Probing with X-rays the mass distribution in the lensing cluster A1703

Details Probing with X-rays the mass distribution in the lensing cluster A1703 Probing with X-rays the mass distribution in the lensing cluster A1703

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009xmm..prop..126g&link_type=abstract

XMM-Newton Proposal ID #06535301

Physics

Groups Of Galaxies, Clusters Of Galaxies, Supercluster, Abell 1703

Scientific paper

We propose a 52 ks observation of the lensing, X-ray luminous cluster A 1703 to constrain its total and hot gas mass profile. A 1703 is an unusually relaxed cluster at z=0.28 and provides a special opportunity to study its mass profile by applying hydrostatic equilibrium. The XMM observation will be crucial for a secure determination of its relaxed dynamical state and an accurate measurement of its mass and NFW concentration parameter, not constrained by the strong lensing analysis. Given the still debated issue of very high concentrations found for some massive lensing clusters, by obtaining high quality X-ray data for a potentially well relaxed cluster we will perform a key test for the Lambda CDM scenario of structure formation.

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