Cosmic dark turbulenceA. Nakamichi1 and M. Morikawa2
1 Gunma Astronomical Observatory, 6860-86 Nakayama, Takayama Agatsuma, Gunma 377-0702, Japan
2 Department of Physics, Ochanomizu University, 2-1-1 Otsuka, Bunkyo, Tokyo 112-8610, Japan
Received 27 July 2008 / Accepted 28 January 2009
We aim for a consistent understanding of various scaling relations reported for self-gravitating systems, based on the proposal that the collisionless dark matter fluid turns into a turbulent state, i.e. dark turbulence, after crossing the caustic surface in the non-linear stage. Kolmogorov scaling laws with a constant energy flow per mass of 0.3 cm2/s3 are suggested from observations.
Key words: cosmology: theory -- gravitation -- turbulence -- cosmology: dark matter -- cosmology: observations -- hydrodynamics
© ESO 2009