We use the large catalogues of haloes available for the Millennium Simulation to test whether recently merged haloes exhibit stronger large-scale clustering than other haloes of the same mass. This effect could help to understand the very strong clustering of quasars at high redshift. However, we find no statistically significant excess bias for recently merged haloes over the redshift range 2 ...

The uptake of Zn by Illite du Puy (IdP) and two argillaceous rocks, Opalinus Clay (OPA) Boda Claystone (BODA) was investigated. illite studied in 0.1 M NaCl at near-neutral pH loadings varying from 2.1 to 42 mmol/kg. the rock systems carried out 7.2 their respective porewaters 8.0 evaluate influence porewater composition. varied 1.8 86 mmol/kg 1.7 60 for OPA BODA, respectively. simplified “bott...

If the dark matter particle is a neutralino then the first structures to form are cuspy cold dark matter (CDM) haloes collapsing after redshifts z ≈ 100 in the mass range 10 − 10 M⊙. We carry out a detailed study of the survival of these micro-haloes in the Galaxy as they experience tidal encounters with stars, molecular clouds, and other dark matter substructures. We test the validity of analy...

We explore a possible origin for the puzzling anti-correlation between the formation epoch of galactic dark-matter haloes and their environment density. This correlation has been revealed from cosmological N -body simulations and is in conflict with the Extended Press-Schechter model of halo clustering. Using similar simulations, we first quantify the straightforward association of an early for...

the gold mineralization in kurdistan province of iran was classified as shear zone gold type by some of the researchers. in the current study, the geochemical samples collected from the secondary environment, stream sediments, at the sw of saqquez area were used to investigate the geochemical characteristics of the gold mineralized zones in this environment. the multi-variant statistical analys...

alteration was ohserved along minor subsidiary faults in the northwest and northeast parts of Iron Range Mountain. The main Iron Range deposit consists of the segment of the ault containing the richest iron mineralization and underlies the northern half of the ridge which makes up Iron Range Mountain. This area extends northward onto the Grassy Mountain sheet (82FB). The area of m...

We explore the clustering properties of high redshift dark matter haloes, focusing on haloes massive enough to host early generations of stars or galaxies at redshift 10 and greater. Haloes are extracted from an array of dark matter simulations able to resolve down to the “mini-halo” mass scale at redshifts as high as 30, thus encompassing the expected full mass range of haloes capable of hosti...

Studies of the peculiar velocities of galaxies and clusters of galaxies suggest that much of the matter of the universe is dark. The spatial distribution of light, the galaxies, is most probably not the same as the distribution of the dark matter. I present a very biased view of how these two distributions are related. In this view, galaxies form in gravita-tionally bound dark matter haloes, an...

We investigate the impact finite simulation box size has on the structural and kinematic properties of Cold Dark Matter haloes forming in cosmological simulations. Our approach involves generating a single realisation of the initial power spectrum of density perturbations and studying how truncation of this power spectrum on scales larger than Lcut = 2π/kcut affects the structure of dark matter...