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Physical Sciences and Mathematics Commons

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Astrophysics and Astronomy

Physics & Astronomy

Series

1987

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Full-Text Articles in Physical Sciences and Mathematics

Gamma-Ray Observations Of The Crab Region Using A Coded-Aperture Telescope, Mark L. Mcconnell, P. P. Dunphy, D J. Forrest, E. L. Chupp, A Owens Oct 1987

Gamma-Ray Observations Of The Crab Region Using A Coded-Aperture Telescope, Mark L. Mcconnell, P. P. Dunphy, D J. Forrest, E. L. Chupp, A Owens

Physics & Astronomy

The region of the Galactic anticenter, including the Crab Nebula, was observed during a balloon flight of the University of New Hampshire Directional Gamma-Ray Telescope employing the coded-aperture imaging technique to image celestial gamma-radiation between 160 keV and 9.3 MeV. The background systematics are treated with a simple and relatively straightforward correction procedure. The results demonstrate that the coded-aperture procedure is a viable approach for imaging not only point sources of radiation, but also extended sources of emission. The results for the Crab's photon spectrum are consistent with a power-law spectrum. Upper limits on the flux levels of line emission …