Astronomy and Astrophysics – Astronomy
Scientific paper
May 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21822106c&link_type=abstract
American Astronomical Society, AAS Meeting #218, #221.06; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
Observations of the WHIM strongly indicate that a large percentage of the baryons in the Universe reside in a hot phase, ionized beyond the reach of ultraviolet observatories like FUSE and HST. Chandra and XMM are giving us tantalizing indications that a sufficiently powerful soft x-ray spectrograph could study these gasses in detail. The WARM Hot Intergalactic Medium Explorer is a response to that need. This presentation will explain how the WHIMex team was able to propose an x-ray spectrograph with up to 500 square centimeters of collecting area and spectral resolution of 4000 within the size and cost constraints of the Explorer program. We will present the design of WHIMex and show how the high collecting area and high resolution can enable detection of OVII and OVIII features along the lines of sight to AGNS's as distant z=0.5 and start to better constrain the models of the WHIM.
Cash Webster C. Jr.
Instrument Teams
Science Whimex
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