Systematic vs. Statistical Uncertainties in Masses and Magnifications of the Hubble Frontier Fields
arXiv:2004.05952 · doi:10.1093/mnras/staa921
Abstract
The Hubble Frontier Fields data, along with multiple data sets obtained by other telescopes, have provided some of the most extensive constraints on cluster lenses to date. Multiple lens modeling teams analyzed the fields and made public a number of deliverables. By comparing these results, we can then undertake a unique and vital test of the state of cluster lens modeling. Specifically, we see how well the different teams can reproduce similar magnifications and mass profiles. We find that the circularly averaged mass profiles of the fields are remarkably constrained (scatter <5%) at distances of 1 arcmin from the cluster core, yet magnifications can vary significantly. Averaged across the six fields, we find a bias of -6% (-17%) and a scatter of ~40% (~65%) at a modest magnification of 3 (10). Statistical errors reported by individual teams are often significantly smaller than the differences among all the teams, indicating the importance of continued systematics studies in cluster lensing.
25 pages, 21 figures. Accepted for publication in MNRAS
References in corpus (24)
- A direct empirical proof of the existence of dark matter
- A Bayesian approach to strong lensing modelling of galaxy clusters
- The non-gravitational interactions of dark matter in colliding galaxy clusters
- Rotation-Dependent Catastrophic Disruption of Gravitational Aggregates
- Revealing the properties of dark matter in the merging cluster MACSJ0025.4-1222
- A complete sample of twelve very X-ray luminous galaxy clusters at z>0.5
- CLASH: Weak-Lensing Shear-and-Magnification Analysis of 20 Galaxy Clusters
- Cluster Lenses
- Mass and magnification maps for the Hubble Space Telescope Frontier Fields clusters: implications for high redshift studies
- Lens models and magnification maps of the six Hubble Frontier Fields clusters
- CLASH-VLT: Insights on the mass substructures in the Frontier Fields Cluster MACS J0416.1-2403 through accurate strong lens modeling
- Hubble Frontier Fields First Complete Cluster Data: Faint Galaxies at for UV Luminosity Functions and Cosmic Reionization
- Hubble Frontier Fields : A High Precision Strong Lensing Analysis of Galaxy Cluster MACSJ0416.1-2403 using ~200 Multiple Images
- The systematics of strong lens modeling quantified: the effects of constraint selection and redshift information on magnification, mass, and multiple image predictability
- Discovery of the largest known lensed images formed by a critically convergent lensing cluster
- Star Formation at z=2.481 in the Lensed Galaxy SDSS J1110+6459: Star Formation down to 30 parsec scales
- Probing 3D Structure with a Large MUSE Mosaic: Extending the Mass Model of Frontier Field Abell 370
- Non-parametric inversion of gravitational lensing systems with few images using a multi-objective genetic algorithm
- A Free-Form Lensing Grid Solution for A1689 with New Mutiple Images
- Detecting Dark Matter Cores in Galaxy Clusters with Strong Lensing
- Probability of magnification in the clusters
- Exploring Effects on Magnifications due to Line-of-Sight Galaxies in the Hubble Frontier Fields
- Comparisons between isothermal and NFW mass profiles for strong-lensing galaxy clusters
- Lens Model and Source Reconstruction Reveal the Morphology and Star Formation Distribution in the Cool Spiral LIRG SGAS J143845.1145407