Other
Scientific paper
Nov 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004asthe..97..655o&link_type=abstract
The Astronomical Herald (ISSN 0374-2466), Vol. 97, No. 11, p. 655 - 661 (2004)
Other
Clusters Of Galaxies, Plasma
Scientific paper
It has been unveiled by recent X-ray observations that the low-density and high-temperature plasma in clusters of galaxies have various unexpected and complicated structures, e.g., inhomogeneous temperature distributions. One of the keywords with respect to those structures is the deviation from the thermal equilibrium state, in other words, the deviation of the velocity distribution function from the Maxwell-Boltzmann. The study of the plasma phenomena in clusters of galaxies considering that, cannot be treated in the framework of the hydrodynamic approximation but need to be treated by the Boltzmann equation which describes the time evolution of the velocity distribution function. That approach is called "the plasma kinetic theory." We introduce one of our recent results of studies of cluster plasma kinetic theory. The magnetic fields are generated by the plasma microscopic instability in the plasma with temperature gradients. Field strengths predicted by this mechanism agree with the observed field strengths in the various states of clusters of galaxies.
Hattori Makoto
Okabe Nobuhiro
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