Weak Lensing Results of the Merging Cluster A1758

Abstract

Here we present the weak lensing results of A1758, which is known to consist of four subclusters undergoing two separate mergers, A1758N and A1758S. Weak lensing results of A1758N agree with previous weak lensing results of clusters 1E0657-558 (Bullet cluster) and MACS J0025.4-1222, whose X-ray gas components were found to be largely separated from their clusters' gravitational potentials. A1758N has a geometry that is different from previously published mergers in that one of its X-ray peaks overlays the corresponding gravitational potential and the other X-ray peak is well separated from its cluster's gravitational potential. The weak lensing mass peaks of the two northern clusters are separated at the 2.5 sigma level. We estimate the combined mass of the clusters in A1758N to be 2.2+/-0.5*10^15 M_sun and r_200=2300(+100/-130) kpc. We also detect seven strong lensing candidates, two of which may provide information that would improve the mass measurements of A1758N.

10 pages, 3 figures, accepted to ApJ

References in corpus (11)

• A direct empirical proof of the existence of dark matter
• COSMOS Photometric Redshifts with 30-bands for 2-deg2
• Constraints on the Self-Interaction Cross-Section of Dark Matter from Numerical Simulations of the Merging Galaxy Cluster 1E 0657-5
• The Shear TEsting Programme 2: Factors affecting high precision weak lensing analyses
• Revealing the properties of dark matter in the merging cluster MACSJ0025.4-1222
• The Sloan Lens ACS Survey. VI: Discovery and analysis of a double Einstein ring
• On the Proof of Dark Matter, the Law of Gravity and the Mass of Neutrinos
• The Bullet Cluster 1E0657-558 evidence shows Modified Gravity in the absence of Dark Matter
• Can MOND take a bullet? Analytical comparisons of three versions of MOND beyond spherical symmetry
• Asymmetric Gravitational Lenses in TeVeS and Application to the Bullet Cluster
• Scaling Rrelation in two situations of extreme mergers

Cited by in corpus (32)

• The Canadian Cluster Comparison Project: detailed study of systematics and updated weak lensing masses
• What does the Bullet Cluster tell us about self-interacting dark matter?
• Measuring the Ultimate Mass of Galaxy Clusters: Redshifts and Mass Profiles from the Hectospec Cluster Survey (HeCS)
• The Canadian Cluster Comparison Project: weak lensing masses and SZ scaling relations
• Discovery of a Dissociative Galaxy Cluster Merger with Large Physical Separation
• An improved model of Charge Transfer Inefficiency and correction algorithm for the Hubble Space Telescope
• On Dark Peaks and Missing Mass: A Weak Lensing Mass Reconstruction of the Merging Cluster System Abell 520
• LOFAR discovery of a double radio halo system in Abell 1758 and radio/X-ray study of the cluster pair
• Low frequency follow up of radio halos and relics in the GMRT Radio Halo Cluster Survey
• The Dynamics of Merging Clusters: A Monte Carlo Solution Applied to the Bullet and Musket Ball Clusters
• Deep Luminosity Functions and Colour-Magnitude Relations for Cluster Galaxies at 0.2 < z < 0.6
• Weak lensing analysis of RXC J2248.7-4431
• Simulations of the merging galaxy cluster Abell 3376
• The merger history of the complex cluster Abell 1758: a combined weak lensing and spectroscopic view
• Hubble Asteroid Hunter: II. Identifying strong gravitational lenses in HST images with crowdsourcing
• Abell 1758N from an optical point of view: new insights on a merging cluster with diffuse radio emission
• Reconciling galaxy cluster shapes, measured by theorists vs observers
• Multi-wavelength Analysis of the Merging Galaxy Cluster A115
• HeCS-red: Dense Hectospec Surveys of redMaPPer-Selected Clusters
• Multi-Phenomena Modeling of the New Bullet Cluster, ZwCl008.8+52, using N-body/hydrodynamical Simulations
• Simulations of the merging galaxy cluster Abell 2034: what determines the level of separation between gas and dark matter
• The Distribution of Dark and Luminous Matter in the Unique Galaxy Cluster Merger Abell 2146
• Mass accretion rates of clusters of galaxies: CIRS and HeCS
• Analytical shear and flexion of Einasto dark matter haloes
• Jellyfish: Resolving the kinematics of extreme ram-pressure stripping at $z\sim 0.3$
• Forming one of the most massive objects in the Universe: The quadruple merger in Abell 1758
• The MeSsI (Merging Systems Identification) Algorithm & Catalogue
• The Burst Cluster: Dark Matter in a Cluster Merger Associated with the Short Gamma Ray Burst, GRB 050509B
• The three-dimensional geometry and merger history of the massive galaxy cluster MACS J0358.8-2955
• Towards a Bullet-proof test for indirect signals of dark matter
• Weak-Lensing Analysis of the Complex Cluster Merger Abell 746 with Subaru/Hyper Suprime-Cam
• Protruding bullet heads indicating dark matter pull