activity
19952025
most citedThe Frontier Fields Lens Modeling Comparison Project

233 citations · 3.3k across the 110 of their papers we have counts for

collaborators

111 papers

astro-ph.CO2025★ 3 cited

Testing Light Unaffiliated Mass Clumps in MACS 0416 on galaxy and galaxy cluster scales using JWST

Marceau Limousin, Derek Perera, Gregor Rihtarsic +2

Light unaffiliated mass clumps (LUMCs), i.e. dark matter (DM) components without any stellar counterparts, have been reported in strong lensing mass reconstructions of MACS 0416, b…

astro-ph.CO2025

Constraining the z 1 Initial Mass Function with {\it HST} and {\it JWST} Lensed Stars in MACS J0416.1-2403

Sung Kei Li, Jose M. Diego, Ashish K. Meena +19

Our understanding of galaxy properties and evolution is contingent on knowing the initial mass function (IMF), and yet to date, the IMF is constrained only to local galaxies. Indiv…

astro-ph.GA2025★ 5 cited

Flashlights: Prospects for constraining the Initial Mass Function around cosmic noon with caustic-crossing events

Ashish Kumar Meena, Sung Kei Li, Adi Zitrin +7

The Flashlights program with the Hubble Space Telescope imaged the six Hubble Frontier Fields galaxy clusters in two epochs and detected twenty transients. These are primarily expe…

astro-ph.CO2025

Entropy Evolution Towards DARKexp of IllustrisTNG Dark Matter Halos

Ashley Francis, Liliya L. R. Williams, Jens Hjorth

Dark matter (DM) halos simulated via N-body techniques are known to exhibit nearly universal profiles at equilibrium; however, their origin remains uncertain despite thorough inves…

astro-ph.GA2025★ 2 cited

Addressing the core-cusp and diversity problem of dwarf and disk galaxies using cold collisionless DARKexp theory

Liliya L. R. Williams, Jens Hjorth, Evan D. Skillman

Dwarf galaxies are observed to have linearly rising rotation curves, which indicate constant density cores in their centers. These do not arise naturally from dark matter only simu…

astro-ph.GA2024★ 6 cited

Are Models of Strong Gravitational Lensing by Clusters Converging or Diverging?

Derek Perera, John H Miller, Liliya L. R. Williams +4

The increasingly large numbers of multiple images in cluster-scale gravitational lenses have allowed for tighter constraints on the mass distributions of these systems. Most lens m…