Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.5401g&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #54.01; Bulletin of the American Astronomical Society, V
Astronomy and Astrophysics
Astronomy
Scientific paper
The Energetic X-ray Imaging Survey Telescope (EXIST) has completed a concept study to be the Black Hole Finder Probe in NASA’s Beyond Einstein Program. EXIST would carry out an unprecedented survey for black holes in both space and time. With all-sky imaging across the hard X-ray band (3-600 keV) made possible by two very large area and wide-field coded aperture telescopes, the High Energy Telescope (see Hong et al) and Low Energy Telescope (see Kaaret et al), EXIST views the entire sky each 95min orbit and locates all detected (>5sigma) sources to <12arcsec, permitting direct idenfications. We review the primary science objectives: i) to reveal both obscured AGN and the accretion luminosity of the universe as well as dormant AGN by the their tidal disruption of stars; and ii) the birth of stellar black holes by GRBs at the highest redshifts for new constraints on Pop III stars and probes of cosmic structure. With both sensitivity and field of view 10X better/larger than Swift, EXIST would measure 30,000 AGN and 1000 GRBs per year. EXIST will continuously map the Galaxy for stellar BHs undergoing transient accretion in binaries as well as obscured young SNR (from Ti-44 emission) and novae (from 511 keV flares); the Local Group for possible IMBHs in ULX sources; and the population of magnetars undergoing superflares in galaxies out to the Coma cluster. EXIST would complement and extend greatly the survey science of GLAST, eROSSITA, LSST and LISA and provide the hard X-ray context for Con-X and XEUS. The mission technology is well developed, and both requirements and costs are understood so that it should be a strong contender for an early start in the Beyond Einstein Program. The EXIST Concept Study was supported by NASA Grant NNG04GK33G.
EXIST Team
Grindlay Jonathan E.
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