Minute-Of-Arc Resolution Gamma Ray Imaging Experiment - Margie
FIFTH COMPTON SYMPOSIUM(2000)
Abstract
MARGIE (Minute-of-Arc Resolution Gamma-ray Imaging Experiment) is a large area (similar to 10(4) cm(2)), wide field-of-view (similar to 1 sr), hard X-ray/gamma-ray ( similar to 20-600 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 objectives are to image faint Gamma-Ray Bursts (GRBs) in near-real-time at the low intensity (high-redshift) end of the logN-logS distribution, thereby extending the sensitivity of present observations, and to perform a wide field survey of the Galactic plane.
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Key words
gamma ray,galactic center,near real time,charged couple device,field of view,gamma ray burst,active galaxies,high resolution
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