Stellar streams in the Gaia era
The hierarchical model of galaxy formation predicts that the Milky Way halo is populated by
tidal debris of dwarf galaxies and globular clusters. Due to long dynamical times, debris from …
tidal debris of dwarf galaxies and globular clusters. Due to long dynamical times, debris from …
Turbocharging constraints on dark matter substructure through a synthesis of strong lensing flux ratios and extended lensed arcs
Strong gravitational lensing provides a purely gravitational means to infer properties of dark
matter haloes and thereby constrain the particle nature of dark matter. Strong lenses …
matter haloes and thereby constrain the particle nature of dark matter. Strong lenses …
Tidal evolution of cored and cuspy dark matter halos
The internal structure and abundance of dark matter halos and subhalos are powerful
probes of the nature of dark matter. In order to compare observations with dark matter …
probes of the nature of dark matter. In order to compare observations with dark matter …
Star Stream Velocity Distributions in Cold Dark Matter and Warm Dark Matter Galactic Halos
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 …
streams. Over time, the random velocities in the streams develop non-Gaussian wings. The …
Haunted haloes: tracking the ghosts of subhaloes lost by halo finders
Dark matter subhaloes are key for the predictions of simulations of structure formation, but
their existence frequently ends prematurely due to two technical issues, namely numerical …
their existence frequently ends prematurely due to two technical issues, namely numerical …
On the accuracy of dark matter halo merger trees and the consequences for semi-analytic models of galaxy formation
Á Chandro-Gómez, CP Lagos, C Power… - arxiv preprint arxiv …, 2025 - arxiv.org
Galaxy formation and evolution models, such as semi-analytic models, are powerful
theoretical tools for predicting how galaxies evolve across cosmic time. These models follow …
theoretical tools for predicting how galaxies evolve across cosmic time. These models follow …
How DREAMS are made: Emulating Satellite Galaxy and Subhalo Populations with Diffusion Models and Point Clouds
The connection between galaxies and their host dark matter (DM) halos is critical to our
understanding of cosmology, galaxy formation, and DM physics. To maximize the return of …
understanding of cosmology, galaxy formation, and DM physics. To maximize the return of …
Semi-Analytic Modeling of Dark Matter Subhalo Encounters with Thin Stellar Streams: Statistical Predictions for GD-1-like Streams in CDM
Stellar streams from disrupted globular clusters are dynamically cold structures that are
sensitive to perturbations from dark matter subhalos, allowing them in principle to trace the …
sensitive to perturbations from dark matter subhalos, allowing them in principle to trace the …
A semi-analytic model for decaying dark matter halos
Decaying dark matter (DDM) affects the evolution of cosmic structure relative to standard
cold, collisionless, stable dark matter (CDM). We introduce a new semi-analytic model for …
cold, collisionless, stable dark matter (CDM). We introduce a new semi-analytic model for …
Dark Matter Substructure: A Lensing Perspective
The study of dark matter substructure through strong gravitational lensing has shown
enormous promise in probing the properties of dark matter on sub-galactic scales. This …
enormous promise in probing the properties of dark matter on sub-galactic scales. This …