Hard X-Ray All-Sky Imaging with BATSE/CGRO

Details Hard X-Ray All-Sky Imaging with BATSE/CGRO Hard X-Ray All-Sky Imaging with BATSE/CGRO

Dec 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995exa.....6...57z&link_type=abstract

Experimental Astronomy, Volume 6, Issue 4, pp.57-62

Astronomy and Astrophysics

Astronomy

7

&Gamma, -Rays, Imaging-Earth Occultation, Radon Transform, Maximum Entropy

Scientific paper

The large Area Detectors (LADs) of the BATSE experiment aboard the Compton Gamma-ray Observatory have been used recently as the first hard X-ray all-sky imager at energies between 20 keV and 300 keV. The Earth occultation process is formulated in terms of a curved Radon transform convoluted by a step transform in a selected field of view (FOV) ranging from 5°×5° to 40°×40°. The Maximum Entropy Method is then used to reconstruct an image in the hard X-ray sky. Multiple images of different regions of the sky can be produced simultaneously. A source location accuracy of 0.1° for strong sources and a sensitivity limit of 100 mCrab have been achieved in an one-day integration period.

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