Fig. 3.

Calculated spectrum of PSR B1259–63/LS 2883 at periastron (i.e. ϕ = 0, dashed lines) and the disc passage after periastron (i.e. ϕ = ϕd, solid lines). The Swift observational data are taken from Chernyakova et al. (2014) at 23.96 days after periastron, and the H.E.S.S. observational data are taken from the preliminary data reported by Romoli et al. (2017).
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