Effects of plasma on friedman/fluid/acceleration equations

[dicerandom]

Hi all,

I'm currently taking a course in introductory cosmology, last quarter I had an introductory course in plasma physics. Something that's been bothering me through the course of my cosmo class is the fact that plasma effects are entirely ignored even though it's acknowledged that, for instance, in the Coma cluster the ratio of intergalactic plasma mass to steller mass is on the order of 10.

I'm wondering what effects taking the mostly-plasma nature of matter into account would have on both large scale cosmology and medium-range effects such as interactions within clusters of galaxies. Could someone point me towards some good (but hopefully still accessable) papers on these subjects?

[Chronos]

The plasma thing is very difficult to fit observational evidence. Try this:

Simulating the Soft X-ray excess in clusters of galaxies
http://arxiv.org/abs/astro-ph/0409707

[hellfire]

I think that there is some kind of agreement that magnetic fields produced by plasmas could had played an important role that is not fully understood in cosmological dynamics and structure formation. As far as I know there are actually not many quantitative results and simulations. If you are interested on magnetic fields and stucture formation search for the work of Eduardo Battaner and Estrella Florido of the University of Granada.

[SpaceTiger]

Here's a paper about the interplay between magnetic fields and forming galaxies:

The Protogalactic Origin for Cosmic Magnetic Fields (http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1997ApJ...480..481K&db_key=AST&d ata_type=HTML&format=&high=4349a261f106298)