Peering Through the Sheets: Characterizing the WHIM

Details Peering Through the Sheets: Characterizing the WHIM Peering Through the Sheets: Characterizing the WHIM

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004head....8.0223p&link_type=abstract

American Astronomical Society, HEAD meeting #8, #02.23; Bulletin of the American Astronomical Society, Vol. 36, p.906

Astronomy and Astrophysics

Astronomy

Scientific paper

We present an new algorithm to ferret out and extract structures in large scale simulations. It is used to cull a well-defined sample of sheets, filaments and groups from simulations in order to study the warm/hot intergalactic medium (WHIM). The entropy, density profile and temperature distribution of the gas in these structures are obtained. We describe the predicted temperature-density phase diagram for the intergalactic medium and derive an `equation of state' for the WHIM. In order to obtain a better understanding of the physical properties and extent of the WHIM, we progress beyond a threshold-based definition of this component to look at the topology and geometry of this potentially substantial baryon reservoir.

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