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Fig. 2
Spectral points of G1.9+0.3 (this work; black circles) and RX J1713.4-3946 (red square) from Tanaka et al. (2008). The energies of the points of RX J1713.4-3946 are rescaled by the factor of the square of the ratio of shock speeds of J1713.4-3946 and G1.9+0.3: (14 000 km s-1/ 4000 km s-1)2 = 12.25.
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