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Professor Carlos Frenk's Outputs (558)

The missing dwarf galaxies of the Local Group (2020)
Journal Article
Fattahi, A., Navarro, J. F., & Frenk, C. S. (2020). The missing dwarf galaxies of the Local Group. Monthly Notices of the Royal Astronomical Society, 493(2), 2596-2605. https://doi.org/10.1093/mnras/staa375

We study the Local Group (LG) dwarf galaxy population predicted by the APOSTLE ΛCDM cosmological hydrodynamics simulations. These indicate that: (i) the total mass within 3 Mpc of the Milky Way-Andromeda midpoint (M3Mpc) typically exceeds ∼3 times th... Read More about The missing dwarf galaxies of the Local Group.

Coming of age of the standard model (2020)
Journal Article
Blandford, R., Dunkley, J., Frenk, C., Lahav, O., & Shapley, A. (2020). Coming of age of the standard model. Nature Astronomy, 4, 122-123. https://doi.org/10.1038/s41550-020-1012-8

Cosmology now has a standard model — a remarkably simple description of the Universe, its contents and its history. A symposium held last September in Cambridge, UK, gave this model a ‘health check’ and discussed fascinating questions that lie beyond... Read More about Coming of age of the standard model.

Subhalo destruction in the Apostle and Auriga simulations (2019)
Journal Article
Richings, J., Frenk, C., Jenkins, A., Robertson, A., Fattahi, A., Grand, R. J., Navarro, J., Pakmor, R., Gomez, F. A., Marinacci, F., & Oman, K. (2020). Subhalo destruction in the Apostle and Auriga simulations. Monthly Notices of the Royal Astronomical Society, 492(4), 5780-5793. https://doi.org/10.1093/mnras/stz3448

N-body simulations make unambiguous predictions for the abundance of substructures within dark matter halos. However, the inclusion of baryons in the simulations changes the picture because processes associated with the presence of a large galaxy in... Read More about Subhalo destruction in the Apostle and Auriga simulations.

Cusp or core? Revisiting the globular cluster timing problem in Fornax (2019)
Journal Article
Meadows, N., Navarro, J. F., Santos-Santos, I., Benítez-Llambay, A., & Frenk, C. (2020). Cusp or core? Revisiting the globular cluster timing problem in Fornax. Monthly Notices of the Royal Astronomical Society, 491(3), 3336-3342. https://doi.org/10.1093/mnras/stz3280

We use N-body simulations to revisit the globular cluster (GC) ‘timing problem’ in the Fornax dwarf spheroidal (dSph). In agreement with earlier work, we find that, due to dynamical friction, GCs sink to the centre of dark matter haloes with a cuspy... Read More about Cusp or core? Revisiting the globular cluster timing problem in Fornax.

Ultra-diffuse galaxies in the Auriga simulations (2019)
Journal Article
Liao, S., Gao, L., Frenk, C. S., Grand, R. J., Guo, Q., Gómez, F. A., Marinacci, F., Pakmor, R., Shao, S., & Springel, V. (2019). Ultra-diffuse galaxies in the Auriga simulations. Monthly Notices of the Royal Astronomical Society, 490(4), 5182-5195. https://doi.org/10.1093/mnras/stz2969

We investigate the formation of ultra-diffuse galaxies (UDGs) using the Auriga high-resolution cosmological magneto-hydrodynamical simulations of Milky Way-sized galaxies. We identify a sample of 92 UDGs in the simulations that match a wide range of... Read More about Ultra-diffuse galaxies in the Auriga simulations.

Simulating cosmological substructure in the solar neighbourhood (2019)
Journal Article
Simpson, C. M., Gargiulo, I., Gómez, F. A., Grand, R. J., Maffione, N., Cooper, A. P., Deason, A. J., Frenk, C., Helly, J., Marinacci, F., & Pakmor, R. (2019). Simulating cosmological substructure in the solar neighbourhood. Monthly Notices of the Royal Astronomical Society: Letters, 490(1), L32-L37. https://doi.org/10.1093/mnrasl/slz142

We explore the predictive power of cosmological, hydrodynamical simulations for stellar phase-space substructure and velocity correlations with the AURIGA simulations and AURIGAIA mock Gaia catalogues. We show that at the solar circle the AURIGA simu... Read More about Simulating cosmological substructure in the solar neighbourhood.

The Lyman-α forest as a diagnostic of the nature of the dark matter (2019)
Journal Article
Garzilli, A., Magalich, A., Theuns, T., Frenk, C. S., Weniger, C., Ruchayskiy, O., & Boyarsky, A. (2019). The Lyman-α forest as a diagnostic of the nature of the dark matter. Monthly Notices of the Royal Astronomical Society, 489(3), 3456-3471. https://doi.org/10.1093/mnras/stz2188

The observed Lyman-α flux power spectrum (FPS) is suppressed on scales below ∼ 30 km s−1. This cutoff could be due to the high temperature, T0, and pressure, p0, of the absorbing gas or, alternatively, it could reflect the free streaming of dark matt... Read More about The Lyman-α forest as a diagnostic of the nature of the dark matter.

Baryon-induced dark matter cores in the EAGLE simulations (2019)
Journal Article
Benítez-Llambay, A., Frenk, C. S., Ludlow, A. D., & Navarro, J. F. (2019). Baryon-induced dark matter cores in the EAGLE simulations. Monthly Notices of the Royal Astronomical Society, 488(2), 2387-2404. https://doi.org/10.1093/mnras/stz1890

We examine the formation of dark matter (DM) cores in dwarf galaxies simulated with the EAGLE model of galaxy formation. As in earlier work, we find that the star formation (SF) gas density threshold (ρth) plays a critical role. At low thresholds (LT... Read More about Baryon-induced dark matter cores in the EAGLE simulations.

The distinct stellar metallicity populations of simulated Local Group dwarfs (2019)
Journal Article
Genina, A., Frenk, C. S., Benítez-Llambay, A., Cole, S., Navarro, J. F., Oman, K. A., & Fattahi, A. (2019). The distinct stellar metallicity populations of simulated Local Group dwarfs. Monthly Notices of the Royal Astronomical Society, 488(2), 2312-2331. https://doi.org/10.1093/mnras/stz1852

A number of Local Group dwarf galaxies are known to have two spatially segregated stellar metallicity populations, a centrally concentrated metal-rich population and a more extended metal-poor population. In this work we discuss mechanisms that lead... Read More about The distinct stellar metallicity populations of simulated Local Group dwarfs.

Evolution of galactic planes of satellites in the eagle simulation (2019)
Journal Article
Shao, S., Cautun, M., & Frenk, C. S. (2019). Evolution of galactic planes of satellites in the eagle simulation. Monthly Notices of the Royal Astronomical Society, 488(1), 1166-1179. https://doi.org/10.1093/mnras/stz1741

We study the formation of planes of dwarf galaxies around Milky Way (MW)-mass haloes in the EAGLE galaxy formation simulation. We focus on satellite systems similar to the one in the MW: spatially thin or with a large fraction of members orbiting in... Read More about Evolution of galactic planes of satellites in the eagle simulation.

On the correlation between the local dark matter and stellar velocities (2019)
Journal Article
Bozorgnia, N., Fattahi, A., Cerdeño, D. G., Frenk, C. S., Gómez, F. A., Grand, R. J., Marinacci, F., & Pakmor, R. (2019). On the correlation between the local dark matter and stellar velocities. Journal of Cosmology and Astroparticle Physics, 2019(06), Article 045. https://doi.org/10.1088/1475-7516/2019/06/045

The dark matter velocity distribution in the Solar neighbourhood is an important astrophysical input which enters in the predicted event rate of dark matter direct detection experiments. It has been recently suggested that the local dark matter veloc... Read More about On the correlation between the local dark matter and stellar velocities.

The evolution of the UV-to-mm extragalactic background light: evidence for a top-heavy initial mass function? (2019)
Journal Article
Cowley, W. I., Lacey, C. G., Baugh, C. M., Cole, S., Frenk, C. S., & Lagos, C. D. P. (2019). The evolution of the UV-to-mm extragalactic background light: evidence for a top-heavy initial mass function?. Monthly Notices of the Royal Astronomical Society, 487(3), 3082-3101. https://doi.org/10.1093/mnras/stz1398

We present predictions for the UV-to-mm extragalactic background light (EBL) from a recent version of the GALFORM semi-analytical model of galaxy formation which invokes a top-heavy stellar initial mass function (IMF) for galaxies undergoing dynamica... Read More about The evolution of the UV-to-mm extragalactic background light: evidence for a top-heavy initial mass function?.

The Cosmic Ballet II: spin alignment of galaxies and haloes with large-scale filaments in the EAGLE simulation (2019)
Journal Article
Ganeshaiah Veena, P., Cautun, M., Tempel, E., van de Weygaert, R., & Frenk, C. S. (2019). The Cosmic Ballet II: spin alignment of galaxies and haloes with large-scale filaments in the EAGLE simulation. Monthly Notices of the Royal Astronomical Society, 487(2), 1607-1625. https://doi.org/10.1093/mnras/stz1343

We investigate the alignment of galaxies and haloes relative to cosmic web filaments using the EAGLE hydrodynamical simulation. We identify filaments by applying the nexus+ method to the mass distribution and the Bisous formalism to the galaxy distri... Read More about The Cosmic Ballet II: spin alignment of galaxies and haloes with large-scale filaments in the EAGLE simulation.

No cores in dark matter-dominated dwarf galaxies with bursty star formation histories (2019)
Journal Article
Bose, S., Frenk, C. S., Jenkins, A., Fattahi, A., Gómez, F. A., Grand, R. J., Marinacci, F., Navarro, J. F., Oman, K. A., Pakmor, R., Schaye, J., Simpson, C. M., & Springel, V. (2019). No cores in dark matter-dominated dwarf galaxies with bursty star formation histories. Monthly Notices of the Royal Astronomical Society, 486(4), 4790-4804. https://doi.org/10.1093/mnras/stz1168

Measurements of the rotation curves of dwarf galaxies are often interpreted as requiring a constant density core at the centre, at odds with the “cuspy” inner profiles predicted by N-body simulations of cold dark matter (CDM) haloes. It has been sugg... Read More about No cores in dark matter-dominated dwarf galaxies with bursty star formation histories.

The velocity anisotropy of the Milky Way satellite system (2019)
Journal Article
Riley, A. H., Fattahi, A., Pace, A. B., Strigari, L. E., Frenk, C. S., Gómez, F. A., …White, S. D. (2019). The velocity anisotropy of the Milky Way satellite system. Monthly Notices of the Royal Astronomical Society, 486(2), 2679-2694. https://doi.org/10.1093/mnras/stz973

We analyse the orbital kinematics of the Milky Way (MW) satellite system utilizing the latest systemic proper motions for 38 satellites based on data from Gaia Data Release 2. Combining these data with distance and line-of-sight velocity measurements... Read More about The velocity anisotropy of the Milky Way satellite system.

A comparison between semi-analytical gas cooling models and cosmological hydrodynamical simulations (2019)
Journal Article
Hou, J., Lacey, C. G., & Frenk, C. S. (2019). A comparison between semi-analytical gas cooling models and cosmological hydrodynamical simulations. Monthly Notices of the Royal Astronomical Society, 486(2), 1691-1717. https://doi.org/10.1093/mnras/stz730

We compare the mass cooling rates and cumulative cooled-down masses predicted by several semi-analytical (SA) cooling models with cosmological hydrodynamical simulations performed using the AREPO code (ignoring processes such as feedback and chemical... Read More about A comparison between semi-analytical gas cooling models and cosmological hydrodynamical simulations.

The star formation histories of dwarf galaxies in Local Group cosmological simulations (2019)
Journal Article
Digby, R., Navarro, J. F., Fattahi, A., Simpson, C. M., Oman, K., Gomez, F. A., Frenk, C. S., Grand, R. J., & Pakmor, R. (2019). The star formation histories of dwarf galaxies in Local Group cosmological simulations. Monthly Notices of the Royal Astronomical Society, 485(4), 5423-5437. https://doi.org/10.1093/mnras/stz745

We use the apostle and Auriga cosmological simulations to study the star formation histories (SFHs) of field and satellite dwarf galaxies. Despite sizeable galaxy-to-galaxy scatter, the SFHs of apostle and Auriga dwarfs exhibit robust average trends... Read More about The star formation histories of dwarf galaxies in Local Group cosmological simulations.

The signal of decaying dark matter with hydrodynamical simulations (2019)
Journal Article
Lovell, M. R., Barnes, D., Bahé, Y., Schaye, J., Schaller, M., Theuns, T., Bose, S., Crain, R. A., Vecchia, C. D., Frenk, C. S., Hellwing, W., Kay, S. T., Ludlow, A. D., & Bower, R. G. (2019). The signal of decaying dark matter with hydrodynamical simulations. Monthly Notices of the Royal Astronomical Society, 485(3), 4071-4089. https://doi.org/10.1093/mnras/stz691

Dark matter particles may decay, emitting photons. Drawing on the EAGLE family of hydrodynamic simulations of galaxy formation – including the APOSTLE and C-EAGLE simulations – we assess the systematic uncertainties and scatter on the decay flux from... Read More about The signal of decaying dark matter with hydrodynamical simulations.

The Auriga stellar haloes: connecting stellar population properties with accretion and merging history (2019)
Journal Article
Monachesi, A., Gómez, F. A., Grand, R. J., Simpson, C. M., Kauffmann, G., Bustamante, S., Marinacci, F., Pakmor, R., Springel, V., Frenk, C. S., White, S. D., & Tissera, P. B. (2019). The Auriga stellar haloes: connecting stellar population properties with accretion and merging history. Monthly Notices of the Royal Astronomical Society, 485(2), 2589-2616. https://doi.org/10.1093/mnras/stz538

We examine the stellar haloes of the Auriga simulations, a suite of 30 cosmological magnetohydrodynamical high-resolution simulations of Milky Way-mass galaxies performed with the moving-mesh code arepo. We study halo global properties and radial pro... Read More about The Auriga stellar haloes: connecting stellar population properties with accretion and merging history.