Fig. 2
Setup of the 12 NaI detectors of GBM given in the Spacecraft Coordinates (see Meegan et al. 2009). The zenith angle of the detectors in degrees is marked. This design is built in order to cover the whole visible part of the sky with the GBM. (The figure is based on Table 1. of Meegan et al. 2009. Notations “a” and “b” mean the 10th and 11th NaI detectors, respectively.)
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