
Proceedings Paper
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Paper Abstract
The Energetic X-ray Imaging Survey Telescope (EXIST) is a proposed next generation multi-wavelength survey
mission. The primary instrument is a High Energy telescope (HET) that conducts the deepest survey for Gamma-ray
Bursts (GRBs), obscured-accreting and dormant Supermassive Black Holes and Transients of all varieties for immediate
followup studies by the two secondary instruments: a Soft X-ray Imager (SXI) and an Optical/Infrared Telescope (IRT).
EXIST will explore the early Universe using high redshift GRBs as cosmic probes and survey black holes on all scales.
The HET is a coded aperture telescope employing a large array of imaging CZT detectors (4.5 m2, 0.6 mm pixel) and a
hybrid Tungsten mask. We review the current HET concept which follows an intensive design revision by the HET
imaging working group and the recent engineering studies in the Instrument and Mission Design Lab at the Goddard
Space Flight Center. The HET will locate GRBs and transients quickly (<10-30 sec) and accurately (< 20") for rapid
(< 1-3 min) onboard followup soft X-ray and optical/IR (0.3-2.2 μm) imaging and spectroscopy. The broad energy
band (5-600 keV) and the wide field of view (~90º × 70º at 10% coding fraction) are optimal for capturing GRBs,
obscured AGNs and rare transients. The continuous scan of the entire sky every 3 hours will establish a finely-sampled
long-term history of many X-ray sources, opening up new possibilities for variability studies.
Paper Details
Date Published: 2 September 2009
PDF: 10 pages
Proc. SPIE 7435, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVI, 74350A (2 September 2009); doi: 10.1117/12.826540
Published in SPIE Proceedings Vol. 7435:
UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVI
Oswald H. Siegmund, Editor(s)
PDF: 10 pages
Proc. SPIE 7435, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVI, 74350A (2 September 2009); doi: 10.1117/12.826540
Show Author Affiliations
J. Hong, Harvard-Smithsonian Ctr. for Astrophysics (United States)
J. E. Grindlay, Harvard-Smithsonian Ctr. for Astrophysics (United States)
B. Allen, Harvard-Smithsonian Ctr. for Astrophysics (United States)
J. E. Grindlay, Harvard-Smithsonian Ctr. for Astrophysics (United States)
B. Allen, Harvard-Smithsonian Ctr. for Astrophysics (United States)
S. D. Barthelmy, NASA Goddard Space Flight Ctr. (United States)
G. K. Skinner, NASA Goddard Space Flight Ctr. (United States)
N. Gehrels, NASA Goddard Space Flight Ctr. (United States)
G. K. Skinner, NASA Goddard Space Flight Ctr. (United States)
N. Gehrels, NASA Goddard Space Flight Ctr. (United States)
Published in SPIE Proceedings Vol. 7435:
UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVI
Oswald H. Siegmund, Editor(s)
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