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Fig. 3

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The optical image of the 8 o’clock arc lens system with the radio contours of the 1.4 GHz observations overlayed. The contours are shown at (−3,3,6,12,24)  ×  36   μJy as in Fig. 1a. No radio emission from the arc is detected above the 3σ confidence contours. The four lensed images are labelled a1, a2, a3 (arc) and a4 (counter image). The lensing galaxy is labelled lrg.

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