Non-Thermal 13cm Emission in the SMC

M. Filipovic, L. Staveley-Smith, C. Danforth, et al. in prep.

Four regions were investigated. The left hand image in each case shows the difference image of 13cm - scaled, smoothed Halpha. Scaling is somewhat approximate, but it will do for a first look. The right-hand image shows the Halpha view (continuum-subtracted in some cases) with the overlain difference image contours.

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NGC346/N66 region: Brightest radio object is SNR 0057-7226. To the SW lies the fainter SNR 0056-7223.

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The southwestern end of the SMC bar. Three plausible SNRs are seen: from west to east, N19, DEM S42 (N24), and something DEM S52 which shows a definite ring structure but has no obvious optical counterpart.

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The N76 region at the NE end of the SMC Bar. The brightest remnant in the field is E0102. N78 (DEM S126) is the optically bright knot east of E0102. Note the optical filaments corresponding to the southwestern SNR 0101-72.4. The SNR DEM S128 is the faint contour in the south east. The bright, dumbell-shaped SNR 1040-72.3, visible in the optical image in the center-east, is invisible in the radio.

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The interesting, fragmented N83/84/85 region in the SMC Wing. Several bright point and extended sources are seen.