Abell 2163    

• Right Ascension: 16 15 49
• Declination: −06 09 00
• Redshift: 0.203

References:

• The authors present a weak-lensing analysis of the merging cluster A2163 using Subaru/Suprime-Cam and CFHT/Mega-Cam data and discuss the dynamics of this cluster merger, based on complementary weak-lensing, X-ray, and optical spectroscopic data sets. The cluster mass distribution is well described by three main components including the two-component main cluster A2163-A with mass ratio 1:8, and its cluster satellite A2163-B. The bimodal mass distribution in A2163-A is similar to the galaxy density distribution, but appears as spatially segregated from the brightest X-ray emitting gas region. See figure above (3 left plots: Chandra intensity in color plus weak lensing shear contours, XMM temperature map plus same weak lensing shear contours, blow-up of central region color map shows X-ray residuals after subtracting a smooth model plus shear contours). Okabe et al. 2011, ApJ, 741, 116. "Subaru Weak-lensing Study of A2163: Bimodal Mass Structure" ADS
• Spectral-imaging analysis of X-ray data obtained from XMM-Newton and Chandra observations. Bourdin, et al. 2011, A&A, 527 21. "A2163: Merger events in the hottest Abell galaxy cluster. II. Subcluster accretion with galaxy-gas separation" ADS
• Weak lensing from CFHT-Megacam. Radovich et al. 2008, A&A, 487, 55. "A weak-lensing analysis of the Abell 2163 cluster." ADS
• Dynamical analysis from an optical redshift survey with VIMOS. Maurogordato, et al. 2008, A&A, 481, 583. "A 2163: Merger events in the hottest Abell galaxy cluster. I. Dynamical analysis from optical data" ADS
• SZ detection from OVRO/BIMA used for H_0 determination (see left figure above with their SZ map at 30 GHz and contours from NVSS at 1.4 GHz). Reese et al. 2002, ApJ, 581, 53. "Determining the Cosmic Distance Scale from Interferometric Measurements of the Sunyaev-Zeldovich Effect" ADS
• Giant radio halo in A2163, one of the most powerful and extended halos known (see middle figure above: contours ROSAT X-ray, grayscale VLA 20cm). Feretti et al. 2001, A&A, 373, 106. "The giant radio halo in Abell 2163" ADS
• Limits on peculiar velocity (+490^{+910}_{-730} km/s) and measurement of central SZ Compton y parameter (y_0 = 3.6\pm0.5 e-4) from observations at three millimeter-wavelength bands (2.1, 1.4, and 1.1 mm) with SuZIE at the CSO. Holzapfel et al. 1997, ApJ, 481, 35. "Limits on the Peculiar Velocities of Two Distant Clusters Using the Kinematic Sunyaev-Zeldovich Effect" ADS
• SZ decrement at 2.2 mm (peak Compton y = 4e-4) from the Caltech Submillimeter Observatory (CSO). Wilbanks et al. 1994, ApJ, 427, 75. "Measurement of the Sunyaev-Zel'dovich effect toward Abell 2163 at a wavelength of 2.2 millimeters" ADS
• Mean cluster temperature from the Ginga LAC (kT = 13 keV). Arnaud et al. 1992, ApJ, 390, 345. "A2163 - an exceptionally hot cluster of galaxies" ADS

Last updated: 3 July 2012