The hypothesis (as I understand it) for why there are globular clusters of stars in the halo areas above galaxies (and below) is that the axial "jet" when in an active emission stage from the plasmoid in the center of the galaxy emits plasma at sufficient amounts and at a high enough energy state to form filaments in the halo areas which then undergo z-pinches that form the stars.SpaceTravellor wrote:@mharratsc,
In my opinion, these clusters must once have been one superlarge sphere of gas that once was spewed out from the center of our galaxy, and later on exploded into several minor spheres or stars.
The reason that most of the star formation is in the arms of a galaxy is that as the electrical current (electrons and ions) enter the arms at their ends it is concentrated (constricted) by already existing magnetic fields (from concentrated plasma) and so there is more impetus for z-pinching in the arms, then as the electric current flows down the arms towards the plasmoid (completing the circuit) the plasma amount is added to, by the stars in the arms giving off plasma (think of a river increasing in size as additional tributaries add to the main channel) this addition in turn increases the strength of the concurrent magnetic fields (dependent on electric current) which causes plasma to concentrate and form z-pinches where stars are formed. The highest concentration of flowing plasma and magnetic fields is toward the plasmoid.
Electromagnetism is a positive reinforcement process.
I would add (my own two cents worth, here) that a star is either building or dissipating (adding plasma or giving off plasma), possibly another way to think of it is that a star is either "winding up" or "unwinding", depending on how strong the current is flowing into the star (these are not mutually exclusive processes) occasionally this "winding or unwinding" can be reversed by a new wave of intense electric current flowing past and into the star. I might also add that polarity or direction of electrical current plays a role. It seems that polarity (flow direction) is an important component of electrical dynamics, there are many examples that have been recorded where reversal of polarity is observed. This can happen at all levels and sizes of electric circuits. Known examples of polarity reversal are the North and South pole of the Earth are believed to have undergone polarity reversal, Sunspots undergo polarity reversal, and in Man's domain AC power generation and transmission operate on a polarity reversal principle.