XMM-Newton Proposal 02046301

Details XMM-Newton Proposal 02046301 XMM-Newton Proposal 02046301

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003xmm..prop..245i&link_type=abstract

XMM-Newton Proposal ID #02046301

Mathematics

Logic

2Qz J1435+0008, Xmm-Newton Proposal 02046301

Scientific paper

We propose deep XMM imaging of a system of two QSOs separated by 33 arcseconds at z2.4, that is likely the most widely separated gravitational lens known. The evidence of lensing is (1) the overall similarity of the optical spectra, (2) the almost identical Lyman-alpha forest near the emission redshift, and (3) the presence of a bright galaxy near the implied lensing mass center. The 15 ks integration time is designed to easily detect a cluster of the mass implied by a lens model at the most probable redshift (z0.44) and marginally detect a cluster at the highest plausible redshift (z1). The X-ray properties of this first ever mass-selected cluster are of interest, and the confirmation of even a single lens of this separation leads to significant cosmological constraints.

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