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Fig. 3


Top: X-ray spectrum of the nebula extracted from a 15–150′′ annulus region shown in Fig. 1. The astrophysical background components (dominated by thermal emission from Vela + non-thermal emission from RX J0852.0−4622) are depicted by dashed lines while the non-thermal emission of the nebula is illustrated by the solid line. Bottom: X-ray spectrum of PSR J0855 − 4644 extracted from a 15′′ radius region. The astrophysical background (dashed lines) is composed of Vela’s thermal emission at low energies while the contribution of the nebula and of RX J0852.0−4622 at higher energies is not negligible. For graphical purposes only the MOS1 and MOS2 data are shown although the PN data were also used in the fitting process.

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