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2005A&A...434..801Z - Astronomy and Astrophysics, volume 434, 801-809 (2005/5-2)
Constraining the thermal history of the warm-hot intergalactic medium.
ZAPPACOSTA L., MAIOLINO R., FINOGUENOV A., MANNUCCI F., GILLI R. and FERRARA A.
Abstract (from CDS):
We have identified a large-scale structure traced by galaxies at z=0.8, within the Lockman Hole, by means of multi-object spectroscopic observations. By using deep XMM images we have investigated the soft X-ray emission from the Warm-Hot Intergalactic Medium (WHIM) expected to be associated with this large-scale structure and we set a tight upper limit to its flux in the very soft 0.2-0.4keV band. The non-detection requires the WHIM at these redshifts to be cooler than 0.1keV. Combined with the WHIM emission detections at lower redshift, our result indicates that the WHIM temperature rapidly decreases with redshift, as expected in popular cosmological models.
Abstract Copyright: ∼
Journal keyword(s): cosmology: large-scale structure of Universe - X-rays: diffuse background - galaxies: intergalactic medium - galaxies: distances and redshifts
VizieR on-line data: <Available at CDS (J/A+A/434/801): catalog.dat>
Nomenclature: Appendix A: [ZMF2005] NNN (Nos 1-103).
Simbad objects: 123
