The cards below are refreshed weekly from my NASA ADS library, with a representative figure extracted from each paper and a short plain-language summary of its abstract. For the complete publication record see my ADS library or my ORCID profile.
Testing Warm Dark Matter with Kinematics of the Smallest Galaxies
Every dark matter halo forms with a dense spike at its center, and if dark matter is "warm" enough to erase small-scale structure those spikes are heavy enough to speed up the stars in the smallest galaxies — yet the stars in Tucana V and Triangulum II move far too slowly to match. Taken together, the three faintest Milky Way satellites rule out dark matter particles lighter than 5.8 keV at 95% confidence, a limit that better velocity measurements or the discovery of more such galaxies could sharpen considerably.
Warm, Not Fuzzy: Generalized Ultralight Dark Matter Limits from Milky Way Satellites
Ultralight dark matter produced with structure on small scales behaves less like the "fuzzy" dark matter usually assumed and more like warm dark matter, with an additional wave-interference effect that adds small-scale structure back in. Matching this against the observed population of Milky Way satellite galaxies sets a new lower limit on the particle mass that depends on the scale at which the field's structure peaks.
The free-streaming length of dark matter from JWST observations of 28 strong gravitational lenses
This study uses observations from the James Webb Space Telescope to measure the properties of dark matter halos in 28 strong gravitational lens systems, providing significant constraints on the free-streaming length of dark matter. The results support the cold dark matter model by ruling out deviations on large scales and establishing lower limits on the mass of thermal relic dark matter particles.
Mixed Dark Matter: Limits from the Milky Way Satellite Galaxies
This study establishes new constraints on mixed dark matter models using data from Milky Way satellite galaxies, revealing how the presence of different dark matter components affects the formation of small-scale structures. The findings indicate that as the fraction of non-standard dark matter increases, the constraints on its properties weaken, highlighting the need for future surveys to refine these limits further.
A Unified Halo Mass Function Across Dark Matter Models from High-Resolution Multi-Scale Simulations
This research presents a highly precise model for the dark matter halo mass function, applicable across various dark matter theories and effective over a vast range of halo masses. The model's accuracy and ability to account for environmental influences make it essential for future dark matter studies and data analysis.
Calibrating the self-interacting dark matter gravothermal catastrophe with N-body simulations
Dark matter halos that interact with themselves eventually undergo a runaway collapse of their inner regions, a process usually modelled by treating the dark matter as a heat-conducting fluid with one free parameter that different studies have set differently. A suite of N-body simulations shows that this parameter does not depend on halo mass, concentration, or interaction strength, allowing fast and consistent predictions without running new simulations.