Strong and weak lensing united III: Measuring the mass distribution of the merging galaxy cluster 1E0657-56

By M. Bradač, D. Clowe, Anthony H. Gonzalez, P. Marshall, W. Forman, C. Jones, M. Markevitch, S. Randall, T. Schrabback, Dennis Zaritsky Kipac and 9 more. 2006

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The galaxy cluster 1E0657-56 (z = 0.296) is remarkably well-suited for addressing outstanding issues in both galaxy evolution and fundamental physics. We present a reconstruction of the mass distribution from both strong and weak gravitational lensing data. Multi-color, high-resolution HST ACS images allow detection of many more arc candidates than were previously known, especially around the subcluster. Using the known redshift of one of the multiply imaged systems, we determine the remaining source redshifts using the predictive power of the strong lens model. Combining this information with shape measurements of"weakly"lensed sources, we derive a high-resolution, absolutely-calibrated mass map, using no assumptions regarding the physical properties of the underlying cluster potential. This map provides the best available quantification of the total mass of the central part of the cluster. We also confirm the result from Clowe et al. (2004,2006a).

Subfields: Astronomy and Astrophysics, Electrical and Electronic Engineering, Instrumentation

View Paper: https://www.semanticscholar.org/paper/26fbb2e601c71b5d6fbe9e41aeb39ac9f38ba030

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Citations in the corpus

Optimized dark matter searches in deep observations of Segue 1 with MAGIC (2013, background): “sheds some light on its nature as well, is the case of the “Bullet” cluster of galaxies [9, 10].”
CLASH: JOINT ANALYSIS OF STRONG-LENSING, WEAK-LENSING SHEAR, AND MAGNIFICATION DATA FOR 20 GALAXY CLUSTERS (2015, background): “Hence, combining strong and weak lensing can significantly improve constraints on the cluster mass distribution for full radial coverage (Bradač et al. 2006; Limousin et al. 2007; Merten et al. 2009; Diego et al. 2015).”
The speed of the ‘bullet’ in the merging galaxy cluster 1E0657−56 (2007, methodology): “The matter distribution and masses quoted above have been determined from weak and strong lensing studies (Clowe et al. 2004, 2006; Bradǎc et al. 2006).”
Combining Lens Distortion and Depletion to Map the Mass Distribution of A1689 (2007, background): “From space, deep multi-color images of massive clusters can be used to identify many sets of multiple images per cluster (Broadhurst et al. 2005b, hereafter B05b; Gavazzi et al. 2003; Kneib et al. 2004; Sand et al. 2004; Smith et al. 2005; Bradač et al. 2006).”
Constraints on the Self-Interaction Cross Section of Dark Matter from Numerical Simulations of the Merging Galaxy Cluster 1E 0657–56 (2007, background): “Recent weak and strong lensing analyses of a much larger optical data set, which includes Hubble Space Telescope (HST ) observations, give a higher quality mass map and a more accurate determination of the subcluster DM and galaxy centroids (Bradač et al. 2006, hereafter B06; C06).”
The Bullet Cluster 1E0657-558 evidence shows modified gravity in the absence of dark matter (2007, methodology): “The resolution of the Σ-map is 8.5 kpc/pixel, based upon the measured redshift distance ∼ 260.0 kpc/arcminute of the Bullet Cluster 1E0657-558 (Bradač et al., 2006).”
RESIDUAL GAS MOTIONS IN THE INTRACLUSTER MEDIUM AND BIAS IN HYDROSTATIC MEASUREMENTS OF MASS PROFILES OF CLUSTERS (2009, background): “…via strong lensing (Smith et al. 2005), weak lensing (e.g., Dahle 2006; Mahdavi et al. 2008; Zhang et al. 2008), combined strong and weak lensing (Bradač et al. 2006; Limousin et al. 2007; Oguri et al. 2009), and Sunyaev-Zel’dovich effect (e.g., Carlstrom et al. 2002, for a recent review) have…”
Cosmological Parameters from Observations of Galaxy Clusters (2011, background): “In combination with weak lensing, strong lensing constraints can improve significantly the absolute calibration of projected mass maps (e.g. Bradač et al. 2005, 2006; Meneghetti et al. 2010).”
HUBBLE SPACE TELESCOPE COMBINED STRONG AND WEAK LENSING ANALYSIS OF THE CLASH SAMPLE: MASS AND MAGNIFICATION MODELS AND SYSTEMATIC UNCERTAINTIES (2014, background): “Various studies have previously combined SL+WL (e.g., Bradač et al. 2006; Limousin et al. 2007; Merten et al. 2009, 2011; Umetsu et al. 2011a, 2011b, 2012; Oguri et al. 2012; Newman et al. 2013a, 2013b).”
Revealing the Properties of Dark Matter in the Merging Cluster MACS J0025.4–1222 (2008, methodology): “…mergers the most energetic events since the Big Bang, but, as demonstrated by a recent study of the Bullet Cluster (1E0657−56; Clowe et al. 2004; Bradač et al. 2006; Clowe et al. 2006), they provide a unique avenue by which to probe the self- Electronic address: marusa@physics.ucsb.edu *…”
Creation of cosmic structure in the complex galaxy cluster merger Abell 2744 (2011, methodology): “For the Bullet Cluster, Markevitch et al. (2004) found σ/m < 5 cm2g−1, and for the Baby Bullet, Bradač et al. (2008) found σ/m < 4 cm2g−1.”
Multiscale cluster lens mass mapping - I. Strong lensing modelling (2009, background): “New lensing results reveal irregular or merging clusters (e.g. Bradač et al. 2006; Jee et al. 2007; Mahdavi et al. 2007).”
Masses of Galaxy Clusters from Gravitational Lensing (2013, methodology): “Using a finite field inversion method and HST data, Clowe et al. (2006b) determined the separation to be significant at the 8σ level, which was confirmed in an analysis also incorporating strong lensing data (Bradač et al. 2006).”