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Date and Time of the Query: 2019-07-19 T05:11:53 PDT
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For refcode 2016ApJ...821..116U:
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2016ApJ...821..116U CLASH: Joint Analysis of Strong-lensing, Weak-lensing Shear, and Magnification Data for 20 Galaxy Clusters Umetsu, Keiichi; Zitrin, Adi; Gruen, Daniel; Merten, Julian; Donahue, Megan; Postman, Marc Abstract. We present a comprehensive analysis of strong-lensing, weak-lensing shear and magnification data for a sample of 16 X-ray-regular and 4 high-magnification galaxy clusters at 0.19<~ z<~ 0.69 selected from Cluster Lensing And Supernova survey with Hubble (CLASH). Our analysis combines constraints from 16-band Hubble Space Telescope observations and wide-field multi-color imaging taken primarily with Suprime-Cam on the Subaru Telescope, spanning a wide range of cluster radii (10"-16'). We reconstruct surface mass density profiles of individual clusters from a joint analysis of the full lensing constraints, and determine masses and concentrations for all of the clusters. We find the internal consistency of the ensemble mass calibration to be <=5% +/- 6% in the one-halo regime (200-2000 kpc h^-1^) compared to the CLASH weak-lensing-only measurements of Umetsu et al. For the X-ray-selected subsample of 16 clusters, we examine the concentration-mass (c-M) relation and its intrinsic scatter using a Bayesian regression approach. Our model yields a mean concentration of c{|}_z=0.34_=3.95+/- 0.35 at M_200c_ ~= 14 x 10^14^ M_sun_ and an intrinsic scatter of sigma ({ln}{c}_200{{c_}})=0.13+/- 0.06, which is in excellent agreement with Lambda cold dark matter predictions when the CLASH selection function based on X-ray morphological regularity and the projection effects are taken into account. We also derive an ensemble-averaged surface mass density profile for the X-ray-selected subsample by stacking their individual profiles. The stacked lensing signal is detected at 33sigma significance over the entire radial range <=4000 kpc h^-1^, accounting for the effects of intrinsic profile variations and uncorrelated large-scale structure along the line of sight. The stacked mass profile is well described by a family of density profiles predicted for cuspy dark-matter-dominated halos in gravitational equilibrium, namely, the Navarro-Frenk-White (NFW), Einasto, and DARKexp models, whereas the single power-law, cored isothermal and Burkert density profiles are disfavored by the data. We show that cuspy halo models that include the large-scale two-halo term provide improved agreement with the data. For the NFW halo model, we measure a mean concentration of {c}_200{{c_}}={3.79}_-0.28_^+0.30^ at {M}_200{{c_}}={14.1}_-1.0_^+1.0^x {10}^14^ {M}_sun_, demonstrating consistency between the complementary analysis methods. Based in part on data collected at the Subaru Telescope, which is operated by the National Astronomical Society of Japan. Key words: cosmology: observations, dark matter, galaxies: clusters: general, gravitational lensing: strong, gravitational lensing: weak
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