The Origin of the Hubble Sequence in Lambda-CDM Cosmology (2009)
Benson, Andrew J., Devereux, Nick
The Galform semi-analytic model of galaxy formation is used to explore the mechanisms primarily responsible for the three types of galaxies seen in the local universe: bulge, bulge+disk and disk,...
Maximum spin of black holes driving jets (2009)
Benson, Andrew J., Babul, Arif
Unbound outflows in the form of highly collimated jets and broad winds appear to be a ubiquitous feature of accreting black hole systems. The most powerful jets are thought to derive a significant...
Maximum Spin of Black Holes Driving Jets (2009)
Benson, Andrew J., Babul, Arif
Unbounded outflows in the form of highly collimated jets and broad winds appear to be a ubiquitous feature of accreting black hole systems. The most powerful jets are thought to derive a significant...
Decontamination of cosmological 21-cm maps (2008)
Gleser, Liron, Nusser, Adi, Benson, Andrew J.
We present a method for extracting the expected cosmological 21-cm signal from the epoch of re-ionization, taking into account contaminating radiations and random instrumental noise. The method is...
The flip-side of galaxy formation: A combined model of Galaxy Formation and Cluster Heating (2008)
Bower, Richard G., McCarthy, Ian G., Benson, Andrew J.
Only ~10% of baryons in the universe are in the form of stars, yet most models of luminous structure formation have concentrated on the properties of the luminous stellar matter. In this paper we...
Constraining cold dark matter halo merger rates using the coagulation equations (2008)
We place additional constraints on the three parameters of the dark matter halo merger rate function recently proposed by Parkinson, Cole & Helly by utilizing Smoluchowski's coagulation equation,...
The Colours of Satellite Galaxies in Groups and Clusters (2008)
Font, Andreea S., Bower, Richard G., McCarthy, Ian G., Benson, Andrew J., Frenk, Carlos S., Helly, John C., ...
Current models of galaxy formation predict satellite galaxies in groups and clusters that are redder than observed. We investigate the effect on the colours of satellite galaxies produced by the ram...
Red Galaxy Growth and the Halo Occupation Distribution (2008)
Brown, Michael J. I., Zheng, Zheng, White, Martin, Dey, Arjun, Jannuzi, Buell T., Benson, Andrew J., ...
We have traced the past 7 Gyr of red galaxy stellar mass growth within dark matter halos. We have determined the halo occupation distribution, which describes how galaxies reside within dark matter...
Self-Consistent Theory of Halo Mergers - II: CDM Power Spectra (2008)
We place additional constraints on the three parameters of the dark matter halo merger rate function recently proposed by Parkinson, Cole & Helly by utilizing Smoluchowski's coagulation equation,...
Red galaxy growth and the halo occupation distribution (2008)
Brown, Michael J. I., Zheng, Zheng, White, Martin, Dey, Arjun, Jannuzi, Buell T., Benson, Andrew J., ...
We have traced the past 7 Gyr of red galaxy stellar mass growth within dark matter halos. We have determined the halo occupation distribution, which describes how galaxies reside within dark matter...
De-contamination of cosmological 21-cm maps (2007)
Gleser, Liron, Nusser, Adi, Benson, Andrew J.
We present a method for extracting the expected cosmological 21-cm signal from the epoch of reionization, taking into account contaminating radiations and random instrumental noise. The method is...
The SCUBA half degree extragalactic survey – IV. Radio–mm–FIR photometric redshifts (2007)
Aretxaga, Itziar, Hughes, David H., Coppin, Kristen, Mortier, Angela M. J., Wagg, Jeff, Dunlop, James S., ...
We present the redshift distribution of the Submillimetre Common-User Bolometer Array (SCUBA) Half Degree Survey (SHADES) galaxy population based on the rest-frame radio–mm–far-infrared (FIR)...
The SCUBA HAlf Degree Extragalactic Survey (SHADES) - IV: Radio-mm-FIR photometric redshifts (2007)
Aretxaga, Itziar, Hughes, David H., Coppin, Kristen, Mortier, Angela M. J., Wagg, Jeff, Dunlop, James S., ...
We present the redshift distribution of the SHADES galaxy population based on the rest-frame radio-mm-FIR colours of 120 robustly detected 850um sources in the Lockman Hole East (LH) and Subaru...
The evolving luminosity function of red galaxies (2007)
Brown, Michael J. I., Arjun, Dey, Jannuzi, Buell T., Brand, Kate, Benson, Andrew J., Brodwin, Mark, ...
We trace the assembly history of red galaxies since z = 1 by measuring their evolving space density with the B-band luminosity function. Our sample of 39,599 red galaxies, selected from 6.96 deg2 of...
The Evolving Luminosity Function of Red Galaxies (2006)
Brown, Michael J. I., Dey, Arjun, Jannuzi, Buell T., Brand, Kate, Benson, Andrew J., Brodwin, Mark, ...
We trace the assembly history of red galaxies since z=1, by measuring their evolving space density with the B-band luminosity function. Our sample of 39599 red galaxies, selected from 6.96 square...
Supermassive Black Hole Merger Rates: Uncertainties from Halo Merger Theory (2006)
Erickcek, Adrienne L., Kamionkowski, Marc, Benson, Andrew J.
The merger of two supermassive black holes is expected to produce a gravitational-wave signal detectable by the satellite LISA. The rate of supermassive-black-hole mergers is intimately connected to...
Modeling tidal streams in evolving dark matter halos (2006)
Peñarrubia, Jorge, Benson, Andrew J., Martínez-Delgado, David, Rix, Hans Walter
We explore whether stellar tidal streams can provide information on the secular, cosmological evolution of the Milky Way's gravitational potential and on the presence of subhalos. We carry out...
Modeling Tidal Streams in evolving dark matter halos (2005)
Penarrubia, Jorge, Benson, Andrew J., Martinez-Delgado, David, Rix, Hans-Walter
We explore whether stellar tidal streams can provide information on the secular, cosmological evolution of the Milky Way's gravitational potential and on the presence of subhalos. We carry out...
Pedersen, Kristian, Rasmussen, Jesper, Sommer-Larsen, Jesper, Toft, Sune, Benson, Andrew J., Bower, Richard G.
Hot gaseous haloes surrounding galaxies and extending well beyond the distribution of stars are a ubiquitous prediction of galaxy formation scenarios. The haloes are believed to consist of...
Effects of dynamical evolution on the distribution of substructures (2005)
Peñarrubia, Jorge, Benson, Andrew J.
We develop a semi-analytical model that determines the evolution of the mass and position of dark matter substructures orbiting in dark matter haloes. We apply this model to the case of the Milky...
Patchy He II reionization and the physical state of the IGM (2004)
Gleser, Liron, Nusser, Adi, Benson, Andrew J., Ohno, Hiroshi, Sugiyama, Naoshi
We present a Monte-Carlo model of He II reionization by QSOs and its effect on the thermal state of the clumpy intergalactic medium (IGM). The model assumes that patchy reionization develops as a...
Zheng, Zheng, Berlind, Andreas A., Weinberg, David H., Benson, Andrew J., Baugh, Carlton M., Cole, Shaun, ...
The halo occupation distribution (HOD) describes the relation between galaxies and dark matter at the level of individual dark matter halos. The properties of galaxies residing at the centers of...
Orbital Parameters of Infalling Dark Matter Substructures (2004)
We present distributions of the orbital parameters of dark matter substructures at the time of merging into their host halo. Accurate knowledge of the orbits of dark matter substructures is a crucial...
Self-Consistent Theory of Halo Mergers (2004)
Benson, Andrew J., Kamionkowski, Marc, Hassani, Steven H.
The rate of merging of dark-matter halos is an absolutely essential ingredient for studies of both structure and galaxy formation. Remarkably, however, our quantitative understanding of the halo...
The Halo Occupation Distribution and the Physics of Galaxy Formation (2002)
Berlind, Andreas A., Weinberg, David H., Benson, Andrew J., Baugh, Carlton M., Cole, Shaun, Davé, Romeel, ...
The halo occupation distribution (HOD) describes the bias between galaxies and dark matter by specifying (a) the probability P(N|M) that a halo of virial mass M contains N galaxies of a particular...
Polarization of the Cosmic Microwave Background from Non-Uniform Reionization (2001)
Liu, Guo-Chin, Sugiyama, Naoshi, Benson, Andrew J., Lacey, C. G., Nusser, Adi
We study the signal in the Cosmic Microwave Background (CMB) polarization anisotropy resulting from patchy reionization. It is well known that the primordial polarization of the CMB is very sensitive...
Measuring the Distribution of Galaxies Between Halos (2001)
We develop a method to measure the probability, P(N;M), of finding N galaxies in a dark-matter halo of mass M from the theoretically determined clustering properties of dark-matter halos and the...
On Galaxy-Cluster Sizes and Temperatures (2000)
Verde, Licia, Kamionkowski, Marc, Mohr, Joseph J., Benson, Andrew J.
We show that the distribution of the sizes and temperatures of clusters can be used to constrain cosmological models. The size-temperature (ST) distribution predicted in a flat Gaussian...