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Formation of a Spiral Galaxy in a Major Merger
(American Astronomical Society, 2005)
We use numerical simulations to examine the structure of merger remnants resulting from collisions of gas-rich spiral galaxies. When the gas fraction of the progenitors is small, the remnants structurally and kinematically ...
Baryons in the Warm‐Hot Intergalactic Medium
(American Astronomical Society, 2001)
The angular momentum of gas in protogalaxies — II. The impact of pre-heating
(Oxford University Press, 2003)
We examine the effect of pre-heating of the intergalactic medium on galaxy formation using cosmological hydrodynamical simulations. By performing simulations both with and without a simple model for pre-heating, we analyse ...
Detecting the Rise and Fall of 21 cm Fluctuations with the Murchison Widefield Array
(American Astronomical Society, 2008-06-10)
We forecast the sensitivity with which the Murchison Widefield Array (MWA) can measure the 21 cm power spectrum of cosmic hydrogen. The MWA is sensitive to roughly a decade in scale (wavenumbers of k similar to 0.1-1 h ...
A unified model for AGN feedback in cosmological simulations of structure formation
(Oxford University Press, 2007)
We discuss a numerical model for black hole growth and its associated feedback processes that for the first time allows cosmological simulations of structure formation to self-consistently follow the build up of the cosmic ...
The Evolution of Cuspy Triaxial Galaxies Harboring Central Black Holes
(American Astronomical Society, 2002)
We use numerical simulations to study the evolution of triaxial elliptical galaxies with central black holes. In contrast to earlier studies which used galaxy models with central density "cores," our galaxies have steep ...
The Luminosity Dependence of Quasar Clustering
(American Astronomical Society, 2005)
We investigate the luminosity dependence of quasar clustering, inspired by numerical simulations of galaxy mergers that incorporate black hole growth. These simulations have motivated a new interpretation of the quasar ...
The Relation between Quasar and Merging Galaxy Luminosity Functions and the Merger‐driven Star Formation History of the Universe
(American Astronomical Society, 2006)
Using a model for the self-regulated growth of supermassive BHs in mergers involving gas-rich galaxies, we study the relationship between quasars and the population of merging galaxies and predict the merger-driven SFR ...
Cosmic reionization by stellar sources: population III stars
(Oxford University Press, 2004)
We combine fast radiative transfer calculations with high-resolution hydrodynamical simulations to study an epoch of early hydrogen reionization by primordial stellar sources at redshifts 15less than or similar tozless ...