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A Recent Impact Origin of Saturn’s Rings and Mid-sized Moons (2023)
Journal Article
Teodoro, L. F. A., Kegerreis, J. A., Estrada, P. R., Ćuk, M., Eke, V. R., Cuzzi, J. N., …Sandnes, T. D. (2023). A Recent Impact Origin of Saturn’s Rings and Mid-sized Moons. Astrophysical Journal, 955(2), Article 137. https://doi.org/10.3847/1538-4357/acf4ed

We simulate the collision of precursor icy moons analogous to Dione and Rhea as a possible origin for Saturn's remarkably young rings. Such an event could have been triggered a few hundred million years ago by resonant instabilities in a previous sat... Read More about A Recent Impact Origin of Saturn’s Rings and Mid-sized Moons.

Dealing with density discontinuities in planetary SPH simulations (2022)
Journal Article
Ruiz-Bonilla, S., Borrow, J., Eke, V., Kegerreis, J., Massey, R., Sandnes, T., & Teodoro, L. (2022). Dealing with density discontinuities in planetary SPH simulations. Monthly Notices of the Royal Astronomical Society, 512(3), 4660-4668. https://doi.org/10.1093/mnras/stac857

Density discontinuities cannot be precisely modelled in standard formulations of smoothed particles hydrodynamics (SPH) because the density field is defined smoothly as a kernel-weighted sum of neighbouring particle masses. This is a problem when per... Read More about Dealing with density discontinuities in planetary SPH simulations.

Measurement of the free neutron lifetime using the neutron spectrometer on NASA's Lunar Prospector mission (2021)
Journal Article
Wilson, J. T., Lawrence, D. J., Peplowski, P. N., Eke, V. R., & Kegerreis, J. A. (2021). Measurement of the free neutron lifetime using the neutron spectrometer on NASA's Lunar Prospector mission. Physical Review C, 104(4), Article 045501. https://doi.org/10.1103/physrevc.104.045501

We use data from the Lunar Prospector Neutron Spectrometer to make the second space-based measurement of the free neutron lifetime finding τ n = 887 ± 14 stat + 7 − 3 syst s, which is within 1 σ of the accepted value. This measurement expands the ran... Read More about Measurement of the free neutron lifetime using the neutron spectrometer on NASA's Lunar Prospector mission.

The surprising accuracy of isothermal Jeans modelling of self-interacting dark matter density profiles (2020)
Journal Article
Robertson, A., Massey, R., Eke, V., Schaye, J., & Theuns, T. (2021). The surprising accuracy of isothermal Jeans modelling of self-interacting dark matter density profiles. Monthly Notices of the Royal Astronomical Society, 501(3), 4610-5634. https://doi.org/10.1093/mnras/staa3954

Recent claims of observational evidence for self-interacting dark matter (SIDM) have relied on a semi-analytic method for predicting the density profiles of galaxies and galaxy clusters containing SIDM. We present a thorough description of this metho... Read More about The surprising accuracy of isothermal Jeans modelling of self-interacting dark matter density profiles.

The effect of pre-impact spin on the Moon-forming collision (2020)
Journal Article
Ruiz-Bonilla, S., Eke, V., Kegerreis, J., Massey, R., & Teodoro, L. (2021). The effect of pre-impact spin on the Moon-forming collision. Monthly Notices of the Royal Astronomical Society, 500(3), 2861-2870. https://doi.org/10.1093/mnras/staa3385

We simulate the hypothesized collision between the proto-Earth and a Mars-sized impactor that created the Moon. Among the resulting debris disc in some impacts, we find a self-gravitating clump of material. It is roughly the mass of the Moon, contain... Read More about The effect of pre-impact spin on the Moon-forming collision.

Atmospheric Erosion by Giant Impacts onto Terrestrial Planets: A Scaling Law for any Speed, Angle, Mass, and Density (2020)
Journal Article
Kegerreis, J., Eke, V., Catling, D., Massey, R., Teodoro, L., & Zahnle, K. (2020). Atmospheric Erosion by Giant Impacts onto Terrestrial Planets: A Scaling Law for any Speed, Angle, Mass, and Density. Astrophysical Journal Letters, 901(2), Article L31. https://doi.org/10.3847/2041-8213/abb5fb

We present a new scaling law to predict the loss of atmosphere from planetary collisions for any speed, angle, impactor mass, target mass, and body composition, in the regime of giant impacts onto broadly terrestrial planets with relatively thin atmo... Read More about Atmospheric Erosion by Giant Impacts onto Terrestrial Planets: A Scaling Law for any Speed, Angle, Mass, and Density.

Atmospheric Erosion by Giant Impacts onto Terrestrial Planets (2020)
Journal Article
Kegerreis, J., Eke, V., Massey, R., & Teodoro, L. (2020). Atmospheric Erosion by Giant Impacts onto Terrestrial Planets. Astrophysical Journal, 897(2), Article 161. https://doi.org/10.3847/1538-4357/ab9810

We examine the mechanisms by which the atmosphere can be eroded by giant impacts onto Earth-like planets with thin atmospheres, using 3D smoothed particle hydrodynamics simulations with sufficient resolution to directly model the fate of low-mass atm... Read More about Atmospheric Erosion by Giant Impacts onto Terrestrial Planets.

Space-based measurement of the neutron lifetime using data from the neutron spectrometer on NASA's MESSENGER mission (2020)
Journal Article
Wilson, J. T., Lawrence, D. J., Peplowski, P. N., Eke, V. R., & Kegerreis, J. A. (2020). Space-based measurement of the neutron lifetime using data from the neutron spectrometer on NASA's MESSENGER mission. Physical Review Research, 2(2), Article 023316. https://doi.org/10.1103/physrevresearch.2.023316

We establish the feasibility of measuring the neutron lifetime via an alternative, space-based class of methods, which use neutrons generated by galactic cosmic ray spallation of planets surfaces and atmospheres. Free neutrons decay via the weak inte... Read More about Space-based measurement of the neutron lifetime using data from the neutron spectrometer on NASA's MESSENGER mission.

Understanding the large inferred Einstein radii of observed low-mass galaxy clusters (2020)
Journal Article
Robertson, A., Massey, R., & Eke, V. (2020). Understanding the large inferred Einstein radii of observed low-mass galaxy clusters. Monthly Notices of the Royal Astronomical Society, 494(4), 4706-4712. https://doi.org/10.1093/mnras/staa1076

We assess a claim that observed galaxy clusters with mass ∼1014M⊙ are more centrally concentrated than predicted in lambda cold dark matter (ΛCDM). We generate mock strong gravitational lensing observations, taking the lenses from a cosmological hydr... Read More about Understanding the large inferred Einstein radii of observed low-mass galaxy clusters.

Observable tests of self-interacting dark matter in galaxy clusters: cosmological simulations with SIDM and baryons (2019)
Journal Article
Robertson, A., Harvey, D., Massey, R., Eke, V., McCarthy, I. G., Jauzac, M., …Schaye, J. (2019). Observable tests of self-interacting dark matter in galaxy clusters: cosmological simulations with SIDM and baryons. Monthly Notices of the Royal Astronomical Society, 488(3), 3646-3662. https://doi.org/10.1093/mnras/stz1815

We present BAHAMAS-SIDM, the first large-volume, (400 h−1 Mpc)3, cosmological simulations including both self-interacting dark matter (SIDM) and baryonic physics. These simulations are important for two primary reasons: 1) they include the effects of... Read More about Observable tests of self-interacting dark matter in galaxy clusters: cosmological simulations with SIDM and baryons.

Planetary Giant Impacts: Convergence of High-Resolution Simulations using Efficient Spherical Initial Conditions and SWIFT (2019)
Journal Article
Kegerreis, J., Eke, V., Gonnet, P., Korycansky, D., Massey, R., Schaller, M., & Teodoro, L. (2019). Planetary Giant Impacts: Convergence of High-Resolution Simulations using Efficient Spherical Initial Conditions and SWIFT. Monthly Notices of the Royal Astronomical Society, 487(4), 5029-5040. https://doi.org/10.1093/mnras/stz1606

We perform simulations of giant impacts onto the young Uranus using smoothed particle hydrodynamics (SPH) with over 100 million particles. This 100–1000 × improvement in particle number reveals that simulations with below 107 particles fail to conver... Read More about Planetary Giant Impacts: Convergence of High-Resolution Simulations using Efficient Spherical Initial Conditions and SWIFT.

Grid Mapping the Northern Plains of Mars: Geomorphological, Radar, and Water‐Equivalent Hydrogen Results From Arcadia Plantia (2018)
Journal Article
Ramsdale, J. D., Balme, M. R., Gallagher, C., Conway, S. J., Smith, I. B., Hauber, E., …Wilson, J. T. (2019). Grid Mapping the Northern Plains of Mars: Geomorphological, Radar, and Water‐Equivalent Hydrogen Results From Arcadia Plantia. Journal of Geophysical Research: Planets, 124(2), 504-527. https://doi.org/10.1029/2018je005663

A project of mapping ice‐related landforms was undertaken to understand the role of subsurface ice in the northern plains. This work is the first continuous regional mapping from CTX (ConTeXt Camera, 6 m/pixel; Malin et al., 2007) imagery in Arcadia... Read More about Grid Mapping the Northern Plains of Mars: Geomorphological, Radar, and Water‐Equivalent Hydrogen Results From Arcadia Plantia.

Grid Mapping the Northern Plains of Mars: A New Overview of Recent Water‐ and Ice‐Related Landforms in Acidalia Planitia (2018)
Journal Article
Orgel, C., Hauber, E., Gasselt, S., Reiss, D., Johnsson, A., Ramsdale, J. D., …Teodoro, L. F. (2019). Grid Mapping the Northern Plains of Mars: A New Overview of Recent Water‐ and Ice‐Related Landforms in Acidalia Planitia. Journal of Geophysical Research: Planets, 124(2), 454-482. https://doi.org/10.1029/2018je005664

We used a grid‐mapping technique to analyze the distribution of 13 water‐ and ice‐related landforms in Acidalia Planitia as part of a joint effort to study the three main basins in the northern lowlands of Mars, that is, Acidalia, Utopia, and Arcadia... Read More about Grid Mapping the Northern Plains of Mars: A New Overview of Recent Water‐ and Ice‐Related Landforms in Acidalia Planitia.

Unravelling the mystery of lunar anomalous craters using radar and infrared observations (2018)
Journal Article
Fa, W., & Eke, V. R. (2018). Unravelling the mystery of lunar anomalous craters using radar and infrared observations. Journal of Geophysical Research: Planets, 123(8), 2119-2137. https://doi.org/10.1029/2018je005668

In Miniature Radio Frequency (Mini‐RF) radar images, anomalous craters are those having a high circular polarization ratio (CPR) in their interior but not exterior to their rims. Previous studies found that most CPR‐anomalous craters contain permanen... Read More about Unravelling the mystery of lunar anomalous craters using radar and infrared observations.

Image Reconstruction Techniques in Neutron and Gamma-Ray Spectroscopy: Improving Lunar Prospector Data (2018)
Journal Article
Wilson, J., Lawrence, D., Peplowski, P., Cahill, J., Eke, V., Massey, R., & Teodoro, L. (2018). Image Reconstruction Techniques in Neutron and Gamma-Ray Spectroscopy: Improving Lunar Prospector Data. Journal of Geophysical Research: Planets, 123(7), 1804-1822. https://doi.org/10.1029/2018je005589

We present improved resolution maps of the Lunar Prospector Neutron Spectrometer thermal, epithermal, and fast neutron data and gamma ray spectrometer Th‐line fluxes via global application of pixon image reconstruction techniques. With the use of moc... Read More about Image Reconstruction Techniques in Neutron and Gamma-Ray Spectroscopy: Improving Lunar Prospector Data.

Consequences of Giant Impacts on Early Uranus for Rotation, Internal Structure, Debris, and Atmospheric Erosion (2018)
Journal Article
Kegerreis, J., Teodoro, L., Eke, V., Massey, R., Catling, D., Fryer, C., …Zahnle, K. (2018). Consequences of Giant Impacts on Early Uranus for Rotation, Internal Structure, Debris, and Atmospheric Erosion. Astrophysical Journal, 861(1), Article 52. https://doi.org/10.3847/1538-4357/aac725

We perform a suite of smoothed particle hydrodynamics simulations to investigate in detail the results of a giant impact on the young Uranus. We study the internal structure, rotation rate, and atmospheric retention of the post-impact planet, as well... Read More about Consequences of Giant Impacts on Early Uranus for Rotation, Internal Structure, Debris, and Atmospheric Erosion.

The diverse density profiles of galaxy clusters with self-interacting dark matter plus baryons (2018)
Journal Article
Robertson, A., Massey, R., Eke, V., Tulin, S., Yu, H., Bahé, Y., …Schaye, J. (2018). The diverse density profiles of galaxy clusters with self-interacting dark matter plus baryons. Monthly Notices of the Royal Astronomical Society: Letters, 476(1), L20-L24. https://doi.org/10.1093/mnrasl/sly024

We present the first simulated galaxy clusters (M200 > 1014 M⊙) with both self-interacting dark matter (SIDM) and baryonic physics. They exhibit a greater diversity in both dark matter and stellar density profiles than their counterparts in simulatio... Read More about The diverse density profiles of galaxy clusters with self-interacting dark matter plus baryons.

Evidence for a Localized Source of the Argon in the Lunar Exosphere (2017)
Journal Article
Kegerreis, J. A., Eke, V. R., Massey, R. J., Beaumont, S. K., Elphic, R. C., & Teodoro, L. F. (2017). Evidence for a Localized Source of the Argon in the Lunar Exosphere. Journal of Geophysical Research: Planets, 122(10), 2163-2181. https://doi.org/10.1002/2017je005352

We perform the first tests of various proposed explanations for observed features of the Moon's argon exosphere, including models of the following: spatially varying surface interactions; a source that reflects the lunar near-surface potassium distri... Read More about Evidence for a Localized Source of the Argon in the Lunar Exosphere.

Equatorial locations of water on Mars: Improved resolution maps based on Mars Odyssey Neutron Spectrometer data (2017)
Journal Article
Wilson, J. T., Eke, V. R., Massey, R. J., Elphic, R. C., Feldman, W. C., Maurice, S., & Teodoro, L. F. (2018). Equatorial locations of water on Mars: Improved resolution maps based on Mars Odyssey Neutron Spectrometer data. Icarus, 299, 148-160. https://doi.org/10.1016/j.icarus.2017.07.028

We present a map of the near subsurface hydrogen distribution on Mars, based on epithermal neutron data from the Mars Odyssey Neutron Spectrometer. The map’s spatial resolution is approximately improved two-fold via a new form of the pixon image reco... Read More about Equatorial locations of water on Mars: Improved resolution maps based on Mars Odyssey Neutron Spectrometer data.

Knowing the unknowns: uncertainties in simple estimators of galactic dynamical masses (2017)
Journal Article
Campbell, D. J., Frenk, C. S., Jenkins, A., Eke, V. R., Navarro, J. F., Sawala, T., …Theuns, T. (2017). Knowing the unknowns: uncertainties in simple estimators of galactic dynamical masses. Monthly Notices of the Royal Astronomical Society, 469(2), 2335-2360. https://doi.org/10.1093/mnras/stx975

The observed stellar kinematics of dispersion-supported galaxies are often used to measure dynamical masses. Recently, several analytical relationships between the stellar line-of-sight velocity dispersion, the projected (2D) or deprojected (3D) half... Read More about Knowing the unknowns: uncertainties in simple estimators of galactic dynamical masses.

Cosmic particle colliders: simulations of self-interacting dark matter with anisotropic scattering (2017)
Journal Article
Robertson, A., Massey, R., & Eke, V. (2017). Cosmic particle colliders: simulations of self-interacting dark matter with anisotropic scattering. Monthly Notices of the Royal Astronomical Society, 467(4), 4719-4730. https://doi.org/10.1093/mnras/stx463

We investigate how self-interacting dark matter (SIDM) with anisotropic scattering affects the evolution of isolated dark matter haloes as well as systems with two colliding haloes. For isolated haloes, we find that the evolution can be adequately ca... Read More about Cosmic particle colliders: simulations of self-interacting dark matter with anisotropic scattering.

How thick are Mercury's polar water ice deposits? (2016)
Journal Article
Eke, V. R., Lawrence, D. J., & Teodoro, L. F. (2017). How thick are Mercury's polar water ice deposits?. Icarus, 284, 407-415. https://doi.org/10.1016/j.icarus.2016.12.001

An estimate is made of the thickness of the radar-bright deposits in craters near to Mercury’s north pole. To construct an objective set of craters for this measurement, an automated crater finding algorithm is developed and applied to a digital elev... Read More about How thick are Mercury's polar water ice deposits?.

What does the Bullet Cluster tell us about self-interacting dark matter? (2016)
Journal Article
Robertson, A., Massey, R., & Eke, V. (2017). What does the Bullet Cluster tell us about self-interacting dark matter?. Monthly Notices of the Royal Astronomical Society, 465(1), 569-587. https://doi.org/10.1093/mnras/stw2670

We perform numerical simulations of the merging galaxy cluster 1E 0657−56 (the Bullet Cluster), including the effects of elastic dark matter scattering. In a similar manner to the stripping of gas by ram pressure, dark matter self-interactions would... Read More about What does the Bullet Cluster tell us about self-interacting dark matter?.

Self-interacting dark matter scattering rates through cosmic time (2015)
Journal Article
Robertson, A., Massey, R., Eke, V., & Bower, R. (2015). Self-interacting dark matter scattering rates through cosmic time. Monthly Notices of the Royal Astronomical Society, 453(3), 2267-2276. https://doi.org/10.1093/mnras/stv1805

We estimate the rate of dark matter scattering in collapsed structures throughout the history of the Universe. If the scattering cross-section is velocity independent, then the canonical picture is correct that scatterings occur mainly at late times.... Read More about Self-interacting dark matter scattering rates through cosmic time.

The offsets between galaxies and their dark matter in Λ cold dark matter (2015)
Journal Article
Schaller, M., Robertson, A., Massey, R., Bower, R. G., & Eke, V. R. (2015). The offsets between galaxies and their dark matter in Λ cold dark matter. Monthly Notices of the Royal Astronomical Society: Letters, 453(1), L58-L62. https://doi.org/10.1093/mnrasl/slv104

We use the ‘Evolution and Assembly of GaLaxies and their Environments’ (EAGLE) suite of hydrodynamical cosmological simulations to measure offsets between the centres of stellar and dark matter components of galaxies. We find that the vast majority (... Read More about The offsets between galaxies and their dark matter in Λ cold dark matter.

The effect of craters on the lunar neutron flux (2015)
Journal Article
Eke, V., Bower, K., Diserens, S., Ryder, M., Yeomans, P., Teodoro, L., …Lawrence, D. (2015). The effect of craters on the lunar neutron flux. Journal of Geophysical Research: Planets, 120(8), 1377-1395. https://doi.org/10.1002/2015je004856

The variation of remotely sensed neutron count rates is measured as a function of cratercentric distance using data from the Lunar Prospector Neutron Spectrometer. The count rate, stacked over many craters, peaks over the crater center, has a minimum... Read More about The effect of craters on the lunar neutron flux.

Evidence for explosive silicic volcanism on the Moon from the extended distribution of thorium near the Compton-Belkovich Volcanic Complex (2014)
Journal Article
Wilson, J., Eke, V., Massey, R., Elphic, R., Jolliff, B., Lawrence, D., …Teodoro, L. (2015). Evidence for explosive silicic volcanism on the Moon from the extended distribution of thorium near the Compton-Belkovich Volcanic Complex. Journal of Geophysical Research: Planets, 120(1), 92-108. https://doi.org/10.1002/2014je004719

We reconstruct the abundance of thorium near the Compton-Belkovich Volcanic Complex on the Moon, using data from the Lunar Prospector Gamma Ray Spectrometer. We enhance the resolution via a pixon image reconstruction technique and find that the thori... Read More about Evidence for explosive silicic volcanism on the Moon from the extended distribution of thorium near the Compton-Belkovich Volcanic Complex.

Galaxy And Mass Assembly (GAMA): the halo mass of galaxy groups from maximum-likelihood weak lensing (2014)
Journal Article
Han, J., Eke, V., Frenk, C., Mandelbaum, R., Norberg, P., Schneider, M., …Robotham, A. (2015). Galaxy And Mass Assembly (GAMA): the halo mass of galaxy groups from maximum-likelihood weak lensing. Monthly Notices of the Royal Astronomical Society, 446(2), 1356-1379. https://doi.org/10.1093/mnras/stu2178

We present a maximum-likelihood weak-lensing analysis of the mass distribution in optically selected spectroscopic Galaxy Groups (G3Cv5) in the Galaxy And Mass Assembly (GAMA) survey, using background Sloan Digital Sky Survey (SDSS) photometric galax... Read More about Galaxy And Mass Assembly (GAMA): the halo mass of galaxy groups from maximum-likelihood weak lensing.

Lunar polar craters - icy, rough or just sloping? (2014)
Journal Article
Eke, V., Bartram, S., Lane, D., Smith, D., & Teodoro, L. (2014). Lunar polar craters - icy, rough or just sloping?. Icarus, 241, 66-78. https://doi.org/10.1016/j.icarus.2014.06.021

Circular Polarisation Ratio (CPR) mosaics from Mini-SAR on Chandrayaan-1 and Mini-RF on LRO are used to study craters near to the lunar north pole. The look direction of the detectors strongly affects the appearance of the crater CPR maps. Rectifying... Read More about Lunar polar craters - icy, rough or just sloping?.

The properties of warm dark matter haloes (2014)
Journal Article
Lovell, M. R., Frenk, C. S., Eke, V. R., Jenkins, A., Gao, L., & Theuns, T. (2014). The properties of warm dark matter haloes. Monthly Notices of the Royal Astronomical Society, 439(1), 300-317. https://doi.org/10.1093/mnras/stt2431

Well-motivated elementary particle candidates for the dark matter, such as the sterile neutrino, behave as warm dark matter (WDM). For particle masses of the order of a keV, free streaming produces a cutoff in the linear fluctuation power spectrum at... Read More about The properties of warm dark matter haloes.

How well do we know the polar hydrogen distribution on the Moon? (2013)
Journal Article
Teodoro, L., Eke, V., Elphic, R., Feldman, W., & Lawrence, D. (2014). How well do we know the polar hydrogen distribution on the Moon?. Journal of Geophysical Research: Planets, 119(3), 574-593. https://doi.org/10.1002/2013je004421

A detailed comparison is made of results from the Lunar Prospector Neutron Spectrometer (LPNS) and the Lunar Exploration Neutron Detector Collimated Sensors for Epithermal Neutrons (LEND CSETN). Using the autocorrelation function and power spectrum o... Read More about How well do we know the polar hydrogen distribution on the Moon?.

Spatial and luminosity distributions of galactic satellites (2013)
Journal Article
Guo, Q., Cole, S., Eke, V., Frenk, C., & Helly, J. (2013). Spatial and luminosity distributions of galactic satellites. Monthly Notices of the Royal Astronomical Society, 434(3), 1838-1848. https://doi.org/10.1093/mnras/stt903

We investigate the luminosity functions and projected number density profiles of galactic satellites around isolated primaries of different luminosity. We measure these quantities for model satellites placed into the Millennium and Millennium II dark... Read More about Spatial and luminosity distributions of galactic satellites.

Constraining extended gamma-ray emission from galaxy clusters (2012)
Journal Article
Han, J., Frenk, C., Eke, V., Gao, L., White, S., Boyarsky, A., …Ruchayskiy, O. (2012). Constraining extended gamma-ray emission from galaxy clusters. Monthly Notices of the Royal Astronomical Society, 427(2), 1651-1665. https://doi.org/10.1111/j.1365-2966.2012.22080.x

Cold dark matter models predict the existence of a large number of substructures within dark matter haloes. If the cold dark matter consists of weakly interacting massive particles, their annihilation within these substructures could lead to diffuse... Read More about Constraining extended gamma-ray emission from galaxy clusters.

Satellite galaxy number density profiles in the Sloan Digital Sky Survey (2012)
Journal Article
Guo, Q., Cole, S., Eke, V., & Frenk, C. (2012). Satellite galaxy number density profiles in the Sloan Digital Sky Survey. Monthly Notices of the Royal Astronomical Society, 427(1), 428-441. https://doi.org/10.1111/j.1365-2966.2012.21882.x

We study the spatial distribution of satellite galaxies around isolated primaries using the Sloan Digital Sky Survey (SDSS) spectroscopic and photometric galaxy catalogues. We select isolated primaries from the spectroscopic sample and search for pot... Read More about Satellite galaxy number density profiles in the Sloan Digital Sky Survey.

The haloes of bright satellite galaxies in a warm dark matter universe (2012)
Journal Article
Lovell, M., Eke, V., Frenk, C., Gao, L., Jenkins, A., Theuns, T., …Ruchayskiy, O. (2012). The haloes of bright satellite galaxies in a warm dark matter universe. Monthly Notices of the Royal Astronomical Society, 420(3), 2318-2324. https://doi.org/10.1111/j.1365-2966.2011.20200.x

High-resolution N-body simulations of galactic cold dark matter haloes indicate that we should expect to find a few satellite galaxies around the Milky Way whose haloes have a maximum circular velocity in excess of 40 km s−1. Yet, with the exception... Read More about The haloes of bright satellite galaxies in a warm dark matter universe.

The baryons in the Milky Way satellites (2012)
Journal Article
Parry, O., Eke, V., Frenk, C., & Okamoto, T. (2012). The baryons in the Milky Way satellites. Monthly Notices of the Royal Astronomical Society, 419(4), 3304-3318. https://doi.org/10.1111/j.1365-2966.2011.19971.x

We investigate the formation and evolution of satellite galaxies using smoothed particle hydrodynamics (SPH) simulations of a Milky Way (MW) like system, focusing on the best resolved examples, analogous to the classical MW satellites. Comparing with... Read More about The baryons in the Milky Way satellites.

A halo expansion technique for approximating simulated dark matter haloes (2011)
Journal Article
Lowing, B., Jenkins, A., Eke, V., & Frenk, C. (2011). A halo expansion technique for approximating simulated dark matter haloes. Monthly Notices of the Royal Astronomical Society, 416(4), 2697-2711. https://doi.org/10.1111/j.1365-2966.2011.19222.x

We apply a basis function expansion method to create a time-evolving density/potential approximation of the late growth of simulated N-body dark matter haloes. We demonstrate how the potential of a halo from the Aquarius Project can be accurately rep... Read More about A halo expansion technique for approximating simulated dark matter haloes.

The link between galactic satellite orbits and subhalo accretion. (2011)
Journal Article
Lovell, M., Eke, V., Frenk, C., & Jenkins, A. (2011). The link between galactic satellite orbits and subhalo accretion. Monthly Notices of the Royal Astronomical Society, 413(4), 3013-3021. https://doi.org/10.1111/j.1365-2966.2011.18377.x

We calculate the orbital angular momentum of dark matter subhaloes in the Aquarius simulations of cold dark matter (CDM) galactic haloes. We calculate the orientation of their angular momentum relative to that of the spin vector of their host halo an... Read More about The link between galactic satellite orbits and subhalo accretion..

Effects of feedback on the morphology of galaxy discs (2005)
Journal Article
Okamoto, T., Eke, V., Frenk, C., & Jenkins, A. (2005). Effects of feedback on the morphology of galaxy discs. Monthly Notices of the Royal Astronomical Society, 363(4), 1299-1314. https://doi.org/10.1111/j.1365-2966.2005.09525.x

We have performed hydrodynamic simulations of galaxy formation in a cold dark matter (ΛCDM) universe. We have followed galaxy formation in a dark matter halo, chosen to have a relatively quiet recent merger history, using different models for star fo... Read More about Effects of feedback on the morphology of galaxy discs.

The 2dF Galaxy Redshift Survey: power-spectrum analysis of the final data set and cosmological implications (2005)
Journal Article
Cole, S., Percival, W., Peacock, J., Norberg, P., Baugh, C., Frenk, C., …Taylor, K. (2005). The 2dF Galaxy Redshift Survey: power-spectrum analysis of the final data set and cosmological implications. Monthly Notices of the Royal Astronomical Society, 362(2), 505-534. https://doi.org/10.1111/j.1365-2966.2005.09318.x

We present a power-spectrum analysis of the final 2dF Galaxy Redshift Survey (2dFGRS), employing a direct Fourier method. The sample used comprises 221 414 galaxies with measured redshifts. We investigate in detail the modelling of the sample selecti... Read More about The 2dF Galaxy Redshift Survey: power-spectrum analysis of the final data set and cosmological implications.

Galaxy groups at 0.3 ⩽ z ⩽ 0.55 - II. Evolution to z ∼ 0. (2005)
Journal Article
Wilman, D., Balogh, M., Bower, R., Mulchaey, J., Oemler, A., Carlberg, R., …Whitaker, R. (2005). Galaxy groups at 0.3 ⩽ z ⩽ 0.55 - II. Evolution to z ∼ 0. Monthly Notices of the Royal Astronomical Society, 358(1), 88-100. https://doi.org/10.1111/j.1365-2966.2005.08745.x

We compare deep Magellan spectroscopy of 26 groups at 0.3 ≤z≤ 0.55, selected from the Canadian Network for Observational Cosmology 2 field survey, with a large sample of nearby groups from the 2PIGG catalogue. We find that the fraction of group galax... Read More about Galaxy groups at 0.3 ⩽ z ⩽ 0.55 - II. Evolution to z ∼ 0..

Galaxy groups in the two-degree field Galaxy Redshift Survey: the luminous content of the groups (2004)
Journal Article
Eke, V., Frenk, C., Baugh, C., Cole, S., Norberg, P., Peacock, J., …Taylor, K. (2004). Galaxy groups in the two-degree field Galaxy Redshift Survey: the luminous content of the groups. Monthly Notices of the Royal Astronomical Society, 355(3), 769-784. https://doi.org/10.1111/j.1365-2966.2004.08354.x

The Two-degree Field Galaxy Redshift Survey (2dFGRS) Percolation-Inferred Galaxy Group (2PIGG) catalogue of 29 000 objects is used to study the luminous content of galaxy systems of various sizes. Mock galaxy catalogues constructed from cosmological... Read More about Galaxy groups in the two-degree field Galaxy Redshift Survey: the luminous content of the groups.

The 2dF Galaxy Redshift Survey: the clustering of galaxy groups (2004)
Journal Article
Padilla, N., Baugh, C., Eke, V., Norberg, P., Cole, S., Frenk, C., …Taylor, K. (2004). The 2dF Galaxy Redshift Survey: the clustering of galaxy groups. Monthly Notices of the Royal Astronomical Society, 352(1), 211-225. https://doi.org/10.1111/j.1365-2966.2004.07911.x

We measure the clustering of galaxy groups in the 2dFGRS Percolation-Inferred Galaxy Group (2PIGG) catalogue. The 2PIGG sample has 28 877 groups with at least two members. The clustering amplitude of the full 2PIGG catalogue is weaker than that of 2d... Read More about The 2dF Galaxy Redshift Survey: the clustering of galaxy groups.

Galaxy ecology: groups and low-density environments in the SDSS and 2dFGRS (2004)
Journal Article
Baugh, C., Bower, R., Cole, S., Eke, V., Baldry, I., Balogh, M., …Taylor, K. (2004). Galaxy ecology: groups and low-density environments in the SDSS and 2dFGRS. Monthly Notices of the Royal Astronomical Society, 348(4), 1355-1372. https://doi.org/10.1111/j.1365-2966.2004.07453.x

We analyse the observed correlation between galaxy environment and Hα emission-line strength, using volume-limited samples and group catalogues of 24 968 galaxies at 0.05

Galaxy groups in the 2dFGRS: the group-finding algorithm and the 2PIGG catalogue (2004)
Journal Article
Eke, V., Baugh, C., Cole, S., Frenk, C., Norberg, P., Peacock, J., …Sutherland, W. (2004). Galaxy groups in the 2dFGRS: the group-finding algorithm and the 2PIGG catalogue. Monthly Notices of the Royal Astronomical Society, 348(3), 866-878. https://doi.org/10.1111/j.1365-2966.2004.07408.x

The construction of a catalogue of galaxy groups from the Two-degree Field Galaxy Redshift Survey (2dFGRS) is described. Groups are identified by means of a friends-of-friends percolation algorithm which has been thoroughly tested on mock versions of... Read More about Galaxy groups in the 2dFGRS: the group-finding algorithm and the 2PIGG catalogue.

Simulations of galaxy formation in a Λ cold dark matter universe. I. Dynamical and photometric properties of a simulated disk galaxy (2003)
Journal Article
Abadi, M., Navarro, J., Steinmetz, M., & Eke, V. (2003). Simulations of galaxy formation in a Λ cold dark matter universe. I. Dynamical and photometric properties of a simulated disk galaxy. Astrophysical Journal, 591(2), 499-514. https://doi.org/10.1086/375512

We present a detailed analysis of the dynamical and photometric properties of a disk galaxy simulated in the cold dark matter (CDM) cosmogony. The galaxy is assembled through a number of high-redshift mergers followed by a period of quiescent accreti... Read More about Simulations of galaxy formation in a Λ cold dark matter universe. I. Dynamical and photometric properties of a simulated disk galaxy.

Measuring σ₈ with Cluster Lensing: Biases from Unrelaxed Clusters. (2003)
Journal Article
Smith, G. P., Edge, A. C., Eke, V. R., Nichol, R. C., Smail, I., & Kneib, J. (2003). Measuring σ₈ with Cluster Lensing: Biases from Unrelaxed Clusters. Astrophysical Journal, 590(2), L79-L82. https://doi.org/10.1086/376747

We use gravitational lens models and X-ray spectral analysis of 10 X-ray-luminous galaxy clusters at z sime 0.2 to study the impact of cluster substructure on attempts to normalize the matter power spectrum. We estimate that unrelaxed clusters are 30... Read More about Measuring σ₈ with Cluster Lensing: Biases from Unrelaxed Clusters..

The power spectrum dependence of dark matter halo concentrations (2001)
Journal Article
Eke, V., Navarro, J., & Steinmetz, M. (2001). The power spectrum dependence of dark matter halo concentrations. Astrophysical Journal, 554(1), 114-125. https://doi.org/10.1086/321345

High-resolution N-body simulations are used to examine the power spectrum dependence of the concentration of galaxy-sized dark matter halos. It is found that dark halo concentrations depend on the amplitude of mass fluctuations as well as on the rati... Read More about The power spectrum dependence of dark matter halo concentrations.

The cores of dwarf galaxy haloes (1996)
Journal Article
Navarro, J., Eke, V., & Frenk, C. (1996). The cores of dwarf galaxy haloes. Monthly Notices of the Royal Astronomical Society, 283(3), L72-L78

Cluster evolution as a diagnostic for Omega (1996)
Journal Article
Eke, V., Cole, S., & Frenk, C. (1996). Cluster evolution as a diagnostic for Omega. Monthly Notices of the Royal Astronomical Society, 282(1), 263-280