Abstract
MARGIE (Minute of Arc Resolution Gamma ray Imaging Experiment) is proposed to be a sensitive, large field-of-view, high angular resolution, hard X-ray/gamma ray (20-511 keV) telescope capable of observing gamma ray bursts and point sources with 〈1' resolution on a 100 day Ultra Long Duration Balloon (ULDB) mission. MARGIE will be designed to take full advantage of the weight, power, and telemetry capabilities appropriate for a ULDB mission. The current instrument design consists of five coded aperture γ-ray telescopes: a central telescope with 1892 cm 2 of detector area, 1.9' angular resolution, and 8.3° half-angle field of view (FOV); and four side-looking telescopes, each with 1945 cm 2 detector area, 3.8' resolution, and 26.1° FOV. The five γ-ray telescopes will be surrounded by 10 5 cm 2 of 1 cm thick NaI active anticoincidence shields designed both to provide shielding from background and to provide additional sensitive detector area for faint γ-ray bursts. The total instrument mass is 950 kg (science, not including NSBF electronics, ballast, etc.). The total instrument power requirement is 760 W.
Original language | English (US) |
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Pages (from-to) | 1321-1332 |
Number of pages | 12 |
Journal | Advances in Space Research |
Volume | 30 |
Issue number | 5 |
DOIs | |
State | Published - 2002 |
Externally published | Yes |
ASJC Scopus subject areas
- Aerospace Engineering
- Astronomy and Astrophysics
- Geophysics
- Atmospheric Science
- Space and Planetary Science
- General Earth and Planetary Sciences