Publications (186)
Hidden from view: Coupled Dark Sector Physics and Small Scales
Pascal J. Elahi, Geraint F. Lewis, Chris Power +2
The Lives of High Redshift Mergers
Tom McCavana, Miroslav Micic, Geraint F. Lewis +4
The Alcubierre Warp Drive: On the Matter of Matter
Brendan McMonigal, Geraint F. Lewis, Philip O'Byrne
The photometric properties of a vast stellar substructure in the outskirts of M33
Alan W. McConnachie, Annette M. N. Ferguson, Michael J. Irwin +5
Mapping Growth and Gravity with Robust Redshift Space Distortions
Juliana Kwan, Geraint F. Lewis, Eric V. Linder
MARZ: Manual and Automatic Redshifting Software
Samuel R. Hinton, Tamara M. Davis, Chris Lidman +2
Was SN1997ff at z~1.7 magnified by gravitational lensing?
Geraint F. Lewis, Rodrigo A. Ibata
B1933+503, a dusty radio quasar at z>2: implications for blank field sub-mm surveys?
Scott C. Chapman, Douglas Scott, Geraint F. Lewis +2
The Structure of High Redshift Galactic Halos
Sara L. Ellison, Rodrigo Ibata, Max Pettini +4
Matter in the beam: Weak lensing, substructures and the temperature of dark matter
Hareth S. Mahdi, Pascal J. Elahi, Geraint F. Lewis +1
No Way Back: Maximizing survival time below the Schwarzschild event horizon
Geraint F. Lewis, Juliana Kwan
Stability of Satellite Planes in M31 II: Effects of the Dark Subhalo Population
Nuwanthika Fernando, Veronica Arias, Geraint F. Lewis +2
PAndAS' cubs: discovery of two new dwarf galaxies in the surroundings of the Andromeda and Triangulum galaxies
Nicolas F. Martin, Alan W. McConnachie, Mike Irwin +10
Halo Mass Functions in Early Dark Energy Cosmologies
Matthew J. Francis, Geraint F. Lewis, Eric V. Linder
Investigating dark matter substructure with pulsar timing: II. Improved limits on small-scale cosmology
Hamish A. Clark, Geraint F. Lewis, Pat Scott
Submillimeter Observations of the Ultraluminous BAL Quasar APM 08279+5255
Geraint F. Lewis, Scott C. Chapman, Rodrigo A. Ibata +2
Unearthing Foundations of a Cosmic Cathedral: Searching the Stars for M33's Halo
Robert Cockcroft, Alan W. McConnachie, William E. Harris +9
Investigating dark matter substructure with pulsar timing: I. Constraints on ultracompact minihalos
Hamish A. Clark, Geraint F. Lewis, Pat Scott
Spurious Small-Scale Structure & Discreteness-Driven Relaxation in Cosmological Simulations
Chris Power, Aaron S. G. Robotham, Danail Obreschkow +2
Comparing the observable properties of dwarf galaxies on and off the Andromeda plane
Michelle L. M. Collins, Nicolas F. Martin, R. M. Rich +6
Detecting Dark Matter in High Velocity Clouds
Geraint F. Lewis, Joss Bland-Hawthorn, Brad C. Gibson +1
Reliable mass calculation in spherical gravitating systems
Foivos I. Diakogiannis, Geraint F. Lewis, Rodrigo A. Ibata +3
High-Redshift Gravitationally Lensed Galaxies and Tunable Filter Imaging
Paul C. Hewett, Stephen J. Warren, Jon P. Willis +2
Metal Abundances in the Lyman Alpha Forest
Sara L. Ellison, Geraint F. Lewis, Max Pettini +3
Resolving the Structure at the Heart of BAL Quasars Through Microlensing Induced Polarisation Variability
Christopher A. Hales, Geraint F. Lewis
Considerations on how to investigate planes of satellite galaxies
Marcel S. Pawlowski, Jörg Dabringhausen, Benoit Famaey +11
Matter Matters: Unphysical Properties of the Rh = ct Universe
Geraint F. Lewis
Does the Sagittarius Stream constrain the Milky Way halo to be triaxial?
Rodrigo Ibata, Geraint F. Lewis, Nicolas F. Martin +2
The Need for Speed: Escape velocity and dynamical mass measurements of the Andromeda galaxy
Prajwal R. Kafle, Sanjib Sharma, Geraint F. Lewis +2
KECK HIRES Spectroscopy of APM 08279+5255
Sara L. Ellison, Geraint F. Lewis, Max Pettini +5
The GALAH survey: a catalogue of carbon-enhanced stars and CEMP candidates
Klemen Äotar, Tomaž Zwitter, Janez Kos +19
Warm Dark Haloes Accretion Histories and their Gravitational Signatures
Pascal J. Elahi, Hareth S. Mahdi, Chris Power +1
Producing the Deuteron in Stars: Anthropic Limits on Fundamental Constants
Luke A. Barnes, Geraint F. Lewis
Probing the Atmospheres of Planets Orbiting Microlensed Stars via Polarization Variability
Geraint F. Lewis, Rodrigo A. Ibata
The large-scale structure of the halo of the Andromeda Galaxy Part I: global stellar density, morphology and metallicity properties
Rodrigo A. Ibata, Geraint F. Lewis, Alan W. McConnachie +14
Joining the Hubble Flow: Implications for Expanding Space
Luke A. Barnes, Matthew J. Francis, J. Berian James +1
A thousand shadows of Andromeda: rotating planes of satellites in the Millennium-II cosmological simulation
Rodrigo A. Ibata, Neil G. Ibata, Geraint F. Lewis +5
The GALAH survey: Co-orbiting stars and chemical tagging
Jeffrey D. Simpson, Sarah L. Martell, Gary Da Costa +24
Seeing Star Formation Regions with Gravitational Microlensing
Rodrigo Gil-Merino, Geraint F. Lewis
Trans-Dimensional Bayesian Inference for Gravitational Lens Substructures
Brendon J. Brewer, David Huijser, Geraint F. Lewis
On the Shoulders of Giants: Properties of the Stellar Halo and the Milky Way Mass Distribution
Prajwal R. Kafle, Sanjib Sharma, Geraint F. Lewis +1
Expanding Space: the Root of all Evil?
Matthew J. Francis, Luke A. Barnes, J. Berian James +1
Stochastic Star Formation & Feedback: Mapping Low-Mass Galaxies to Dark Matter Haloes
Chris Power, Graham A. Wynn, Aaron S. G. Robotham +2
Microlensing in phase space I: Continuous propagation of variability moments
Artem V. Tuntsov, Geraint F. Lewis
The GALAH Survey: Verifying abundance trends in the open cluster M67 using non-LTE spectroscopy
Xudong Gao, Karin Lind, Anish M. Amarsi +28
Halo globular clusters observed with AAOmega: dark matter content, metallicity and tidal heating
Richard R. Lane, László L. Kiss, Geraint F. Lewis +6
Weighing a galaxy bar in the lens Q2237+0305
Robert Schmidt, Rachel L. Webster, Geraint F. Lewis
Hydrodynamical simulations of coupled and uncoupled quintessence models I: Halo properties and the cosmic web
Edoardo Carlesi, Alexander Knebe, Geraint F. Lewis +2
Phantom Energy and the Cosmic Horizon: Rh is still not a horizon!
Geraint F. Lewis
Submillimetre observations of a sample of broad absorption line quasars
Geraint F. Lewis, Scott C. Chapman, Zdenka Kuncic
The PAndAS Field of Streams: stellar structures in the Milky Way halo toward Andromeda and Triangulum
Nicolas F. Martin, Rodrigo A. Ibata, R. Michael Rich +16
Internal Alignment of the Halos of Disk Galaxies in Cosmological Hydrodynamic Simulations
Jeremy Bailin, Daisuke Kawata, Brad K. Gibson +8
Feeling the pull, a study of natural Galactic accelerometers. I: photometry of the delicate stellar stream of the Palomar 5 globular cluster
Rodrigo A. Ibata, Geraint F. Lewis, Nicolas F. Martin
A Vast Thin Plane of Co-rotating Dwarf Galaxies Orbiting the Andromeda Galaxy
Rodrigo A. Ibata, Geraint F. Lewis, Anthony R. Conn +13
The large-scale structure of the halo of the Andromeda galaxy II. Hierarchical structure in the Pan-Andromeda Archaeological Survey
Alan W. McConnachie, Rodrigo Ibata, Nicolas Martin +29
A Keck/DEIMOS Kinematic Study of Andromeda IX: dark matter on the smallest galactic scales
Scott C. Chapman, Rodrigo Ibata, Geraint F. Lewis +4
A radial velocity survey of low Galactic latitude structures: II. The Monoceros Ring behind the Canis Major dwarf galaxy
Blair C. Conn, Nicolas F. Martin, Geraint F. Lewis +3
Anisotropy in the Distribution of Satellite Galaxy Orbits
Alexander Knebe, Stuart P. D. Gill, Brad K. Gibson +3
PAndAS' progeny: extending the M31 dwarf galaxy cabal
Jenny C. Richardson, Mike Irwin, Alan W. McConnachie +8
A Molecular Einstein Ring at z=4.12: Imaging the Dynamics of a Quasar Host Galaxy Through a Cosmic Lens
Dominik A. Riechers, Fabian Walter, Brendon J. Brewer +4
Dynamical Modeling of NGC 6809: Selecting the best model using Bayesian Inference
Foivos I. Diakogiannis, Geraint F. Lewis, Rodrigo A. Ibata
Can Early Dark Energy be Detected in Non-Linear Structure?
Matthew J. Francis, Geraint F. Lewis, Eric V. Linder
A computational approach to the twin paradox in curved spacetime
Kenneth K. H. Fung, Hamish A. Clark, Geraint F. Lewis +1
Heating of galactic gas by dark matter annihilation in ultracompact minihalos
Hamish A. Clark, Nikolas Iwanus, Pascal J. Elahi +2
Hydrodynamical simulations of coupled and uncoupled quintessence models II: Galaxy clusters
Edoardo Carlesi, Alexander Knebe, Geraint F. Lewis +1
How does our choice of observable influence our estimation of the centre of a galaxy cluster? Insights from cosmological simulations
Weiguang Cui, Chris Power, Veronica Biffi +6
Interpreting microlensing signal in QSO 2237+0305: Stars or planets?
Rodrigo Gil-Merino, Geraint F. Lewis
Topology of large-scale structure in the 2dF Galaxy Redshift Survey
J. Berian James, Geraint F. Lewis, Matthew Colless
The PAndAS view of the Andromeda satellite system - II. Detailed properties of 23 M31 dwarf spheroidal galaxies
Nicolas F. Martin, Rodrigo A. Ibata, Geraint F. Lewis +15
The cosmic history of the spin of dark matter haloes within the large scale structure
Holly E. Trowland, Geraint F. Lewis, Joss Bland-Hawthorn
The GALAH Survey: Stellar streams and how stellar velocity distributions vary with Galactic longitude, hemisphere and metallicity
Alice C. Quillen, Gayandhi De Silva, Sanjib Sharma +30
Gravitational microlensing of quasar broad line regions at large optical depths
Geraint F. Lewis, Rodrigo A. Ibata
The Star Formation History and Dust Content in the Far Outer Disc of M31
Edouard J. Bernard, Annette M. N. Ferguson, Michael K. Barker +7
The impact of dark energy on galaxy formation. What does the future of our Universe hold?
Jaime Salcido, Richard G. Bower, Luke A. Barnes +6
Galaxy Formation Efficiency and the Multiverse Explanation of the Cosmological Constant with EAGLE Simulations
Luke A. Barnes, Pascal J. Elahi, Jaime Salcido +6
A New Collisional Ring Galaxy at z = 0.111: Auriga's Wheel
Blair C. Conn, Anna Pasquali, Emanuela Pompei +4
The masses of Local Group dwarf spheroidal galaxies: The death of the universal mass profile
Michelle L. M. Collins, Scott C. Chapman, R. M. Rich +12
Testing Newtonian Gravity with AAOmega: Mass-To-Light Profiles and Metallicity Calibrations From 47 Tuc and M55
Richard R. Lane, László L. Kiss, Geraint F. Lewis +4
Resolved nuclear CO(1-0) emission in APM08279+5255: Gravitational lensing by a naked cusp?
Geraint F. Lewis, Chris Carilli, Padeli Papadopoulos +1
The GALAH survey: The data reduction pipeline
Janez Kos, Jane Lin, Tomaž Zwitter +29
The Spatially-Resolved Star Formation History of the M31 Outer Disc
Edouard J. Bernard, Annette M. N. Ferguson, Scott C. Chapman +4
Resolving the mass--anisotropy degeneracy of the spherically symmetric Jeans equation I: theoretical foundation
Foivos I. Diakogiannis, Geraint F. Lewis, Rodrigo A. Ibata
AAOmega Observations of 47 Tucanae: Evidence for a Past Merger?
Richard R. Lane, Brendon J. Brewer, László L. Kiss +6
Unlensing HST Observations of the Einstein Ring 1RXS J1131-1231: A Bayesian Analysis
Brendon J. Brewer, Geraint F. Lewis
Qualitative aspects of quasar microlensing with two mass components: magnification patterns and probability distributions
Paul L. Schechter, Joachim Wambsganss, Geraint F. Lewis
Gravitational microlensing of stars with transiting planets
Geraint F. Lewis
The X-ray Transient 2XMMi J003833.3+402133: A Candidate Magnetar at High Galactic Latitude
Joseph R. Callingham, Sean A. Farrell, Bryan M. Gaensler +2
The Influence of Evolving Dark Energy on Cosmology
Luke Barnes, Matthew J. Francis, Geraint F. Lewis +1
An analytic investigation of the scatter in the integrated X-ray properties of galaxy groups and clusters
Michael L. Balogh, Arif Babul, G. Mark Voit +4
Probing the Nature of the G1 Clump Stellar Overdensity in the Outskirts of M31
Daniel Faria, Rachel A. Johnson, Annette M. N. Ferguson +5
Another coincidence problem for $Î$CDM?
Pim van Oirschot, Juliana Kwan, Geraint F. Lewis
Testing Newtonian Gravity with AAOmega: Mass-to-Light Profiles of Four Globular Clusters
Richard R. Lane, László L. Kiss, Geraint F. Lewis +4
Inferring the Andromeda Galaxy's mass from its giant southern stream with Bayesian simulation sampling
Mark A. Fardal, Martin D. Weinberg, Arif Babul +8
The PAndAS view of the Andromeda satellite system - I. A Bayesian search for dwarf galaxies using spatial and color-magnitude information
Nicolas F. Martin, Rodrigo A. Ibata, Alan W. McConnachie +5
Bell's Spaceships: The Views from Bow and Stern
Geraint F. Lewis, Luke A. Barnes, Martin J. Sticka
Lyman alpha absorbers in motion: consequences of gravitational lensing for the cosmological redshift drift experiment
Madhura Killedar, Geraint F. Lewis
Coordinate Confusion in Conformal Cosmology
Geraint F. Lewis, Matthew J. Francis, Luke A. Barnes +1
SCUBA observations of Hawaii 167
Geraint F. Lewis, Scott C. Chapman
AAT/WFI observations of the Extragalactic H I Cloud HIPASS J1712-64
Geraint F. Lewis, Michael J. Irwin, Rodrigo A. Ibata +1
Understanding the nature of the optically faint radio sources and their connection to the submillimeter population
Scott C. Chapman, Geraint F. Lewis, Douglas Scott +2