XMM-Newton Proposal 02056801

Details XMM-Newton Proposal 02056801 XMM-Newton Proposal 02056801

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003xmm..prop..297m&link_type=abstract

XMM-Newton Proposal ID #02056801

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Q0056-363, Xmm-Newton Proposal 02056801

Scientific paper

We have retrived and analyzed the archival RGS-XMM spectrum of the QSO Q0056-363, which is located in the background of the Sculptor supercluster. In the spectrum we marginally detect (4sigma) OVII absorption features at the redshift of the intervening supercluster (z0.10), which is probably tracing Warm-Hot Intergalactic Medium (WHIM) in this large scale structure. If confirmed, the implied column density of OVII is 3e17 cm-2, i.e. one order of magnitude larger than the WHIM previously detected along other random lines of sights. We propose a 100ksec RGS observation to confirm the OVII detection, and to detect or set tight upper limits to the features of OVIII and NeIX, which would allow to constrain the properties of this "thick" WHIM at z0.10.

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