Cluster-Cluster Lensing and the Case of Abell 383

Abstract

Extensive surveys of galaxy clusters motivate us to assess the likelihood of cluster-cluster lensing (CCL), namely, gravitational-lensing of a background cluster by a foreground cluster. We briefly describe the characteristics of CCLs in optical, X-ray and SZ measurements, and calculate their predicted numbers for $\Lambda$CDM parameters and a viable range of cluster mass functions and their uncertainties. The predicted number of CCLs in the strong-lensing regime varies from several ($<10$) to as high as a few dozen, depending mainly on whether lensing triaxiality bias is accounted for, through the c-M relation. A much larger number is predicted when taking into account also CCL in the weak-lensing regime. In addition to few previously suggested CCLs, we report a detection of a possible CCL in A383, where background candidate high-$z$ structures are magnified, as seen in deep Subaru observations.

9 pages, 5 figures, submitted to MNRAS

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Cited by in corpus (10)

• Cosmology and Astrophysics from Relaxed Galaxy Clusters II: Cosmological Constraints
• CLASH: Joint Analysis of Strong-Lensing, Weak-Lensing Shear and Magnification Data for 20 Galaxy Clusters
• CLASH: Complete Lensing Analysis of the Largest Cosmic Lens MACS J0717.5+3745 and Surrounding Structures
• Planck intermediate results. III. The relation between galaxy cluster mass and Sunyaev-Zeldovich signal
• LoCuSS: Hydrostatic Mass Measurements of the High-$L_X$ Cluster Sample -- Cross-calibration of Chandra and XMM-Newton
• On the Density profile slope of Clusters of Galaxies
• Galaxy Cluster Scaling Relations between Bolocam Sunyaev-Zel'dovich Effect and Chandra X-ray Measurements
• Weak lensing analysis of RXC J2248.7-4431
• A Redshift Survey of the Strong Lensing Cluster Abell 383
• A Gemini view of the galaxy cluster RXC J1504-0248: insights on the nature of the central gaseous filaments