SIMBAD references

2016MNRAS.457..764D - Mon. Not. R. Astron. Soc., 457, 764-785 (2016/March-3)

Cluster mass profile reconstruction with size and flux magnification on the HST STAGES survey.

DUNCAN C.A.J., HEYMANS C., HEAVENS A.F. and JOACHIMI B.

Abstract (from CDS):

We present the first measurement of individual cluster mass estimates using weak lensing size and flux magnification. Using data from the HST STAGES (Space Telescope A901/902 Galaxy Evolution Survey) survey of the A901/902 supercluster we detect the four known groups in the supercluster at high significance using magnification alone. We discuss the application of a fully Bayesian inference analysis, and investigate a broad range of potential systematics in the application of the method. We compare our results to a previous weak lensing shear analysis of the same field finding the recovered signal-to-noise of our magnification-only analysis to range from 45 to 110 per cent of the signal-to-noise in the shear-only analysis. On a case-by-case basis we find consistent magnification and shear constraints on cluster virial radius, and finding that for the full sample, magnification constraints to be a factor 0.77 ± 0.18 lower than the shear measurements.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): gravitational lensing: weak - methods: data analysis - galaxies: clusters: general - dark matter

Status at CDS:  

Simbad objects: 7

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2020.04.08-14:59:40

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