Professor Carlos Frenk's Outputs (20)

Can tides explain the low dark matter density in Fornax? (2021)
Journal Article
Genina, A., Read, J. I., Fattahi, A., & Frenk, C. S. (2022). Can tides explain the low dark matter density in Fornax?. Monthly Notices of the Royal Astronomical Society, 510(2), 2186-2205. https://doi.org/10.1093/mnras/stab3526

The low dark matter density in the Fornax dwarf galaxy is often interpreted as being due to the presence of a constant density ‘core’, but it could also be explained by the effects of Galactic tides. The latter interpretation has been disfavoured bec... Read More about Can tides explain the low dark matter density in Fornax?.

Halo concentration strengthens dark matter constraints in galaxy-galaxy strong lensing analyses (2021)
Journal Article
Amorisco, N. C., Nightingale, J., He, Q., Amvrosiadis, A., Cao, X., Cole, S., Etherington, A., Frenk, C. S., Li, R., Massey, R., & Robertson, A. (2022). Halo concentration strengthens dark matter constraints in galaxy-galaxy strong lensing analyses. Monthly Notices of the Royal Astronomical Society, 510, 2464-2479. https://doi.org/10.1093/mnras/stab3527

A defining prediction of the cold dark matter cosmological model is the existence of a very large population of low-mass haloes. This population is absent in models in which the dark matter particle is warm (WDM). These alternatives can, in principle... Read More about Halo concentration strengthens dark matter constraints in galaxy-galaxy strong lensing analyses.

Dwarf stellar haloes: a powerful probe of small-scale galaxy formation and the nature of dark matter (2021)
Journal Article
Deason, A. J., Bose, S., Fattahi, A., Amorisco, N. C., Hellwing, W., & Frenk, C. S. (2022). Dwarf stellar haloes: a powerful probe of small-scale galaxy formation and the nature of dark matter. Monthly Notices of the Royal Astronomical Society, 511(3), 4044-4059. https://doi.org/10.1093/mnras/stab3524

We use N-body cosmological simulations and empirical galaxy models to study the merger history of dwarf-mass galaxies (with Mhalo∼1010M⊙⁠). Our input galaxy models describe the stellar mass–halo mass relation, and the galaxy occupation fraction. The... Read More about Dwarf stellar haloes: a powerful probe of small-scale galaxy formation and the nature of dark matter.

The SIBELIUS Project: E Pluribus Unum (2021)
Journal Article
Sawala, T., McAlpine, S., Jasche, J., Lavaux, G., Jenkins, A., Johansson, P. H., & Frenk, C. S. (2022). The SIBELIUS Project: E Pluribus Unum. Monthly Notices of the Royal Astronomical Society, 509(1), 1432-1446. https://doi.org/10.1093/mnras/stab2684

We introduce ‘Simulations Beyond The Local Universe’ (SIBELIUS) that connect the Local Group (LG) to its cosmic environment. We show that introducing hierarchical small-scale perturbations to a density field constrained on large scales by observation... Read More about The SIBELIUS Project: E Pluribus Unum.

Determining the full satellite population of a Milky Way-mass halo in a highly resolved cosmological hydrodynamic simulation (2021)
Journal Article
Grand, R. J., Marinacci, F., Pakmor, R., Simpson, C. M., Kelly, A. J., Gómez, F. A., Jenkins, A., Springel, V., Frenk, C. S., & White, S. D. (2021). Determining the full satellite population of a Milky Way-mass halo in a highly resolved cosmological hydrodynamic simulation. Geometry & Topology, 507(4), 4953-4967. https://doi.org/10.1093/mnras/stab2492

We investigate the formation of the satellite galaxy population of a Milky Way-mass halo in a very highly resolved magnetohydrodynamic cosmological zoom-in simulation (baryonic mass resolution mb = 800 M⊙⁠). We show that the properties of the central... Read More about Determining the full satellite population of a Milky Way-mass halo in a highly resolved cosmological hydrodynamic simulation.

Constraints on the properties of warm dark matter using the satellite galaxies of the Milky Way (2021)
Journal Article
Newton, O., Leo, M., Cautun, M., Jenkins, A., Frenk, C. S., Lovell, M. R., Helly, J. C., Benson, A. J., & Cole, S. (2021). Constraints on the properties of warm dark matter using the satellite galaxies of the Milky Way. Journal of Cosmology and Astroparticle Physics, 2021(08), Article 062. https://doi.org/10.1088/1475-7516/2021/08/062

The satellite galaxies of the Milky Way (MW) are effective probes of the underlying dark matter (DM) substructure, which is sensitive to the nature of the DM particle. In particular, a class of DM models have a power spectrum cut-off on the mass scal... Read More about Constraints on the properties of warm dark matter using the satellite galaxies of the Milky Way.

The spatial distribution of Milky Way satellites, gaps in streams, and the nature of dark matter (2021)
Journal Article
Lovell, M. R., Cautun, M., Frenk, C. S., Hellwing, W. A., & Newton, O. (2021). The spatial distribution of Milky Way satellites, gaps in streams, and the nature of dark matter. Monthly Notices of the Royal Astronomical Society, 507(4), 4826-4839. https://doi.org/10.1093/mnras/stab2452

The spatial distribution of Milky Way (MW) subhaloes provides an important set of observables for testing cosmological models. These include the radial distribution of luminous satellites, planar configurations, and the abundance of dark subhaloes wh... Read More about The spatial distribution of Milky Way satellites, gaps in streams, and the nature of dark matter.

How well is angular momentum accretion modelled in semi-analytic galaxy formation models? (2021)
Journal Article
Hou, J., Lacey, C. G., & Frenk, C. S. (2021). How well is angular momentum accretion modelled in semi-analytic galaxy formation models?. Monthly Notices of the Royal Astronomical Society, 507(3), 4241-4261. https://doi.org/10.1093/mnras/stab2454

Gas cooling and accretion in haloes delivers mass and angular momentum on to galaxies. In this work, we investigate the accuracy of the modelling of this important process in several different semi-analytic (SA) galaxy formation models (GALFORM, L-GA... Read More about How well is angular momentum accretion modelled in semi-analytic galaxy formation models?.

The survival of globular clusters in a cuspy Fornax (2021)
Journal Article
Shao, S., Cautun, M., Frenk, C. S., Reina-Campos, M., Deason, A. J., Crain, R. A., Kruijssen, J. D., & Pfeffer, J. (2021). The survival of globular clusters in a cuspy Fornax. Monthly Notices of the Royal Astronomical Society, 507(2), 2339-2353. https://doi.org/10.1093/mnras/stab2285

It has long been argued that the globular clusters (GCs) in the Fornax dwarf galaxy indicate that its dark matter halo is likely to have a shallow density profile with a core of size ∼1 kpc. We revisit this argument by investigating analogues of Forn... Read More about The survival of globular clusters in a cuspy Fornax.

An optimal non-linear method for simulating relic neutrinos (2021)
Journal Article
Elbers, W., Frenk, C. S., Jenkins, A., Li, B., & Pascoli, S. (2021). An optimal non-linear method for simulating relic neutrinos. Monthly Notices of the Royal Astronomical Society, 507(2), 2614-2631. https://doi.org/10.1093/mnras/stab2260

Cosmology places the strongest current limits on the sum of neutrino masses. Future observations will further improve the sensitivity and this will require accurate cosmological simulations to quantify possible systematic uncertainties and to make pr... Read More about An optimal non-linear method for simulating relic neutrinos.

Satellites around Milky Way Analogs: Tension in the Number and Fraction of Quiescent Satellites Seen in Observations versus Simulations (2021)
Journal Article
Karunakaran, A., Spekkens, K., Oman, K. A., Simpson, C. M., Fattahi, A., Sand, D. J., Bennet, P., Crnojević, D., Frenk, C. S., Gómez, F. A., Grand, R. J., Jones, M. G., Marinacci, F., Mutlu-Pakdil, B., Navarro, J. F., & Zaritsky, D. (2021). Satellites around Milky Way Analogs: Tension in the Number and Fraction of Quiescent Satellites Seen in Observations versus Simulations. Astrophysical Journal Letters, 916(2), Article L19. https://doi.org/10.3847/2041-8213/ac0e3a

We compare the star-forming properties of satellites around Milky Way (MW) analogs from the Stage II release of the Satellites Around Galactic Analogs Survey (SAGA-ii) to those from the APOSTLE and Auriga cosmological zoom-in simulation suites. We us... Read More about Satellites around Milky Way Analogs: Tension in the Number and Fraction of Quiescent Satellites Seen in Observations versus Simulations.

Joint constraints on thermal relic dark matter from strong gravitational lensing, the Ly α forest, and Milky Way satellites (2021)
Journal Article
Enzi, W., Murgia, R., Newton, O., Vegetti, S., Frenk, C., Viel, M., Cautun, M., Fassnacht, C. D., Auger, M., Despali, G., McKean, J., Koopmans, L. V., & Lovell, M. (2021). Joint constraints on thermal relic dark matter from strong gravitational lensing, the Ly α forest, and Milky Way satellites. Monthly Notices of the Royal Astronomical Society, 506(4), 5848-5862. https://doi.org/10.1093/mnras/stab1960

We derive joint constraints on the warm dark matter (WDM) half-mode scale by combining the analyses of a selection of astrophysical probes: strong gravitational lensing with extended sources, the Ly α forest, and the number of luminous satellites in... Read More about Joint constraints on thermal relic dark matter from strong gravitational lensing, the Ly α forest, and Milky Way satellites.

Smoothed particle radiation hydrodynamics: two-moment method with local Eddington tensor closure (2021)
Journal Article
Chan, T., Theuns, T., Bower, R., & Frenk, C. (2021). Smoothed particle radiation hydrodynamics: two-moment method with local Eddington tensor closure. Monthly Notices of the Royal Astronomical Society, 505(4), 5784-5814. https://doi.org/10.1093/mnras/stab1686

We present a new smoothed particle hydrodynamics-radiative transfer method (SPH-M1RT) that is coupled dynamically with SPH. We implement it in the (task-based parallel) SWIFT galaxy simulation code but it can be straightforwardly implemented in other... Read More about Smoothed particle radiation hydrodynamics: two-moment method with local Eddington tensor closure.

Velocity-dependent J-factors for annihilation radiation from cosmological simulations (2021)
Journal Article
Board, E., Bozorgnia, N., Strigari, L. E., Grand, R. J., Fattahi, A., Frenk, C. S., Marinacci, F., Navarro, J. F., & Oman, K. A. (2021). Velocity-dependent J-factors for annihilation radiation from cosmological simulations. Journal of Cosmology and Astroparticle Physics, 2021(04), Article 070. https://doi.org/10.1088/1475-7516/2021/04/070

We determine the dark matter pair-wise relative velocity distribution in a set of Milky Way-like halos in the Auriga and APOSTLE simulations. Focusing on the smooth halo component, the relative velocity distribution is well-described by a Maxwell-Bol... Read More about Velocity-dependent J-factors for annihilation radiation from cosmological simulations.

PyAutoLens: Open-Source Strong Gravitational Lensing (2021)
Journal Article
Nightingale, J., Hayes, R., Kelly, A., Amvrosiadis, A., Etherington, A., He, Q., Li, N., Cao, X., Frawley, J., Cole, S., Enia, A., Frenk, C., Harvey, D., Li, R., Massey, R., Negrello, M., & Robertson, A. (2021). PyAutoLens: Open-Source Strong Gravitational Lensing. The Journal of Open Source Software, 6(58), Article 2825. https://doi.org/10.21105/joss.02825

Strong gravitational lensing, which can make a background source galaxy appears multiple times due to its light rays being deflected by the mass of one or more foreground lens galaxies, provides astronomers with a powerful tool to study dark matter,... Read More about PyAutoLens: Open-Source Strong Gravitational Lensing.

Cosmic Ballet III: Halo spin evolution in the cosmic web (2021)
Journal Article
Ganeshaiah Veena, P., Cautun, M., van de Weygaert, R., Tempel, E., & Frenk, C. S. (2021). Cosmic Ballet III: Halo spin evolution in the cosmic web. Monthly Notices of the Royal Astronomical Society, 503(2), 2280-2299. https://doi.org/10.1093/mnras/stab411

We explore the evolution of halo spins in the cosmic web using a very large sample of dark matter haloes in the Lambda cold dark matter Planck-Millennium N-body simulation. We use the NEXUS+ multiscale formalism to identify the hierarchy of filaments... Read More about Cosmic Ballet III: Halo spin evolution in the cosmic web.

A Tidally Induced Global Corrugation Pattern in an External Disk Galaxy Similar to the Milky Way (2021)
Journal Article
Gómez, F. A., Torres-Flores, S., Mora-Urrejola, C., Monachesi, A., White, S. D., Maffione, N. P., Grand, R. J., Marinacci, F., Pakmor, R., Springel, V., Frenk, C. S., Amram, P., Epinat, B., & de Oliveira, C. M. (2021). A Tidally Induced Global Corrugation Pattern in an External Disk Galaxy Similar to the Milky Way. Astrophysical Journal, 908(1), Article 27. https://doi.org/10.3847/1538-4357/abcd97

We study the two-dimensional (2D) line-of-sight velocity (Vlos) field of the low-inclination, late-type galaxy VV304a. The resulting 2D kinematic map reveals a global, coherent, and extended perturbation that is likely associated with a recent intera... Read More about A Tidally Induced Global Corrugation Pattern in an External Disk Galaxy Similar to the Milky Way.

The origin of X-ray coronae around simulated disc galaxies (2021)
Journal Article
Kelly, A. J., Jenkins, A., & Frenk, C. S. (2021). The origin of X-ray coronae around simulated disc galaxies. Monthly Notices of the Royal Astronomical Society, 502(2), 2934-2951. https://doi.org/10.1093/mnras/stab255

The existence of hot, accreted gaseous coronae around massive galaxies is a long-standing central prediction of galaxy formation models in the ΛCDM cosmology. While observations now confirm that extraplanar hot gas is present around late-type galaxie... Read More about The origin of X-ray coronae around simulated disc galaxies.

Setting the stage: structures from Gaussian random fields (2021)
Journal Article
Sawala, T., Jenkins, A., McAlpine, S., Jasche, J., Lavaux, G., Johansson, P. H., & Frenk, C. S. (2021). Setting the stage: structures from Gaussian random fields. Monthly Notices of the Royal Astronomical Society, 501(4), 4759-4776. https://doi.org/10.1093/mnras/staa3568

We study structure formation in a set of cosmological simulations to uncover the scales in the initial density field that gave rise to the formation of present-day structures. Our simulations share a common primordial power spectrum (here Λ cold dark... Read More about Setting the stage: structures from Gaussian random fields.

A high-resolution cosmological simulation of a strong gravitational lens (2021)
Journal Article
Richings, J., Frenk, C., Jenkins, A., Robertson, A., & Schaller, M. (2021). A high-resolution cosmological simulation of a strong gravitational lens. Monthly Notices of the Royal Astronomical Society, 501(3), 4657-4668. https://doi.org/10.1093/mnras/staa4013

We present a cosmological hydrodynamical simulation of a 1013 M⊙ galaxy group and its environment (out to 10 times the virial radius) carried out using the EAGLE model of galaxy formation. Exploiting a novel technique to increase the resolution of th... Read More about A high-resolution cosmological simulation of a strong gravitational lens.