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Predictions of Quasar Clustering: Redshift, Luminosity and Selection Dependence
Robert J. Thacker, Evan Scannapieco, H. M. P. Couchman +1
We show that current clustering observations of quasars and luminous AGN can be explained by a merger model augmented by feedback from outflows. Using numerical simulations large e…
Stellar Feedback in Dwarf Galaxy Formation
Sergey Mashchenko, James Wadsley, H. M. P. Couchman
Dwarf galaxies pose significant challenges for cosmological models. In particular, current models predict a dark matter density that is divergent at the center, in sharp contrast w…
Measuring AGN Feedback with the Sunyaev-Zel'dovich Effect
Evan Scannapieco, Robert J. Thacker, H. M. P. Couchman
One of the most important and poorly-understood issues in structure formation is the role of outflows driven by active galactic nuclei (AGN). Using large-scale cosmological simulat…
Quasars: What turns them off?
Robert J. Thacker, Evan Scannapieco, H. M. P. Couchman
(Abridged) We explore the idea that the anti-hierarchical turn-off observed in the quasar population arises from self-regulating feedback, via an outflow mechanism. Using a detaile…
Cosmological puzzle resolved by stellar feedback in high redshift galaxies
Sergey Mashchenko, H. M. P. Couchman, James Wadsley
The standard cosmological model, now strongly constrained by direct observation at early epochs, is very successful in describing the structure of the evolved universe on large and…
A New Fast Parallel Statistical Measurement Technique for Computational Cosmology
R. J. Thacker, H. M. P. Couchman
Higher order cumulants of point processes, such as skew and kurtosis, require significant computational effort to calculate. The traditional counts-in-cells method implicitly requi…