# The return of cold dark matter

## Related Articles

- The equivalence between different Dark (matter) energy scenarios. Arbab, Arbab I. // Astrophysics & Space Science;2004, Vol. 291 Issue 2, p141
We have shown that the phenomenological models with a cosmological constant of the type Î›=Î²($\backslash frac\{\backslash ddot\; R\}\{R\}$) and Î›=3Î±H2, where R is the scale factor of the universe and H is the Hubble constant, are equivalent to a quintessence model with a scalar (Ï†) potential...

- Dark matter front runner squares up to new challengers. Ananthaswamy, Anil // New Scientist;5/31/2008, Vol. 198 Issue 2658, p18
The article reports that physicists have reassessed the reasons for making the hypothetical neutralino particle the best candidate to explain dark matter, which is thought to compose 90% of the universe's mass. A radical rethinking of theories on dark matter can be prompted by the discovery that...

- Phantom Energy with Variable G and Î›. Arbab, Arbab I. // AIP Conference Proceedings;4/17/2009, Vol. 1115 Issue 1, p230
We have investigated a cosmological model of a phantom energy with a variable cosmo-logical constant (Î›) depending on the energy density (Ï) as Î›âˆÏ-Î±, Î± = const. and a variable gravitational constant (G). The model requires Î±<0 and a negative gravitational constant....

- Why Outflows Have Low Angular Momentum. Brook, C.; Governato, F.; Rosškar, R.; Brooks, A.; Mayer, L.; Quinn, T.; Wadsley, J. // AIP Conference Proceedings;6/8/2010, Vol. 1240 Issue 1, p203
We outline why galactic outflows preferentially remove low angular momentum material, and show that this is a natural result when structure forms in a cold dark matter cosmology. The driving factors are the fact that the mean angular momentum of accreted material increases with time, the...

- Laser Boost of a Small Interstellar Ram Jet to Obtain Operational Velocity. Implications for the DM Rocket/Ram Jet Model. Walcott Beckwith, Andrew // AIP Conference Proceedings;5/6/2010, Vol. 1230 Issue 1, p219
In other conference research papers, Beckwith obtained a maximum DM mass/energy value of up to 5 TeV, as opposed to 400 GeV for DM, which may mean more convertible power for a dark matter ram jet. The consequences are from assuming that axions are CDM, and KK gravitons are for WDM, then...

- Tepid stuff. // New Scientist;2/11/2006, Vol. 189 Issue 2538, p7
The article presents information on the contents of dark matter. Astronomers at the University of Cambridge made detailed observations of 12 dwarf galaxies near the Milky Way to calculate how much dark matter must be holding them together. They found that dark matter clumps together in building...

- Lost and found dark matter in elliptical galaxies. Dekel, A.; Stoehr, F.; Mamon, G. A.; Cox, T. J.; Novak, G. S.; Primack, J. R. // Nature;9/29/2005, Vol. 437 Issue 7059, p707
There is strong evidence that the mass of the Universe is dominated by dark matter, which exerts gravitational attraction but whose exact nature is unknown. In particular, all galaxies are believed to be embedded in massive haloes of dark matter. This view has recently been challenged by the...

- Dark Matter and Galaxy Formation: Challenges for the Next Decade. Silk, Joseph // AIP Conference Proceedings;2004, Vol. 743 Issue 1, p33
The origin of the galaxies represents an important focus of current cosmological research, both observational and theoretical. Its resolution involves a comprehensive understanding of star formation, galaxy dynamics, the cosmology of the very early universe, and the nature of the dark matter. In...

- Reconstructing the interaction term between dark matter and dark energy. Cueva, Freddy; Nucamendi, Ulises // AIP Conference Proceedings;7/12/2010, Vol. 1256 Issue 1, p256
We apply a parametric reconstruction method to a homogeneous, isotropic and spatially flat Friedmann-Robertson-Walker (FRW) cosmological model filled of a fluid of dark energy (DE) with constant equation of state parameter interacting with dark matter (DM). The reconstruction method is based on...