Fig. 1.
An example of a simulated scattering angle distribution of polarized (blue) and unpolarized (brown dotted) flux as would be produced by POLAR for an off-axis GRB (170207A is taken as an example here). Both distributions show a 360° modulation induced by the off-axis incoming angle of the GRB as well as some instrument-induced effects. The polarized distribution additionally shows a 180° modulation, as well as an additional small 360° modulation induced by the polarization of the incoming flux.
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