260 citations · 2k across the 45 of their papers we have counts for
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Testing strong lensing subhalo detection with a cosmological simulation
Qiuhan He, James Nightingale, Andrew Robertson +9
Strong gravitational lensing offers a compelling test of the cold dark matter paradigm, as it allows for subhaloes with masses of M and below to be detected. W…
Automated galaxy-galaxy strong lens modelling: no lens left behind
Amy Etherington, James W. Nightingale, Richard Massey +9
The distribution of dark and luminous matter can be mapped around galaxies that gravitationally lens background objects into arcs or Einstein rings. New surveys will soon observe h…
Cold dark matter subhaloes at arbitrarily low masses
Nicola C. Amorisco
A defining prediction of the cold dark matter (CDM) cosmological model is the existence of a very large population of low mass haloes, down to planet-size masses. However, their fa…
Galaxy-galaxy strong lens perturbations: line-of-sight haloes versus lens subhaloes
Qiuhan He, Ran Li, Carlos S. Frenk +8
We rederive the number density of intervening line-of-sight haloes relative to lens subhaloes in galaxy-galaxy strong lensing observations, where these perturbers can generate dete…
Halo concentration strengthens dark matter constraints in galaxy-galaxy strong lensing analyses
Nicola C. Amorisco, James Nightingale, Qiuhan He +8
A defining prediction of the cold dark matter (CDM) cosmological model is the existence of a very large population of low-mass haloes. This population is absent in models in which…
Dark matter cores in the Fornax and Sculptor dwarf galaxies: joining halo assembly and detailed star formation histories
Nicola C. Amorisco, Jesus Zavala, Thomas J. L. de Boer
We combine the detailed Star Formation Histories of the Fornax and Sculptor dwarf Spheroidals with the Mass Assembly History of their dark matter (DM) halo progenitors to estimate…
The core size of the Fornax dwarf Spheroidal
N. C. Amorisco, A. Agnello, N. W. Evans
We exploit the detection of three distinct stellar subpopulations in the red giant branch of the Fornax dwarf Spheroidal to probe its density distribution. This allows us to resolv…
A Troublesome Past: Chemodynamics of the Fornax dwarf spheroidal
N. C. Amorisco, N. W. Evans
We present compelling evidence for the complexity of the Fornax dwarf spheroidal. By disentangling three different stellar subpopulations in its red giant branch, we are able to st…
Line Profiles from Discrete Kinematic Data
N. C. Amorisco, N. W. Evans
We develop a method to extract the shape information of line profiles from discrete kinematic data. The Gauss-Hermite expansion, which is widely used to describe the line of sight…
Dark Matter Cores and Cusps: The Case of Multiple Stellar Populations in Dwarf Spheroidals
N. C. Amorisco, N. W. Evans
A number of dwarf spheroidal (dSph) galaxies are known to contain a more extended, metal-poor population with a flattish velocity dispersion profile, and a more concentrated, metal…
Self-consistent nonspherical isothermal halos embedding zero-thickness disks
N. C. Amorisco, G. Bertin
Disk-halo decompositions of galaxy rotation curves are generally performed in a parametric way. We construct self-consistent models of nonspherical isothermal halos embedding a zer…
Prominent spiral arms in the gaseous outer galaxy disks
G. Bertin, N. C. Amorisco
Context: Several spiral galaxies, as beautifully exhibited by the case of NGC 6946, display a prominent large-scale spiral structure in their gaseous outer disk. Such structure is…