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Fig. 9

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Grey-scale image (in mJy beam−1) corresponding to the radio continuum emission from the shell of G46.8–0.3 overlaid with the 12CO (J = 1–0) line emission from Regions A (in cyan, Δυ = 10–30 km s−1, levels: 40, 70, 100 K km s−1) and B (in yellow, Δυ = 30–50 km s−1, levels: 55, 80, 105 K km s−1) around the SNR. The velocity range of the plotted clouds is the same as in Fig. 7. The plus symbol and ellipses illustrate the best localisation and the 95%/68% confidence contours of the γ-ray emission detected by Fermi-LAT. The enclosed molecular areas corresponding to the A-10N, B-8E, and B-9C clouds were used in Sect. 6 to calculate the total proton content.

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