Gamma-Ray All Sky Imaging with BATSE

2004/08/23 by A. B. Hill, Hill, A. B., E. J. Barlow +13
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #astro-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/0408406

4 pages, 4 figures. Proceedings of the 5th INTEGRAL Workshop, Munich 16-20 February 2004. ESA SP-552

arxiv created 2004/08/23 · arxiv updated 2009/12/01

Abstract

The BATSE mission aboard CGRO observed the whole sky for 9 years in the 20 keV - 2 MeV energy band. Flat-fielding of the temporal variations in the background present in the data set has been accomplished through a GEANT3 Monte-Carlo simulation - the BATSE Mass Model (BAMM). The Earth Occultation technique (EOT) is used together with a maximum-likelihood imaging approach to construct all-sky maps with ~mCrab sensitivity. Additionally, a non-linear CLEAN algorithm is applied to the all-sky maps to remove large artefacts that are systematic of the EOT. The latest survey results produced through the application of this technique to a subset of the BATSE data set are presented.

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