EXIST: A high sensitivity hard x-ray imaging sky survey mission for ISS

Grindlay, J.; Bildsten, L.; Chakrabarty, D.; Elvis, M.; Fabian, A.; Fiore, F.; Gehrels, N.; Hailey, C.; Harrison, F.; Hartmann, D.; Prince, T.; Ramsey, B.; Rothschild, R.; Skinner, G.; Woosley, S.
April 2000
AIP Conference Proceedings;2000, Vol. 510 Issue 1, p784
Academic Journal
A deep all-sky imaging hard x-ray survey and wide-field monitor is needed to extend soft (ROSAT) and medium (ABRIXAS2) x-ray surveys into the 10–100 keV band at comparable sensitivity (∼0.05 mCrab). This would enable discovery and study of >=3000 obscured AGN, which probably dominate the hard x-ray background; detailed study of spectra and variability of accreting black holes and a census of BHs in the Galaxy; Gamma-ray bursts and associated massive star formation (PopIII) at very high redshift and Soft Gamma-ray Repeaters throughout the Local Group; and a full galactic survey for obscured supernova remnants. The Energetic X-ray Imaging Survey Telescope (EXIST) is a proposed array of 8×1 m[sup 2] coded aperture telescopes fixed on the International Space Station (ISS) with 160°×40° field of view which images the full sky each 90 min orbit. EXIST has been included in the most recent NASA Strategic Plan as a candidate mission for the next decade. An overview of the science goals and mission concept is presented. © 2000 American Institute of Physics.


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