Volume 498, Number 2, May I 2009
|Page(s)||357 - 359|
|Section||Cosmology (including clusters of galaxies)|
|Published online||05 March 2009|
Cosmic dark turbulence
Gunma Astronomical Observatory, 6860-86 Nakayama, Takayama Agatsuma, Gunma 377-0702, Japan e-mail: firstname.lastname@example.org
2 Department of Physics, Ochanomizu University, 2-1-1 Otsuka, Bunkyo, Tokyo 112-8610, Japan
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
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