EXIST's Gamma-Ray Burst Sensitivity

Abstract

We use semi-analytic techniques to evaluate the burst sensitivity of designs for the EXIST hard X-ray survey mission. Applying these techniques to the mission design proposed for the Beyond Einstein program, we find that with its very large field-of-view and faint gamma-ray burst detection threshold, EXIST will detect and localize approximately two bursts per day, a large fraction of which may be at high redshift. We estimate that EXIST's maximum sensitivity will be ~4 times greater than that of Swift's Burst Alert Telescope. Bursts will be localized to better than 40 arcsec at threshold, with a burst position as good as a few arcsec for strong bursts. EXIST's combination of three different detector systems will provide spectra from 3 keV to more than 10 MeV. Thus, EXIST will enable a major leap in the understanding of bursts, their evolution, environment, and utility as cosmological probes.

25 pages, 10 figures, accepted by ApJ

References in corpus (9)

• The collimation--corrected GRB energies correlate with the peak energy of their $\nu F_{\nu }$ spectrum
• The Ep,i - Eiso correlation in GRBs: updated observational status, re-analysis and main implications
• The Complete Spectral Catalog of Bright BATSE Gamma-Ray Bursts
• Gamma-Ray Burst Peak Duration as a Function of Energy
• Discovery of a tight correlation among the prompt emission properties of long Gamma Ray Bursts
• Post-Launch Analysis of Swift's Gamma-Ray Burst Detection Sensitivity
• A Gamma-Ray Burst Trigger Toolkit
• Using the Active Collimator and Shield Assembly of an EXIST-Type Mission as a Gamma-Ray Burst Spectrometer
• Jets, Blazars and the EBL in the GLAST-EXIST Era

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