AIA and ALMA light curves. Panels a–c: intensity as function of time in different AIA passbands at the three nanoflares shown in Fig. 4; the shaded areas in the 1600 Å and 1700 Å panels enclose the mean ±1σ of the (detrended) signal over a longer period of time. Panels d–f: corresponding mm brightness temperature. Panels g–i: cross-correlation functions between ALMA and AIA; one lag unit corresponds to 12 s in the EUV and 24 s in the UV.