Top row: continuum images of SN 1987A in ALMA Bands 3, 6, 7, and 9 (2.8 mm, 1.4 mm, 870 μm and 450 μm respectively). The spatial resolution is marked by dark blue ovals. In Band 9 it is 0.33 × 0 25, 15% of the diameter of the equatorial ring. At Bands 7, 6, and 3 the beams are 0.69 × 0 42, 0.83 × 0 61, and 1.56 × 1 12, respectively. At long wavelengths, the emission is a torus associated with the supernova shock wave; shorter wavelengths are dominated by the inner supernova ejecta. The bottom row shows images of the continuum at 6.8 mm imaged with the Australia Telescope Compact Array (ATCA; Zanardo et al. 2013, 0 25 beam), the hydrogen Hα line imaged with the Hubble Space Telescope ( HST; Image courtesy of R. Kirshner and the SAINTS collaboration; see also Larsson et al. 2013), and the soft X-ray emission imaged with the Chandra X-Ray Observatory (Helder et al. 2013).