Albatross: a scalable simulation-based inference pipeline for analysing stellar streams in the Milky Way
Stellar streams are potentially a very sensitive observational probe of galactic astrophysics,
as well as the dark matter population in the Milky Way. On the other hand, performing a …
as well as the dark matter population in the Milky Way. On the other hand, performing a …
Limits on dark matter annihilation in prompt cusps from the isotropic gamma-ray background
Recent studies indicate that thermally produced dark matter will form highly concentrated,
low-mass cusps in the early universe that often survive until the present. While these cusps …
low-mass cusps in the early universe that often survive until the present. While these cusps …
Prompt cusps and the dark matter annihilation signal
As the first dark matter objects gravitationally condense, a density cusp forms immediately at
every initial density maximum. Numerical simulations and theoretical arguments suggest …
every initial density maximum. Numerical simulations and theoretical arguments suggest …
Testing the Galaxy-collision-induced Formation Scenario for the Trail of Dark-matter-deficient Galaxies with the Susceptibility of Globular Clusters to the Tidal Force
It has been suggested that a trail of diffuse galaxies, including two dark-matter-deficient
galaxies (DMDGs), in the vicinity of NGC 1052 formed because of a high-speed collision …
galaxies (DMDGs), in the vicinity of NGC 1052 formed because of a high-speed collision …
Collisionless relaxation from near equilibrium configurations: Linear theory and application to tidal strip**
S Rozier, R Errani - arxiv preprint arxiv:2402.03430, 2024 - arxiv.org
Placed slightly out of dynamical equilibrium, an isolated stellar system quickly returns
towards a steady virialized state. We study this process of collisionless relaxation using the …
towards a steady virialized state. We study this process of collisionless relaxation using the …
The tidal evolution of anisotropic subhaloes: A new pathway to creating isotropic and cored satellites
It is common practice, both in dynamical modelling and in idealised numerical simulations,
to assume that galaxies and/or dark matter haloes are spherical and have isotropic velocity …
to assume that galaxies and/or dark matter haloes are spherical and have isotropic velocity …
Do assumptions about the central density of subhaloes affect dark matter annihilation and lensing calculations?
A growing body of evidence suggests that the central density of cuspy dark matter subhaloes
is conserved in minor mergers. However, empirical models of subhalo evolution, calibrated …
is conserved in minor mergers. However, empirical models of subhalo evolution, calibrated …