Research Note

Cosmic dark turbulence

¹ Gunma Astronomical Observatory, 6860-86 Nakayama, Takayama Agatsuma, Gunma 377-0702, Japan e-mail: akika@astron.pref.gunma.jp
² Department of Physics, Ochanomizu University, 2-1-1 Otsuka, Bunkyo, Tokyo 112-8610, Japan

Received: 27 July 2008
Accepted: 28 January 2009

Abstract

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.