Quest for the WHIM in the filament connecting the pair of clusters A222 and A223

Details Quest for the WHIM in the filament connecting the pair of clusters A222 and A223 Quest for the WHIM in the filament connecting the pair of clusters A222 and A223

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006xmm..prop...69w&link_type=abstract

XMM-Newton Proposal ID #05020202

Physics

Groups Of Galaxies, Clusters Of Galaxies, Supercluster, Abell 222/223, Abell 222/223, Xmm-Newton Proposal 05020202

Scientific paper

We propose to observe the pair of rich clusters of galaxies A 222/223 at a redshift of z=0.21, to investigate the physical properties of the warm-hot intergalactic medium (WHIM) bridge, which physically connects both clusters. We will determine its temperature and put constraints on its oxygen abundance and density. As a diagnostic tool we will use the OVII line emission, which is formed at the temperatures expected to occur in filaments between two massive clusters. The high redshift, a relatively high density of the WHIM in the bridge connecting the two clusters and the orientation of the filament approximately along our line of sight make A 222/223 one of the most promising targets to unambiguously detect the WHIM for the first time in emission.

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