but it couldn't be easily detected. For galaxies which are just fuzzy balls of low density gas, there should be a pyramidal zone of differing energy density.

I found a temperature map of the andromeda galaxy (this is the closest galaxy to our own galaxy):

www.sciencedaily.com/releases/2006/07/060716224756.htm

What is your conclusion?...:

Do you see 50K gas clouds in the <b>galaxy cluster </b>temperature maps?
Also notice the black background which is at approximately 4K in the <b>andromeda</b> temperature map.

I don't know, what do you make of it? I read the article but couldn't find where it says 4k, though I did get a script error message. 4k at what frequency? i always try to avoid making conclusions, down to lazyness and gross stupidity I'm afraid. That's why I always have to drink ten pints of beer, I can't conclude whether i like it or not 8D]

I ssuppose an obvious question to ask is, what is the speed of light in the intergalactic medium? We measure it in a vacuum but that's in a lab which is in the space of the Earth. I would argue, contrary to Einstein, that the speed of light is not a constant.

A cloud of atomic hydrogen cools and the atoms pair off. The gas will, at some point, be half and half. The velocities will differ, this is a viscoelastic and it will be sort of spongey. Something very responsive to shear forces. I think that's interesting [][8D]

The idea that Andromeda was more efficient at star formation in the past is something to take note of and stow away in the lumber room for dredging up later as well.

Stoat,
The temperature map in this image reflects millimeter wave length, therefore does not show relativistic electrons... sorry, I jumped the gun.
The approx. 4K background should be outside the galaxy.(which I assume is the temperature between galaxies in this neighbourhood of space).

I will keep searching for a temperature map at radio wave length for the andromeda galaxy.

While searching for this, I fell upon a video reconstruction of the merger between two clusters of galaxies (the galaxies look like a swarm of bees):
www.esa.int/esaCP/SEMSKV9DFZD_FeatureWeek_0.html
They call this the most violent event since the Big Bang.

I think this speaks for itself.

I found a link which shows M31 (Andromeda) at 1.5 keV...
(Looks very different from the clusters):
wave.xray.mpe.mpg.de/rosat/publications/highlights/m31

The clusters seem to be at a much higher entropy than galaxies in this neighbourhood of space.

I did not find a temperature map of M31's halo (if there is any)

I think you should slow down GD You have a whole new bunch of questions and very little raw data to reach any great conclusion about entropy of galaxy clusters.

The wow factor here [8D][] A ball of galaxies, millions of light years across. A "bullet" of galaxies ploughs into it and actually stops! A galaxy cluster is a pretty diffuse thing, so the "bullet" has to have a relatively low velocity, and it takes about a billion years for this balistic event to happen. The bullet is still going at a hefty pelt, over a hundreth of c [8D] I thiink there's something badly wrong with this somewhere []