Volume 88, Number 4, November 2009
Article Number 49001
Number of page(s) 6
Section Geophysics, Astronomy and Astrophysics
Published online 02 December 2009
EPL, 88 (2009) 49001
DOI: 10.1209/0295-5075/88/49001

Gravitational hydrodynamics of large-scale structure formation

Th. M. Nieuwenhuizen1, C. H. Gibson2 and R. E. Schild3

1   Institute for Theoretical Physics - Valckenierstraat 65, 1018 XE Amsterdam, The Netherlands, EU
2   Mechanical and Aerospace Engineering & Scripps Institution of Oceanography Departments, UCSD La Jolla, CA 92093, USA
3   Harvard-Smithsonian Center for Astrophysics - 60 Garden Street, Cambridge, MA 02138, USA

received 27 June 2009; accepted in final form 26 October 2009; published November 2009
published online 2 December 2009

The gravitational hydrodynamics of the primordial plasma with neutrino hot dark matter is considered as a challenge to the bottom-up cold-dark-matter paradigm. Viscosity and turbulence induce a top-down fragmentation scenario before and at decoupling. The first step is the creation of voids in the plasma, which expand to 37 Mpc on the average now. The remaining matter clumps turn into galaxy clusters. At decoupling galaxies and Jeans clusters arise; the latter constitute the galactic dark-matter halos and consist themselves of earth mass milli brown dwarfs. Frozen milli brown dwarfs are observed in microlensing and white-dwarf-heated ones in planetary nebulae. The approach explains the Tully-Fisher and Faber-Jackson relations, and cosmic microwave background temperature fluctuations of sub-milli-kelvins.

98.80.Bp - Origin and formation of the Universe.
95.35.+d - Dark matter (stellar, interstellar, galactic, and cosmological).
98.20.Jp - Globular clusters in external galaxies.

© EPLA 2009