Effects of a central dark matter core on time-delay cosmography with galaxy clusters

arXiv:2609.39796 · astro-ph.CO · Submitted 2026-09-30 · Read on arXiv

astro-ph.CO

Submitted: 2026-09-30

Updated: 2026-09-30

Terminology

• Core — 76× in this paper · explained in 2 episodes
• Degeneracy — 5× in this paper · explained in 3 episodes
• Aperture — 4× in this paper · explained in 1 episode
• Brightest Cluster Galaxy — 3× in this paper
• Calibration — 2× in this paper · explained in 7 episodes
• Initial Mass Function (IMF) — 2× in this paper · explained in 2 episodes
• Weak Lensing — 2× in this paper · explained in 2 episodes
• Aperture Correction — 1× in this paper · explained in 1 episode
• Gravitational Lensing — 1× in this paper · explained in 2 episodes
• Robustness — 1× in this paper · explained in 5 episodes
• Velocity Dispersion — 1× in this paper · explained in 2 episodes

Sources

• Lower central dark matter densities in nearby galaxies than predicted by simulations
• Massive Galaxy Halos Contain Less Inner Dark Matter Than Predicted
• Planck 2018 results. VI. Cosmological parameters
• A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km/s/Mpc Uncertainty from the Hubble Space Telescope and the SH0ES Team
• Time-Delay Cosmography: Measuring the Hubble Constant and other cosmological parameters with strong gravitational lensing
• TDCOSMO 2025: Cosmological constraints from strong lensing time delays
• Hubble constant from the cluster-lensed quasar system SDSS J1004+4112: investigation of the lens model dependence
• Hubble Constant Measurement from Three Large-Separation Quasars Strongly Lensed by Galaxy Clusters
• The Frontier Fields Lens Modeling Comparison Project
• Multiple Images of a Highly Magnified Supernova Formed by an Early-Type Cluster Galaxy Lens
• Deja Vu All Over Again: The Reappearance of Supernova Refsdal
• Constraints on the Hubble constant from Supernova Refsdal's reappearance
• Cosmography with Supernova Refsdal through time-delay cluster lensing: independent measurements of the Hubble constant and geometry of the Universe
• Assessing the effect of mass-model assumptions on measuring the Hubble constant from the cluster-lensed supernova Refsdal
• The Hubble constant from the improved lens modeling of cluster-lensed supernova Refsdal with new spectroscopic redshifts and the Jackknife method
• The stellar and dark matter distributions in early-type galaxies measured by stacked weak gravitational lensing
• The Density Profiles of Massive, Relaxed Galaxy Clusters. I. The Total Density Over Three Decades in Radius
• The Density Profiles of Massive, Relaxed Galaxy Clusters. II. Separating Luminous and Dark Matter in Cluster Cores
• Detecting Dark Matter Cores in Galaxy Clusters with Strong Lensing
• A Stringent Upper Limit on Dark Matter Self-Interaction Cross Section from Cluster Strong Lensing

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