Minute-of-Arc Resolution Gamma ray Imaging Experiment -- MARGIE

Details Minute-of-Arc Resolution Gamma ray Imaging Experiment -- MARGIE Minute-of-Arc Resolution Gamma ray Imaging Experiment -- MARGIE

Apr 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999head....4.2608a&link_type=abstract

American Astronomical Society, HEAD meeting #4, #26.08; Bulletin of the American Astronomical Society, Vol. 31, p.728

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MARGIE (Minute-of-Arc Resolution Gamma-ray Imaging Experiment) is a large area ( ~ 10(4) cm(2) ), wide field-of-view ( ~ 1 sr), hard X-ray/gamma-ray ( ~ 20--500 keV) coded-mask imaging telescope capable of performing a sensitive survey of both steady and transient cosmic sources. MARGIE has been selected for a NASA mission-concept study for an Ultra Long Duration (100 day) Balloon flight. We describe our program to develop the instrument based on new detector technology of either cadmium-zinc-telluride (CZT) semiconductors or pixellated cesium iodide (CsI) scintillators viewed by fast-timing bi-directional charge-coupled devices (CCDs). The primary scientific objective is to image faint Gamma-Ray Bursts (GRB) in near-real-time at the low intensity end (high-redshift) of the logN--logS distribution, thereby extending the sensitivity of present observations. Other high-priority scientific goals include a wide field survey of the Galactic center, mapping the distribution of the Galactic 511 keV emission and performing high-resolution spectral and temporal studies of active galaxies.

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