Monitoring the Low-Energy Gamma-Ray Sky Using Earth Occultation with GLAST GBM

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Abstract
Long term all‐sky monitoring of the 20 keV – 2 MeV gamma‐ray sky using the Earth occultation technique was demonstrated by the BATSE instrument on the Compton Gamma Ray Observatory. The principles and techniques used for the development of an end‐to‐end earth occultation data analysis system for BATSE can be extended to the GLAST Burst Monitor (GBM), resulting in multiband light curves and time‐resolved spectra in the energy range 8 keV to above 1 MeV for known gamma‐ray sources and transient outbursts, as well as the discovery of new sources of gamma‐ray emission. In this paper we describe the application of the technique to the GBM. We also present the expected sensitivity for the GBM.

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