77 citations · 334 across the 7 of their papers we have counts for
9 papers · 1 filter
Intergalactic baryon-rich regions at high redshift
A. Gayler Harford, Andrew J. S. Hamilton, Nickolay Y. Gnedin
Using a high resolution cosmological simulation of reionization we have examined the differing structures formed by gas and dark matter at a redshift of 5.1. Baryon-rich regions fo…
The Fate of the First Galaxies. III. Properties of Primordial Dwarf Galaxies and their Impact on the Intergalactic Medium
Massimo Ricotti, Nickolay Y. Gnedin, J. Michael Shull
In two previous papers, we presented simulations of the first galaxies in a representative volume of the Universe. The simulations are unique because we model feedback-regulated ga…
Resolving Gas Dynamics in the Circumnuclear Region of a Disk Galaxy in a Cosmological Simulation
Robyn Levine, Nickolay Y. Gnedin, Andrew J. S. Hamilton +1
Using a hydrodynamic adaptive mesh refinement code, we simulate the growth and evolution of a galaxy, which could potentially host a supermassive black hole, within a cosmological…
Are There Enough Ionizing Photons to Reionize the Universe by z=6?
Nickolay Y. Gnedin
An estimate for the number of ionizing photons per baryon as a function of redshift is computed based on the plausible extrapolation of the observed galaxy UV luminosity function a…
VOBOZ: An Almost-Parameter-Free Halo-Finding Algorithm
Mark C. Neyrinck, Nickolay Y. Gnedin, Andrew J. S. Hamilton
We have developed an algorithm to find haloes in an N-body dark matter simulation, called VOBOZ (VOronoi BOund Zones), which has as little dependence on free parameters as we can m…
Cosmology from Large Scale Structure
Andrew Hamilton, Nick Gnedin, Max Tegmark +1
We report on the linear matter power spectrum reconstructed from the Lyman alpha forest, on baryonic wiggles in the galaxy power spectrum, and on how to measure real space (as oppo…