Dark Clusters as Gravitational Lenses

Details Dark Clusters as Gravitational Lenses Dark Clusters as Gravitational Lenses

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cxo..prop...81w&link_type=abstract

Chandra Proposal ID #01800520

Physics

Chandra Proposal Id #01800520

Scientific paper

We propose to search for high (z ~ 1) redshift clusters of galaxies in the field of 5 wide-separation `dark' gravitational lens systems, which serve as indicators for the presence of massive intervening objects. The discovery and eventual determination of the space density of these objects has important consequences for cosmology, in particular for the process of structure formation in the Universe, and can serve as a discriminator between its diverse scenarios. We propose a 20 ksec exposure with ACIS-I towards each lens with the goal of establishing the presence or not of X-ray clusters of galaxies in these fields.

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