Fig. 11.
Spectral index map for SNR W49B. Top panel: spectral index fitting result of the peak of the continuum source G43.257−0.161. Middle panel: averaged image of spw-1440 and spw-1820, the white contours represent the area of the source extracted by BLOBCAT, and the cross denotes the peak of the source G43.257−0.161 in the catalog. Bottom panel: the spectral index map produced by fitting the flux of the 6 SPWs pixel by pixel. The synthesized beams of the averaged image and the spectral index map are shown in the bottom left corner of each panel.
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