A persistent excess of galaxy-galaxy strong lensing observed in galaxy clusters

Abstract

Previous studies have revealed that the estimated probability of galaxy-galaxy strong lensing in observed galaxy clusters exceeds the expectations from the $\Lambda$ Cold Dark Matter cosmological model by one order of magnitude. We aim to understand the origin of this excess by analyzing a larger set of simulated galaxy clusters and investigating how the theoretical expectations vary under different adopted prescriptions and numerical implementations of star formation and feedback in simulations. We perform a ray-tracing analysis of 324 galaxy clusters from the Three Hundred project, comparing the Gadget-X and Gizmo-Simba runs. These simulations, which start from the same initial conditions, are performed with different implementations of hydrodynamics and galaxy formation models tailored to match different observational properties of the Intra-Cluster-Medium and cluster galaxies. We find that galaxies in the Gizmo-Simba simulations develop denser stellar cores than their Gadget-X counterparts. Consequently, their probability for galaxy-galaxy strong lensing is higher by a factor of $\sim 3$. This increment is still insufficient to fill the gap with observations, as a discrepancy by a factor $\sim 4$ still persists. In addition, we find that several simulated galaxies have Einstein radii that are too large compared to observations. We conclude that a persistent excess of galaxy-galaxy strong lensing exists in observed galaxy clusters. The origin of this discrepancy with theoretical predictions is still unexplained in the framework of the cosmological hydrodynamical simulations. This might signal a hitherto unknown issue with either the simulation methods or our assumptions regarding the standard cosmological model.

arXiv comment6 pages, 2 figures, accepted for publication on A&A Letters. See companion paper Srivastava et al. (2023)

References in corpus (51)

• Planck 2015 results. XIII. Cosmological parameters
• A Universal Density Profile from Hierarchical Clustering
• Dark Matter Substructure in Galactic Halos
• Where are the missing galactic satellites?
• Modeling feedback from stars and black holes in galaxy mergers
• Small-Scale Challenges to the $\Lambda$CDM Paradigm
• GIZMO: A New Class of Accurate, Mesh-Free Hydrodynamic Simulation Methods
• Simba: Cosmological Simulations with Black Hole Growth and Feedback
• The Connection between Galaxies and their Dark Matter Halos
• A Bayesian approach to strong lensing modelling of galaxy clusters
• Direct Detection of CDM Substructure
• Evidence for substructure in lens galaxies?
• Hubble Space Telescope Observations of the Lensing Cluster Abell 2218
• Gravitational detection of a low-mass dark satellite at cosmological distance
• MUFASA: Galaxy Formation Simulations With Meshless Hydrodynamics
• Detection of lensing substructure using ALMA observations of the dusty galaxy SDP.81
• Cluster Lenses
• Universal structure of dark matter haloes over a mass range of 20 orders of magnitude
• Resolving the discrepancy between X-ray and gravitational lensing mass measurements for clusters of galaxies
• The Frontier Fields Lens Modeling Comparison Project
• The Three Hundred project: a large catalogue of theoretically modelled galaxy clusters for cosmological and astrophysical applications
• The X-ray brightest clusters of galaxies from the Massive Cluster Survey
• Cool Core Clusters from Cosmological Simulations
• The Spur and the Gap in GD-1: Dynamical evidence for a dark substructure in the Milky Way halo
• CLASH-VLT: The mass, velocity-anisotropy, and pseudo-phase-space density profiles of the z=0.44 galaxy cluster MACS 1206.2-0847
• CLASH-VLT: Insights on the mass substructures in the Frontier Fields Cluster MACS J0416.1-2403 through accurate strong lens modeling
• The Population of Dark Matter Subhaloes: Mass Functions and Average Mass Loss Rates
• An excess of small-scale gravitational lenses observed in galaxy clusters
• The MUSIC of CLASH: predictions on the concentration-mass relation
• Lensing by galaxy halos in clusters of galaxies
• Accelerating early massive galaxy formation with primordial black holes
• CLASH-VLT: Dissecting the Frontier Fields Galaxy Cluster MACS J0416.1-2403 with $\sim 800$ Spectra of Member Galaxies
• Mapping substructure in the HST Frontier Fields cluster lenses and in cosmological simulations
• Enhanced cluster lensing models with measured galaxy kinematics
• \textsc{The Three Hundred} project: The \textsc{Gizmo-Simba} run
• Reproducing sub-millimetre galaxy number counts with cosmological hydrodynamic simulations
• The GLASS-JWST Early Release Science Program. III. Strong lensing model of Abell 2744 and its infalling regions
• New high-precision strong lensing modeling of Abell 2744. Preparing for JWST observations
• The DIANOGA simulations of galaxy clusters: characterizing star formation in proto-clusters
• Exploring the high-redshift PBH-$\Lambda$CDM Universe: early black hole seeding, the first stars and cosmic radiation backgrounds
• A new high-precision strong lensing model of the galaxy cluster MACS J0416.1-2403
• CLASH-VLT: spectroscopic confirmation of a z=6.11 quintuply lensed galaxy in the Frontier Fields Cluster RXC J2248.7-4431
• Self-Interacting Dark Matter and Small-Scale Gravitational Lenses in Galaxy Clusters
• The probability of galaxy-galaxy strong lensing events in hydrodynamical simulations of galaxy clusters
• NIHAO-XXIII: Dark Matter density shaped by Black Hole feedback
• A state-of-the-art strong lensing model of MACS J0416.1-2403 with the largest sample of spectroscopic multiple images
• Strongly lensed cluster substructures are not in tension with $\Lambda$CDM
• The galaxy-galaxy strong lensing cross-sections of simulated LCDM galaxy clusters
• The Three Hundred Project: the evolution of physical baryon profiles
• Brightest Cluster Galaxies Trace Weak Lensing Mass Bias and Halo Triaxiality in The Three Hundred Project
• Properties and observables of massive galaxies in self-interacting dark matter cosmologies

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• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• A Self-interacting Dark Matter Solution to the Extreme Diversity of Low-mass Halo Properties
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• Detecting low-mass haloes with strong gravitational lensing II: constraints on the density profiles of two detected subhaloes
• Introducing the AIDA-TNG project: galaxy formation in alternative dark matter models
• Self-Interacting Dark Matter, Core Collapse and the Galaxy-Galaxy Strong Lensing Discrepancy
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• Exploring the low-mass regime of galaxy-scale strong lensing: Insights into the mass structure of cluster galaxies
• Subhalo effective density slope measurements from HST strong lensing data with neural likelihood-ratio estimation
• HOLISMOKES XIII: Strong-lens candidates at all mass scales and their environments from the Hyper-Suprime Cam and deep learning
• Improved model of the Supernova Refsdal cluster MACS J1149.5+2223 thanks to VLT/MUSE
• Accurate Measurement of the Lensing Magnification by BOSS CMASS Galaxies and Its Implications for Cosmology and Dark Matter
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• Impact of primordial black holes on the formation of the first stars and galaxies
• New Cold Dark Matter Crisis Revealed by Multiscale Cluster Lensing
• The AIDA-TNG project: dark matter profiles and concentrations in alternative dark matter models
• Parametric strong lensing model of the galaxy cluster Abell 2390 from Euclid and MUSE observations
• An Interpretable AI Framework to Disentangle Self-Interacting and Cold Dark Matter in Galaxy Clusters: The CKAN Approach
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