Design and scientific performance of the soft x-ray imager on board EXIST

Lorenzo Natalucci; Gianpiero Tagliaferri; Angela Bazzano; Patrizia Caraveo; Roberto Della Ceca; Jonathan E. Grindlay; Giovanni Pareschi; Brian D. Ramsey; Pietro Ubertini; Michela C. A. Uslenghi

doi:10.1117/12.857386

30 July 2010 Design and scientific performance of the soft x-ray imager on board EXIST

Lorenzo Natalucci, Gianpiero Tagliaferri, Angela Bazzano, Patrizia Caraveo, Roberto Della Ceca, Jonathan E. Grindlay, Giovanni Pareschi, Brian D. Ramsey, Pietro Ubertini, Michela C. A. Uslenghi

Author Affiliations +

Proceedings Volume 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray; 77321Z (2010) https://doi.org/10.1117/12.857386
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

The EXIST mission has been recently re-designed prior to being proposed to the ASTRO2010 Decadal Survey. One of the most recent improvements has been the addition of a third instrument consisting of a powerful Soft X-ray Imager (SXI) that will study in detail and help characterizing the high energy sources detected by the High Energy Telescope (HET). The EXIST concept fully exploits the heritage of Swift in the fast follow-up of transients and in particular GRBs, with 10 to 20 times more sensitivity in the high energy band (from 0.2 to 600 keV) and exceptional performance in the near-IR/optical provided by the Infrared Telescope (IRT). SXI has an important role in extending by more than one decade in energy, down to the soft X-rays the coverage of HET. Such combination will be fully exploited when performing pointed observations. Within the EXIST follow-up program, foreseen during the second part of the mission, SXI and HET will be able to collect high quality spectra for thousands of sources covering the energy range 0.1- hundreds keV. Furthermore, while working in survey mode SXI will cover about half the sky in 2 years and will be able to improve the location accuracy of many faint HET sources (reducing the positional uncertainty from 20 arcsec to ~ 1-2 arcsec). In this paper we will address the performance and the main scientific contributions expected from SXI.

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Lorenzo Natalucci, Gianpiero Tagliaferri, Angela Bazzano, Patrizia Caraveo, Roberto Della Ceca, Jonathan E. Grindlay, Giovanni Pareschi, Brian D. Ramsey, Pietro Ubertini, and Michela C. A. Uslenghi "Design and scientific performance of the soft x-ray imager on board EXIST", Proc. SPIE 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray, 77321Z (30 July 2010); https://doi.org/10.1117/12.857386

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