Optimization of WHIM detection sample

Details Optimization of WHIM detection sample Optimization of WHIM detection sample

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agn8.confe..32c&link_type=abstract

Proceedings of the 8th National Conference on AGN, held in Torino, Italy, May 19-22, 2008. Edited by L. Lanteri, C.M. Raiteri,

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Cosmological simulations imply that ~50% of the baryonic matter in the Local Universe (z<0.5) resides in the filamentary Warm-Hot Intergalactic Medium (WHIM). The WHIM filaments are intrinsically difficult to detect. The most promising approach to find out the WHIM is to search for absorption features from the WHIM in X-ray and FUV in the spectra of bright background AGN. Up to now, the search for observational evidences of the WHIM has only produced statistically limited and/or highly controversial results: deep observations of well-chosen targets are required. Here we establish a handful of bright targets to be used to address cosmic variance and refine WHIM filament number density and Omega_b measurements with current X-ray and FUV spectrographs, and a larger database for deeper WHIM studies with future X-ray facilities.

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