Fig. 2
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Schematic of Compton Data Space (Kierans 2018). The left panel shows a photon scattering in a detector with the scattering angle ϕ and the scattered gamma-ray direction (ψ, χ). The source position (ψ0, χ0) and photon interaction points are shown. Photons from this source make a cone with a 90° opening angle in the CDS, as shown on the right panel. The apex of the cone corresponds to the source location.
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