Chandra and FUSE View of the WHIM: the Local Group and Beyond

Details Chandra and FUSE View of the WHIM: the Local Group and Beyond Chandra and FUSE View of the WHIM: the Local Group and Beyond

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005iaus..216..297n&link_type=abstract

Maps of the Cosmos, Proceedings of IAU Symposium No. 216, held during the IAU General Assembly XXV in Sydney, Australia, 14-17 J

Astronomy and Astrophysics

Astronomy

2

Scientific paper

In this contribution, I review the current observational evidence for the existence of filaments of Warm-Hot Intergalactic Medium (WHIM). In particular, I first focus on the controversial issue of the identification of the z˜ 0 highly ionized far-ultraviolet (i.e. OVI) and X-ray (i.e. OVII, OVIII and NeIX) absorbers with either a very tenuous and diffuse WHIM filament, or with much denser condensations of material at large distances in the Galactic halo. I then present our recent detection (confidence level > 3σ) of the OVII WHIM at z > 0 and derive an estimate of the total number of baryons contained in this hard-to-detect phase of the IGM.

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