Phase ranges off-periastron (upper), pre-periastron (middle) and periastron (lower) SEDs. Black data points represent the points from our Fermi-LAT analysis (Sect. 2.4); olive points show data from NuSTAR (Hamaguchi et al. 2018). The black solid line shows the total emission from our model with absorption. The black dashed line shows the same without absorption. Blue lines show the emission from electrons, green lines indicate the contribution from secondary particles, and red lines from protons of η Car A (bold) and η Car B (thin). In the upper plot (phase 0.1–0.9) upper limits from H.E.S.S. were added in grey (Abramowski et al. 2012).
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