170 citations · 1.3k across the 49 of their papers we have counts for
9 papers · 1 filter
From particles to orbits: precise dark matter density profiles using dynamical information
Claudia Muni, Andrew Pontzen, Jason L. Sanders +3
We introduce a new method to calculate dark matter halo density profiles from simulations. Each particle is 'smeared' over its orbit to obtain a dynamical profile that is averaged…
EDGE -- Dark matter or astrophysics? Breaking dark matter heating degeneracies with HI rotation in faint dwarf galaxies
Martin P. Rey, Matthew D. A. Orkney, Justin I. Read +6
Low-mass dwarf galaxies are expected to reside within dark matter haloes that have a pristine, `cuspy' density profile within their stellar half-light radii. This is because they f…
EDGE: The direct link between mass growth history and the extended stellar haloes of the faintest dwarf galaxies
Alex Goater, Justin I. Read, Noelia E. D. Noël +9
Ultra-faint dwarf galaxies (UFDs) are commonly found in close proximity to the Milky Way and other massive spiral galaxies. As such, their projected stellar ellipticity and extende…
VINTERGATAN-GM: How do mergers affect the satellite populations of MW-like galaxies?
Gandhali D. Joshi, Andrew Pontzen, Oscar Agertz +3
We investigate the impact of a galaxy's merger history on its system of satellites using the new \textsc{vintergatan-gm} suite of zoom-in hydrodynamical simulations of Milky Way-ma…
The Highest-Redshift Balmer Breaks as a Test of CDM
Charles L. Steinhardt, Albert Sneppen, Thorbjørn Clausen +3
Recent studies have reported tension between the presence of luminous, high-redshift galaxies and the halo mass functions predicted by standard cosmology. Here, an improved test is…
Nitrogen enhancements 440 Myr after the Big Bang: super-solar N/O, a tidal disruption event or a dense stellar cluster in GN-z11?
Alex J. Cameron, Harley Katz, Martin P. Rey +1
Recent observations of GN-z11 with JWST/NIRSpec revealed numerous oxygen, carbon, nitrogen, and helium emission lines at . Using the measured line fluxes, we derive abundan…
EDGE: The shape of dark matter haloes in the faintest galaxies
Matthew D. A. Orkney, Ethan Taylor, Justin I. Read +5
Collisionless Dark Matter Only (DMO) structure formation simulations predict that Dark Matter (DM) haloes are prolate in their centres and triaxial towards their outskirts. The add…
Boosting galactic outflows with enhanced resolution
Martin P. Rey, Harley B. Katz, Alex J. Cameron +2
We study how better resolving the cooling length of galactic outflows affect their energetics. We perform radiative-hydrodynamical galaxy formation simulations of an isolated dwarf…
Bringing Stellar Evolution & Feedback Together: Summary of proposals from the Lorentz Center Workshop, 2022
Sam Geen, Poojan Agrawal, Paul A. Crowther +34
Stars strongly impact their environment, and shape structures on all scales throughout the universe, in a process known as ``feedback''. Due to the complexity of both stellar evolu…