Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-02-22
Astronomy and Astrophysics
Astrophysics
12 pages, invited contribution to the conference "Chaos in Astronomy", Athens, sept. 2007, eds. G. Contopoulos & P.A. Patsis
Scientific paper
After general considerations about limits of theories and models, where small changes may imply large effects, we discuss three cases in galactic astrophysics illustrating how galactic dynamics models may become insufficient when previously neglected effects are taken into account: 1) Like in 3D hydrodynamics, the non-linearity of the Poisson-Boltzmann system may imply dissipation through the growth of discontinuous solutions. 2) The relationship between the microscopic exponential sensitivity of N-body systems and the stability of mean field galaxy models. 3) The role of quantum physics in the dynamics of structure formation, considering that cosmological neutrinos are massive and semi-degenerate fermions.
No associations
LandOfFree
Chaos in Galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Chaos in Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chaos in Galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-303157