Scientific simulations and optimization of the XGIS instrument on board THESEUS

Date Issued
2020
Author(s)
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Connell, Paul H.
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Frontera, Filippo
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Gasent-Blesa, Jose L.
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Lissoni, Michele
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DOI
Abstract
The XGIS (X and Gamma Imaging Spectrometer) is one of the three instruments onboard the THESEUS mission (ESA M5, currently in Phase-A). Thanks to its wide field of view and good imaging capabilities, it will efficiently detect and localize gamma-ray bursts and other transients in the 2-150 keV sky, and also provide spectroscopy up to 10 MeV. Its current design has been optimized by means of scientific simulations based on a Monte Carlo model of the instrument coupled to a state-of-the-art description of the populations of long and short GRBs extending to high redshifts. We describe the optimization process that led to the current design of the XGIS, based on two identical units with partially overlapping fields of view, and discuss the expected performance of the instrument.
Coverage
Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray
All editors
den Herder, Jan-Willem A.; Nikzad, Shouleh; Nakazawa, Kazuhiro
Series
Volume
11444
Start page
276
Conferenece
Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray
Conferenece place
California, United States
Conferenece date
14-18 December, 2020
Uri
Url
Issn Identifier
0277-786X
Rights
open.access
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