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Cusp or core? Revisiting the globular cluster timing problem in Fornax
Noah Meadows, Julio F. Navarro, Isabel Santos-Santos +2
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 dynami…
Universal structure of dark matter haloes over a mass range of 20 orders of magnitude
Jie Wang, Sownak Bose, Carlos S. Frenk +4
Cosmological models in which dark matter consists of cold elementary particles predict that the dark halo population should extend to masses many orders of magnitude below those at…
To beta or not to beta: can higher-order Jeans analysis break the mass-anisotropy degeneracy in simulated dwarfs?
Anna Genina, Justin I. Read, Carlos S. Frenk +6
We test a non-parametric higher-order Jeans analysis method, GravSphere, on 32 simulated dwarf galaxies comparable to classical Local Group dwarfs like Fornax. The galaxies are sel…
Baryonic clues to the puzzling diversity of dwarf galaxy rotation curves
Isabel M. E. Santos-Santos, Julio F. Navarro, Andrew Robertson +7
We use a compilation of disc galaxy rotation curves to assess the role of the luminous component ("baryons") in the rotation curve diversity problem. As in earlier work, we find th…
The Milky Way total mass profile as inferred from Gaia DR2
Marius Cautun, Alejandro Benitez-Llambay, Alis J. Deason +7
We determine the Milky Way (MW) mass profile inferred from fitting physically motivated models to the Gaia DR2 Galactic rotation curve and other data. Using various hydrodynamical…
The dark matter component of the Gaia radially anisotropic substructure
Nassim Bozorgnia, Azadeh Fattahi, Carlos S. Frenk +5
We study the properties of the dark matter component of the radially anisotropic stellar population recently identified in the Gaia data, using magneto-hydrodynamical simulations o…
The little things matter: relating the abundance of ultrafaint satellites to the hosts' assembly history
Sownak Bose, Alis J. Deason, Vasily Belokurov +1
Ultrafaint dwarf galaxies () are relics of an early phase of galaxy formation. They contain some of the oldest and most metal-poor stars in…
Dark matter haloes and subhaloes
Jesús Zavala, Carlos S. Frenk
The development of methods and algorithms to solve the -body problem for classical, collisionless, non-relativistic particles has made it possible to follow the growth and evolu…
The missing dwarf galaxies of the Local Group
Azadeh Fattahi, Julio F. Navarro, Carlos S. Frenk
We study the Local Group (LG) dwarf galaxy population predicted by the \apostle CDM cosmological hydrodynamics simulations. These indicate that: (i)~the total mass within Mp…
Constraining the inner density slope of massive galaxy clusters
Qiuhan He, Hongyu Li, Ran Li +7
We determine the inner density profiles of massive galaxy clusters (M > M) in the Cluster-EAGLE (C-EAGLE) hydrodynamic simulations, and investi…
Simulating cosmological substructure in the solar neighbourhood
Christine M. Simpson, Ignacio Gargiulo, Facundo A. Gómez +8
We explore the predictive power of cosmological, hydrodynamical simulations for stellar phase space substructure and velocity correlations with the Auriga simulations and Aurigaia…
Ultra-diffuse galaxies in the Auriga simulations
Shihong Liao, Liang Gao, Carlos S. Frenk +7
We investigate the formation of ultra-diffuse galaxies (UDGs) using the Auriga high-resolution cosmological magneto-hydrodynamical simulations of Milky Way-sized galaxies. We ident…
Evolution of galactic planes of satellites in the EAGLE simulation
Shi Shao, Marius Cautun, Carlos S. Frenk
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 t…
4MOST: Project overview and information for the First Call for Proposals
R. S. de Jong, O. Agertz, A. Agudo Berbel +335
We introduce the 4-metre Multi-Object Spectroscopic Telescope (4MOST), a new high-multiplex, wide-field spectroscopic survey facility under development for the four-metre-class Vis…
Simulating the dark matter decay signal from the Perseus galaxy cluster
Mark R. Lovell, Dmytro Iakubovskyi, David Barnes +4
The nearby Perseus galaxy cluster is a key target for indirect detection searches for decaying dark matter. We use the C-EAGLE simulations of galaxy clusters to predict the flux, w…
The Cosmic Ballet II: Spin alignment of galaxies and haloes with large-scale filaments in the EAGLE simulation
Punyakoti Ganeshaiah Veena, Marius Cautun, Elmo Tempel +2
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…