Mapping the Intergalactic Medium in Chandra Deep Fields

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

The warm/hot intergalactic medium (WHIM) in the cosmic web may help solve the missing baryon problem. Recent observations of the cosmic X-ray background (CXB) in the Chandra Deep Fields North and South by Hickox and Markevitch (2005) compel us to revisit earlier theoretical predictions for the WHIM integrated spectrum and flux distribution. We use a new higher resolution large scale simulation which includes the effects of galactic superwind feedback to create maps which reproduce the spatial and energy resolution, and pixel selection criteria of the Chandra fields. We compare these statistically with the CXB they obtain and to predict the signature of this important baryon reservoir in the CCF of the CXB with the galaxy distribution.

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