A peculiar linear radio feature in the supernova remnant N206

We present images of the supernova remnant N206 in the Large Magellanic Cloud taken with the Australia Telescope Compact Array at wavelengths of 3 and 6 cm. Based on our data and previously published flux densities, the spectral index of N206 is -0.20 ± 0.07. The 6 cm radio morphology shows a filled center. Most interesting is the discovery of a peculiar linear feature previously undetected at any wavelength. The feature lies to the east of the center of the remnant, stretching from about 1/4 to 3/4 of the remnant's radius. It is wedge-shaped, with a steady opening angle from an apex on the eastern side. The feature resembles the disturbance expected from an object moving through the material supersonically at about 800 km s^-1. We present arguments suggesting that the linear feature might have been produced by a low-mass star or compact object ejected from a binary system that may have led to a Type Ic supernova.