Order out of Chaos : Self-Organization Processes in Astrophysics
Markus J. Aschwanden Submitted: 2017-08-10 15:57
Self-organization is a property of dissipative nonlinear processes
that are governed by an internal driver and a positive feedback
mechanism, which creates regular geometric and/or temporal patterns
and decreases the entropy, in contrast to random processes.
Here we investigate for the first time a comprehensive number of
16 self-organization processes that operate in planetary physics,
solar physics, stellar physics, galactic physics, and cosmology.
Self-organizing systems create spontaneous "order out of chaos",
during the evolution from an initially disordered system to an
ordered stationary system, via quasi-periodic limit-cycle dynamics,
harmonic mechanical resonances, or gyromagnetic resonances.
The internal driver can be gravity, rotation, thermal pressure,
or acceleration of nonthermal particles, while the positive
feedback mechanism is often an instability, such as the
magneto-rotational instability, the Rayleigh-Benard convection
instability, turbulence, vortex attraction, magnetic reconnection,
plasma condensation, or loss-cone instability. Physical models of
astrophysical self-organization processes involve hydrodynamic,
MHD, and N-body formulations of Lotka-Volterra equation systems.
Authors: Markus M. Aschwanden
Publication Status: SSRv (submission.2017 Aug 10)
Last Modified: 2017-08-15 17:09