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Proceedings Paper

Xenia: cosmo-chemical evolution of the Universe
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Paper Abstract

Xenia is a medium-sized mission optimized to study cosmic reionization, cluster formation and evolution, and the WHIM, following cosmo-chemical evolution from the very earliest times to the present. Reconstructing the cosmic history of metals, from the first population of stars to the processes involved in the formation of galaxies and clusters of galaxies, is a key observational challenge. Most baryons reside in diffuse structures, in (proto)-galaxies and clusters of galaxies, and are predicted to trace the vast filamentary structures created by the ubiquitous Dark Matter. X-ray spectroscopy of diffuse matter has the unique capability of simultaneously probing a broad range of elements (C through Fe) in all their ionization stages and all binding states (atomic, molecular, and solid), and thus provides a model-independent survey of the metals. Xenia - proposed to the Astro2010 Decadal Survey - will combine cryogenic imaging spectrometers and wide field X-ray optics with fast repointing to collect essential information from three major tracers of metals: Gamma Ray Bursts (GRBs), Galaxy Clusters, and the Warm-Hot Intergalactic Medium (WHIM). We give an overview of the mission and discuss the instruments designed to carry out these observations.

Paper Details

Date Published: 29 July 2010
PDF: 12 pages
Proc. SPIE 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray, 77321T (29 July 2010); doi: 10.1117/12.857099
Show Author Affiliations
D. N. Burrows, The Pennsylvania State Univ. (United States)
D. Hartmann, Clemson Univ. (United States)
C. Kouvelioutou, NASA Marshall Space Flight Ctr. (United States)
L. Piro, INAF - IASF Roma (Italy)
J.-W. den Herder, SRON Netherlands Institute for Space Research (Netherlands)
T. Ohashi, Tokyo Metropolitan Univ. (Japan)

Published in SPIE Proceedings Vol. 7732:
Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray
Monique Arnaud; Stephen S. Murray; Tadayuki Takahashi, Editor(s)

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