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All Outputs (144)

The MillenniumTNG project: impact of massive neutrinos on the cosmic large-scale structure and the distribution of galaxies (2025)
Journal Article
Hernández-Aguayo, C., Springel, V., Bose, S., Frenk, C., Jenkins, A., Barrera, M., Ferlito, F., Pakmor, R., White, S. D. M., Hernquist, L., Delgado, A. M., Kannan, R., & Hadzhiyska, B. (2025). The MillenniumTNG project: impact of massive neutrinos on the cosmic large-scale structure and the distribution of galaxies. Monthly Notices of the Royal Astronomical Society, 540(4), 3642-3660. https://doi.org/10.1093/mnras/staf864

We discuss the cold dark matter plus massive neutrinos simulations of the MillenniumTNG project, which aim to improve understanding of how well ongoing and future large-scale galaxy surveys will measure neutrino masses. Our largest simulations, on a... Read More about The MillenniumTNG project: impact of massive neutrinos on the cosmic large-scale structure and the distribution of galaxies.

The Manticore Project I: a digital twin of our cosmic neighbourhood from Bayesian field-level analysis (2025)
Journal Article
McAlpine, S., Jasche, J., Ata, M., Lavaux, G., Stiskalek, R., Frenk, C. S., & Jenkins, A. (2025). The Manticore Project I: a digital twin of our cosmic neighbourhood from Bayesian field-level analysis. Monthly Notices of the Royal Astronomical Society, 540(1), 716-745. https://doi.org/10.1093/mnras/staf767

We present the first results from the Manticore Project, dubbed Manticore-Local, a suite of Bayesian constrained simulations of the nearby Universe, generated by fitting a physical structure formation model to the 2M++ galaxy catalogue using the borg... Read More about The Manticore Project I: a digital twin of our cosmic neighbourhood from Bayesian field-level analysis.

cosmICweb: Cosmological Initial Conditions for Zoom-in Simulations in the Cloud (2025)
Journal Article
Buehlmann, M., Winkler, L., Hahn, O., Helly, J. C., & Jenkins, A. (online). cosmICweb: Cosmological Initial Conditions for Zoom-in Simulations in the Cloud. Open Journal of Astrophysics, https://doi.org/10.33232/001c.133696

We present the online service cosmICweb (COSMological Initial Conditions on the WEB)—the first database and web interface to store, analyze, and disseminate initial conditions (ICs) for zoom simulations of objects forming in cosmological simulations:... Read More about cosmICweb: Cosmological Initial Conditions for Zoom-in Simulations in the Cloud.

Negative neutrino masses as a mirage of dark energy (2025)
Journal Article
Elbers, W., Frenk, C. S., Jenkins, A., Li, B., & Pascoli, S. (2025). Negative neutrino masses as a mirage of dark energy. Physical Review D, 111(6), Article 063534. https://doi.org/10.1103/PhysRevD.111.063534

The latest cosmological constraints on the sum of the neutrino masses depend on prior physical assumptions about the mass spectrum. To test the accordance of cosmological and laboratory constraints in the absence of such priors, we introduce an effec... Read More about Negative neutrino masses as a mirage of dark energy.

The emperor’s new arc: gigaparsec patterns abound in a ΛCDM universe (2025)
Journal Article
Sawala, T., Teeriaho, M., Frenk, C. S., Helly, J., Jenkins, A., Racz, G., Schaller, M., & Schaye, J. (2025). The emperor’s new arc: gigaparsec patterns abound in a ΛCDM universe. Monthly Notices of the Royal Astronomical Society: Letters, 541(1), L22-L27. https://doi.org/10.1093/mnrasl/slaf021

Recent discoveries of apparent large-scale features in the structure of the Universe extending over many hundreds of megaparsecs, have been claimed to contradict the large-scale isotropy and homogeneity foundational to the standard (Lambda cold dark... Read More about The emperor’s new arc: gigaparsec patterns abound in a ΛCDM universe.

The FLAMINGO project: the coupling between baryonic feedback and cosmology in light of the S8 tension (2025)
Journal Article
Elbers, W., Frenk, C. S., Jenkins, A., Li, B., Helly, J. C., Kugel, R., Schaller, M., Schaye, J., Braspenning, J., Kwan, J., McCarthy, I. G., Salcido, J., van Daalen, M. P., Vandenbroucke, B., & Pascoli, S. (2025). The FLAMINGO project: the coupling between baryonic feedback and cosmology in light of the S8 tension. Monthly Notices of the Royal Astronomical Society, 537(2), 2160-2178. https://doi.org/10.1093/mnras/staf093

Large-scale structure surveys have reported measurements of the density of matter, Ωm, and the amplitude of clustering, σ8, that are in tension with the values inferred from observations of the cosmic microwave background. While this may be a sign of... Read More about The FLAMINGO project: the coupling between baryonic feedback and cosmology in light of the S8 tension.

Star Stream Velocity Distributions in Cold Dark Matter and Warm Dark Matter Galactic Halos (2024)
Journal Article
Carlberg, R. G., Jenkins, A., Frenk, C. S., & Cooper, A. P. (2024). Star Stream Velocity Distributions in Cold Dark Matter and Warm Dark Matter Galactic Halos. The Astrophysical Journal, 975(1), Article 135. https://doi.org/10.3847/1538-4357/ad7b35

The dark matter subhalos orbiting in a galactic halo perturb the orbits of stars in thin stellar streams. Over time, the random velocities in the streams develop non-Gaussian wings. The rate of velocity increase is approximately a random walk at a ra... Read More about Star Stream Velocity Distributions in Cold Dark Matter and Warm Dark Matter Galactic Halos.

The mass accretion history of dark matter haloes down to Earth mass (2023)
Journal Article
Liu, Y., Gao, L., Bose, S., Frenk, C. S., Jenkins, A., Springel, V., Wang, J., White, S. D. M., & Zheng, H. (2023). The mass accretion history of dark matter haloes down to Earth mass. Monthly Notices of the Royal Astronomical Society, 527(4), 11740-11750. https://doi.org/10.1093/mnras/stae003

We take advantage of the unprecedented dynamical range provided by the ‘Cosmic-Zoom’ project to study the mass accretion history (MAH) of present-day dark matter haloes o v er the entire mass range present in the Lambda cold dark matter paradigm when... Read More about The mass accretion history of dark matter haloes down to Earth mass.

Where shadows lie: reconstruction of anisotropies in the neutrino sky (2023)
Journal Article
Elbers, W., Frenk, C. S., Jenkins, A., Li, B., Pascoli, S., Jasche, J., …Springel, V. (2023). Where shadows lie: reconstruction of anisotropies in the neutrino sky. Journal of Cosmology and Astroparticle Physics, 2023(10), Article 010. https://doi.org/10.1088/1475-7516/2023/10/010

The Cosmic Neutrino Background (CNB) encodes a wealth of information, but has not yet been observed directly. To determine the prospects of detection and to study its information content, we reconstruct the phase-space distribution of local relic neu... Read More about Where shadows lie: reconstruction of anisotropies in the neutrino sky.

FLAMINGO: calibrating large cosmological hydrodynamical simulations with machine learning. (2023)
Journal Article
Kugel, R., Schaye, J., Schaller, M., Helly, J. C., Braspenning, J., Elbers, W., …Vernon, I. (2023). FLAMINGO: calibrating large cosmological hydrodynamical simulations with machine learning. Monthly Notices of the Royal Astronomical Society, 526(4), 6103-6127. https://doi.org/10.1093/mnras/stad2540

To fully take advantage of the data provided by large-scale structure surveys, we need to quantify the potential impact of baryonic effects, such as feedback from active galactic nuclei (AGN) and star formation, on cosmological observables. In simula... Read More about FLAMINGO: calibrating large cosmological hydrodynamical simulations with machine learning..

The FLAMINGO project: cosmological hydrodynamical simulations for large-scale structure and galaxy cluster surveys (2023)
Journal Article
Schaye, J., Kugel, R., Schaller, M., Helly, . J. C., Braspenning, J., Elbers, W., …Nobels, F. S. J. (2023). The FLAMINGO project: cosmological hydrodynamical simulations for large-scale structure and galaxy cluster surveys. Monthly Notices of the Royal Astronomical Society, 526(4), 4978–5020. https://doi.org/10.1093/mnras/stad2419

We introduce the Virgo Consortium’s FLAMINGO suite of hydrodynamical simulations for cosmology and galaxy cluster physics. To ensure the simulations are sufficiently realistic for studies of large-scale structure, the subgrid prescriptions for stella... Read More about The FLAMINGO project: cosmological hydrodynamical simulations for large-scale structure and galaxy cluster surveys.

The Milky Way’s plane of satellites is consistent with ΛCDM (2022)
Journal Article
Sawala, T., Cautun, M., Frenk, C., Helly, J., Jasche, J., Jenkins, A., Johansson, P. H., Lavaux, G., McAlpine, S., & Schaller, M. (2023). The Milky Way’s plane of satellites is consistent with ΛCDM. Nature Astronomy, 7(4), 481-491. https://doi.org/10.1038/s41550-022-01856-z

The Milky Way is surrounded by 11 ‘classical’ satellite galaxies in a remarkable configuration: a thin plane that is possibly rotationally supported. Such a structure is thought to be highly unlikely to arise in the standard (ΛCDM) cosmological model... Read More about The Milky Way’s plane of satellites is consistent with ΛCDM.

Higher order initial conditions with massive neutrinos (2022)
Journal Article
Elbers, W., Frenk, C. S., Jenkins, A., Li, B., & Pascoli, S. (2022). Higher order initial conditions with massive neutrinos. Monthly Notices of the Royal Astronomical Society, 516(3), https://doi.org/10.1093/mnras/stac2365

The discovery that neutrinos have mass has important consequences for cosmology. The main effect of massive neutrinos is to suppress the growth of cosmic structure on small scales. Such growth can be accurately modelled using cosmological N-body simu... Read More about Higher order initial conditions with massive neutrinos.

SIBELIUS-DARK: a galaxy catalogue of the local volume from a constrained realization simulation (2022)
Journal Article
McAlpine, S., Helly, J. C., Schaller, M., Sawala, T., Lavaux, G., Jasche, J., Frenk, C. S., Jenkins, A., Lucey, J. R., & Johansson, P. H. (2022). SIBELIUS-DARK: a galaxy catalogue of the local volume from a constrained realization simulation. Monthly Notices of the Royal Astronomical Society, 512(4), 5823-5847. https://doi.org/10.1093/mnras/stac295

We present SIBELIUS-DARK, a constrained realization simulation of the local volume to a distance of 200 Mpc from the Milky Way. SIBELIUS-DARK is the first study of the ‘Simulations Beyond The Local Universe’ (SIBELIUS) project, which has the goal of... Read More about SIBELIUS-DARK: a galaxy catalogue of the local volume from a constrained realization simulation.

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.