The Wide Field X-ray Telescope Mission-A Digital Sky Survey in X-rays

Details The Wide Field X-ray Telescope Mission-A Digital Sky Survey in X-rays The Wide Field X-ray Telescope Mission-A Digital Sky Survey in X-rays

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1248..549m&link_type=abstract

X-RAY ASTRONOMY 2009; PRESENT STATUS, MULTI-WAVELENGTH APPROACH AND FUTURE PERSPECTIVES: Proceedings of the International Confer

Computer Science

Databases

2

Sky Surveys, Astronomical Telescopes, Clusters Of Galaxies, Radio, Redshift, Astronomical Catalogs, Atlases, Sky Surveys, Databases, Retrieval Systems, Archives, Etc., X- And Gamma-Ray Telescopes And Instrumentation, Galaxy Clusters, Radio Galaxies, Distances, Redshifts, Radial Velocities, Spatial Distribution Of Galaxies

Scientific paper

Sensitive surveys of the X-ray universe have been limited to small areas of the sky due to the intrinsically small field of view of Wolter-I X-ray optics. High angular resolution is needed to achieve a low background per source, minimize source confusion, and distinguish point from extended objects. WFXT consists of three co-aligned wide field X-ray telescopes with a 1° field of view and a<~10'' (goal of 5'') angular resolution (HEW) over the full field. Total effective area at 1 keV will be >5000 cm-2. WFXT will perform three extragalactic surveys that will cover most of the sky to 100-1000 times the sensitivity of the ROSAT All Sky Survey, >~2000 deg2 to deep Chandra or XMM-Newton sensitivity, and >~100 deg2 to the deepest Chandra sensitivity. WFXT will generate a legacy X-ray dataset of a half million clusters and groups of galaxies to z~2, also characterizing the physics of the intracluster gas for a significant fraction of them, thus providing an unprecedented data set for cosmological applications; it will detect >107 AGN to z>6, again obtaining spectra for a substantial fraction, to study the growth of supermassive black holes; it will detect >105 normal/starburst galaxies; and it will detect and characterize star formation regions across the Galaxy. WFXT is the only X-ray survey mission that will match, in area and sensitivity, the next generation of wide-area optical, IR and radio surveys.

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