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Andrew BensonSenior Research Fellow in Theoretical Cosmology
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AstroPhysics Including Relativity |
| I am a Senior Research Fellow in Theoretical Cosmology within the TAPIR group at Caltech and a member of the Moore Center for Theoretical Cosmology and Physics. My research is described in more detail here and my publications are available here. I'm actively looking for graduate and undergraduate students to work on galaxy formation-related projects. Current projects on which I'm working, together with available projects for prospective students and postdocs are listed here. | ||
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With Arif Babul, I am developing a more sophisticated model of black hole growth and jet production which is embedded within a hierarchically growing population of galaxies. As part of this work we have developed a relatively simple model to compute the rate of spin up (or down) of an accreting black hole and the power of the jets it produces while accreting. The figure shows the efficiency (measured relative to the accretion luminosity) of jets driven out of supermassive black hole plus accretion flow systems as a function of the spin (j) of the black hole. The jet efficiency is divided into contributions from winds driven from the accretion disk, and jets launched from close to the black hole horizon. Points show results from relativistic magnetohydrodynamics simulations, while the lines indicate the results from my model of jet efficiency. This model is simple to implement in analytic calculations but agrees extremely well with relativistic magneto-hydrodynamic calculations. |
- 0 Grand unification of AGN activity in the LambdaCDM cosmology; Fanidakis, N.; Baugh, C. M.; Benson, A. J.; Bower, R. G.; Cole, S.; Done, C.; Frenk, C. S. (2009)
- 0 Galactic stellar haloes in the CDM model;Cooper, A. P.; Cole, S.; Frenk, C. S.; White, S. D. M.; Helly, J.; Benson, A. J.; De Lucia, G.; Helmi, A.; Jenkins, A.; Navarro, J. F.; Springel, V.; Wang, J. (2009)
- 0 Predictions for Herschel from LambdaCDM: unveiling the cosmic star formation history; Lacey C. G.; Baugh C. M.; Frenk C. S.; Benson A. J.; Orsi A.; Silva L.; Granato G. L.; Bressan A. (2009)
- 1 Maximum spin of black holes driving jets ; Benson A. J.; Babul A. (2009)
- 1 Testing model predictions of the cold dark matter cosmology for the sizes, colours, morphologies and luminosities of galaxies with the SDSS ; González J. E.; Lacey C. G.; Baugh C. M.; Frenk C. S.; Benson A. J. (2009)
- 1 The Evolutionary History of Lyman Break Galaxies Between Redshift 4 and 6: Observing Successive Generations of Massive Galaxies in Formation ; Stark D. P.; Ellis R. S.; Bunker A.; Bundy K.; Targett T.; Benson A.; Lacy M. (2009)
- 0 Modelling galaxy clustering: Is new physics needed in galaxy formation models? ; Seek Kim H.; Baugh C. M.; Cole S.; Frenk C. S.; Benson A. J. (2009)
- 1 Hot Gas Halos Around Disk Galaxies: Confronting Cosmological Simulations with Observations ; Rasmussen J.; Sommer-Larsen J.; Pedersen K.; Toft S.; Benson A.; Bower R. G.; Grove L. F. (2009)
- 1 Mock observations with the Millennium Simulation: cosmological downsizing and intermediate-redshift observations ; Stringer M. J.; Benson A. J.; Bundy K.; Ellis R. S.; Quetin E. L. (2009)
- 1 Decontamination of cosmological 21-cm maps ; Gleser L.; Nusser A.; Benson A. J. (2008)
- 1 The flip side of galaxy formation: a combined model of galaxy formation and cluster heating ; Bower R. G.; McCarthy I. G.; Benson A. J. (2008)
- 1 The colours of satellite galaxies in groups and clusters ; Font A. S.; Bower R. G.; McCarthy I. G.; Benson A. J.; Frenk C. S.; Helly J. C.; Lacey C. G.; Baugh C. M.; Cole S. (2008)
- 1 Constraining cold dark matter halo merger rates using the coagulation equations ; Benson A. J. (2008)
- 1 Red Galaxy Growth and the Halo Occupation Distribution ; Brown M. J. I.; Zheng Z.; White M.; Dey A.; Jannuzi B. T.; Benson A. J.; Brand K.; Brodwin M.; Croton D. J. (2008)
- 1 Luminous red galaxies in hierarchical cosmologies ; Almeida C.; Baugh C. M.; Wake D. A.; Lacey C. G.; Benson A. J.; Bower R. G.; Pimbblet K. (2008)
- 0 Modeling the Formation and Evolution of Disk Galaxies ; Stringer M. J.; Benson A. J. (2008)
- 0 SCUBA Half-Degree Extragalactic Survey. IV (Aretxaga+, 2007) ; Aretxaga I.; ...; ...; ...; ...; ...; ...; ...; ...; ...; ...; ...; ...; ...; ...; ...; Benson A. J. et al. (2008)
- 1 The SCUBA HAlf Degree Extragalactic Survey - VI. 350-μm mapping of submillimetre galaxies ; Coppin K.; ...; ...; ...; ...; ...; ...; ...; ...; ...; Benson A. et al. (2008)
- 1 The formation of galaxy discs in a hierarchical universe ; Stringer M. J.; Benson A. J. (2007)
- 0 The Effect Of Inhomogeneous Reionization On The Spectral Properties Of Massive Galaxies ; Babich D.; Benson A.; Zahn O.; Stark D. (2007)
- 0 The Nature of (Sub)millimeter Galaxies in Hierarchical Models ; Baugh C. M.; Lacey C. G.; Frenk C. S.; Granato G. L.; Silva L.; Bressan A.; Benson A. J.; Cole S. (2007)
- 1 Large Structures and Galaxy Evolution in COSMOS at z < 1.1 ; Scoville N.; ...; Benson A. et al. (2007)
- 1 COSMOS: Hubble Space Telescope Observations ; Scoville N.; ...; ...; ...; Benson A. et al. (2007)
- 1 The SCUBA Half Degree Extragalactic Survey - IV. Radio-mm-FIR photometric redshifts ; Aretxaga I.; ...; ...; ...; ...; ...; ...; ...; ...; ...; ...; ...; ...; ...; ...; ...; Benson A. J. et al. (2007)
- 1 Luminosity and stellar mass functions of discs and spheroids in the SDSS and the supermassive black hole mass function ; Benson A. J.; Džanović D.; Frenk C. S.; Sharples R. (2007)
- 0 The Evolving Luminosity Function of Red Galaxies ; Jannuzi B.; Brown M. J.; Dey A.; Brand K.; Benson A.; Brodwin M.; Croton D.; Eisenhardt P. (2007)
- 1 Tidal mass loss from collisionless systems ; Kampakoglou M.; Benson A. J. (2007)
- 1 The Evolving Luminosity Function of Red Galaxies ; Brown M. J. I.; Dey A.; Jannuzi B. T.; Brand K.; Benson A. J.; Brodwin M.; Croton D. J.; Eisenhardt P. R. (2007)
- 1 Supermassive black hole merger rates: uncertainties from halo merger theory ; Erickcek A. L.; Kamionkowski M.; Benson A. J. (2006)
- 0 Investigating hot gas in the halos of two massive spirals: Observations and cosmological simulations ; Rasmussen J.; Sommer-Larsen J.; Pedersen K.; Toft S.; Benson A.; Bower R. G.; Olsen L. F. (2006)
- 1 Breaking the hierarchy of galaxy formation ; Bower R. G.; Benson A. J.; Malbon R.; Helly J. C.; Frenk C. S.; Baugh C. M.; Cole S.; Lacey C. G. (2006)
- 1 The epoch of reionization ; Benson A. J.; Sugiyama N.; Nusser A.; Lacey C. G. (2006)
- 1 Modeling Tidal Streams in Evolving Dark Matter Halos ; Peñarrubia J.; Benson A. J.; Martínez-Delgado D.; Rix H. W. (2006)
- 1 Discovery of a very extended X-ray halo around a quiescent spiral galaxy The “missing link” of galaxy formation ; Pedersen K.; Rasmussen J.; Sommer-Larsen J.; Toft S.; Benson A. J.; Bower R. G. (2006)
- 0 The nature of (sub)-mm galaxies in hierarchical models ; Baugh C. M.; Lacey C. G.; Frenk C. S.; Granato G. L.; Silva L.; Bressan A.; Benson A. J.; Cole S. (2006)
- 1 Erratum: Orbital parameters of infalling dark matter substructures ; Benson A. J. (2005)
- 1 Effects of dynamical evolution on the distribution of substructures ; Peñarrubia J.; Benson A. J. (2005)
- 1 Theoretical Models of the Halo Occupation Distribution: Separating Central and Satellite Galaxies ; Zheng Z.; Berlind A. A.; Weinberg D. H.; Benson A. J.; Baugh C. M.; Cole S.; Davé R.; Frenk C. S.; Katz N.; Lacey C. G. (2005)
- 1 The SCUBA Half-Degree Extragalactic Survey - I. Survey motivation, design and data processing ; Mortier A. M. J.; ...; ...; ...; ...; ...; ...; ...; ...; Benson A. J. et al. (2005)
- 0 Small scales, big issues for cold dark matter ; Benson A. J. (2005)
- 1 Patchy He II reionization and the physical state of the intergalactic medium ; Gleser L.; Nusser A.; Benson A. J.; Ohno H.; Sugiyama N. (2005)
- 1 Orbital parameters of infalling dark matter substructures ; Benson A. J. (2005)
- 0 AGN and the necessity of feedback: One contribution of 13 to a Discussion Meeting 'The impact of active galaxies on the Universe at large' ; Benson A. J. (2005)
- 1 Self-consistent theory of halo mergers ; Benson A. J.; Kamionkowski M.; Hassani S. H. (2005)
- 1 Can the faint submillimetre galaxies be explained in the Λ cold dark matter model? ; Baugh C. M.; Lacey C. G.; Frenk C. S.; Granato G. L.; Silva L.; Bressan A.; Benson A. J.; Cole S. (2005)
- 1 Predictions for the SKA from hierarchical galaxy formation models ; Baugh C. M.; Lacey C. G.; Frenk C. S.; Benson A. J.; Cole S.; Granato G. L.; Silva L.; Bressan A. (2004)
- 0 Heating of Galaxy Disks by Dark Satellites ; Benson A. J.; Lacey C. G.; Frenk C. S.; Cole S.; Baugh C. M. (2004)
- 0 Galaxy formation modeling ; Benson A. J. (2004)
- 1 Heating of galactic discs by infalling satellites ; Benson A. J.; Lacey C. G.; Frenk C. S.; Baugh C. M.; Cole S. (2004)
- 1 What Shapes the Luminosity Function of Galaxies? ; Benson A. J.; Bower R. G.; Frenk C. S.; Lacey C. G.; Baugh C. M.; Cole S. (2003)
- 0 A Comparison of Theoretical Models of Galaxy Evolution: Consequences for High Redshift Star Formation ; Idzi R.; Ferguson H. C.; Somerville R. S.; Babul A.; Benson A. J.; Dave R.; Lotz J. (2003)
- 1 Early preheating and galaxy formation ; Benson A. J.; Madau P. (2003)
- 1 The effects of photoionization on galaxy formation - III. Environmental dependence in the luminosity function ; Benson A. J.; Frenk C. S.; Baugh C. M.; Cole S.; Lacey C. G. (2003)
- 1 The Halo Occupation Distribution and the Physics of Galaxy Formation ; Berlind A. A.; Weinberg D. H.; Benson A. J.; Baugh C. M.; Cole S.; Davé R.; Frenk C. S.; Jenkins A.; Katz N.; Lacey C. G. (2003)
- 0 The Interplay Between Galaxy Formation and the IGM ; Benson A. J.; Lacey C. G.; Frenk C. S.; Cole S.; Baugh C. M. (2003)
- 1 Entropy injection as a global feedback mechanism ; Oh S. P.; Benson A. J. (2003)
- 1 Galaxy voids in cold dark matter universes ; Benson A. J.; Hoyle F.; Torres F.; Vogeley M. S. (2003)
- 1 A comparison of gas dynamics in smooth particle hydrodynamics and semi-analytic models of galaxy formation ; Helly J. C.; Cole S.; Frenk C. S.; Baugh C. M.; Benson A.; Lacey C.; Pearce F. R. (2003)
- 1 Galaxy formation using halo merger histories taken from N-body simulations ; Helly J. C.; Cole S.; Frenk C. S.; Baugh C. M.; Benson A.; Lacey C. (2003)
- 0 The Evolution of Galaxy Mass in Hierarchical Models ; Baugh C. M.; Benson A. J.; Cole S.; Frenk C. S.; Lacey C. (2003)
- 0 Quantitative Study of Galaxy Morphology ; Džanović D.; Sharples R. M.; Benson A. J.; Frenk C. S. (2003)
- 1 Statistics of Neutral Regions during Hydrogen Reionization ; Nusser A.; Benson A. J.; Sugiyama N.; Lacey C. (2002)
- 0 Comparing Baryonic and Halo Disk Galaxy Masses to z=1 ; Conselice C. J.; Bundy K.; Ellis R. S.; Vogt N.; Brinchmann J.; Benson A. (2002)
- 0 Galaxy Formation ; Benson A. (2002)
- 1 On the continuous formation of field spheroidal galaxies in hierarchical models of structure formation ; Benson A. J.; Ellis R. S.; Menanteau F. (2002)
- 0 From the End of the Dark Ages to Now ; Benson A. (2002)
- 1 The Luminosity Functions and Stellar Masses of Galactic Disks and Spheroids ; Benson A. J.; Frenk C. S.; Sharples R. M. (2002)
- 1 The effects of photoionization on galaxy formation - II. Satellite galaxies in the Local Group ; Benson A. J.; Frenk C. S.; Lacey C. G.; Baugh C. M.; Cole S. (2002)
- 1 The effects of photoionization on galaxy formation - I. Model and results at z=0 ; Benson A. J.; Lacey C. G.; Baugh C. M.; Cole S.; Frenk C. S. (2002)
- 1 Statistics of Sunyaev-Zel'dovich cluster surveys ; Benson A. J.; Reichardt C.; Kamionkowski M. (2002)
- 0 Polarization of the Cosmic Microwave Background from non-uniform reionization ; Liu G.-C.; Sugiyama N.; Benson A. J.; Lacey C. G.; Nusser A. (2002)
- 0 The Effects of Photoionization on Galaxy Formation ; Benson A. J.; Lacey C.; Baugh C.; Cole S.; Frenk C. (2002)
- 1 The clustering evolution of the galaxy distribution ; Benson A. J.; Frenk C. S.; Baugh C. M.; Cole S.; Lacey C. G. (2001)
- 1 Polarization of the Cosmic Microwave Background from Nonuniform Reionization ; Liu G.-C.; Sugiyama N.; Benson A. J.; Lacey C. G.; Nusser A. (2001)
- 1 Measuring the distribution of galaxies between haloes ; Benson A. J. (2001)
- 1 The impact of galaxy formation on the X-ray evolution of clusters ; Bower R. G.; Benson A. J.; Lacey C. G.; Baugh C. M.; Cole S.; Frenk C. S. (2001)
- 0 The Effects of a Photoionizing Background on Galaxy Formation ; Benson A. J.; Lacey C. G.; Frenk C. S.; Cole S.; Baugh C. M. (2001)
- 1 Galaxy formation and clustering in a hierarchichal Universe ; Benson A. J. (2001)
- 1 On galaxy cluster sizes and temperatures ; Verde L.; Kamionkowski M.; Mohr J. J.; Benson A. J. (2001)
- 1 A comparison of semi-analytic and smoothed particle hydrodynamics galaxy formation ; Benson A. J.; Pearce F. R.; Frenk C. S.; Baugh C. M.; Jenkins A. (2001)
- 1 Non-uniform reionization by galaxies and its effect on the cosmic microwave background ; Benson A. J.; Nusser A.; Sugiyama N.; Lacey C. G. (2001)
- 0 Semi-analytic galaxy formation: understanding the high redshift universe ; Baugh C. M.; Benson A. J.; Cole S.; Frenk C. S.; Lacey C. G. (2001)
- 0 Galaxy Formation at High Redshifts: the View from the NGST. ; Benson A. J.; Benson A. J.; Frenk C. S.; Baugh C. M.; Cole S.; Lacey C. G. (2001)
- 0 The evolution of disc galaxies ; Cole S. M.; Baugh C.; Frenk C.; Lacey C.; Benson A. (2000)
- 1 The dependence of velocity and clustering statistics on galaxy properties ; Benson A. J.; Baugh C. M.; Cole S.; Frenk C. S.; Lacey C. G. (2000)
- 1 Diffuse X-ray emission from late-type galaxy haloes ; Benson A. J.; Bower R. G.; Frenk C. S.; White S. D. M. (2000)
- 0 The effect of mid-frequency wavefront errors on NGST faint-galaxy photometry ; Nieto-Santisteban M. A.; Ferguson H.; Bely P.; Trauger J.; Benson A. (2000)
- 1 The nature of galaxy bias and clustering ; Benson A. J.; Cole S.; Frenk C. S.; Baugh C. M.; Lacey C. G. (2000)
- 0 The Evolution of Galaxy Clustering in Hierachical Models ; Cole S.; Benson A.; Baugh C.; Lacey C.; Frenk C. (2000)
- 1 Modelling the evolution of galaxy clustering ; Baugh C. M.; Benson A. J.; Cole S.; Frenk C. S.; Lacey C. G. (1999)
- 1 Ultra high energy cosmic rays and the Galactic halo ; Benson A.; Smialkowski A.; Wolfendale A. W. (1999)
- 0 Ab Initio Galaxy Formation ; Baugh C. M.; Benson A. J.; Cole S.; Frenk C. S.; Lacey C. G. (1999)
- 0 Early-Type Galaxies in the Hierarchical Universe ; Baugh C. M.; Cole S.; Frenk C. S.; Benson A. J.; Lacey C. G. (1999)
- 0 Hybrid galaxy formation ; Benson A. J.; Cole S.; Frenk C. S.; Baugh C. M.; Lacey C. G. (1998)
- 1 MACHO masses from satellite observations ; Benson A. J.; Leech R. (1998)
| (c) Andrew Benson, 2006-9. All rights reserved. Accessible Website Menu by Brothercake Scrolling News Ticker by Mioplanet Page last updated Monday, September 14, 2009. |