J herringbones and their location relative to the CME. (a) Dynamic spectrum showing a group of forward-drifting herringbones with inverted J shapes. (b) CME in EUV running difference images from SDO/AIA in the 211 Å wavelength together with contours of the radio sources at two frequencies: 228 (green) and 270 MHz (yellow). The 228 MHz contours correspond to the tip of a J herringbone.