"SN2017iuk is the broad-line type Ic supernova associated to GRB 171205A, the 3rd closest GRB-SN ever detected, at a redshift of z=0.0368. Its proximity has given us the chance to perform one of the most exhaustive observing campaigns for this type of objects to date, superseding in many aspects that of the renown SN1998bw.

One of the unique datasets that we have obtained allows us to study the host galaxy in unprecedented detail. Unlike the typical dwarf galaxy in which many GRBs are found, this is a large spiral galaxy. For the first time, we have obtained a high-resolution, spatially resolved map of the host galaxy in CO with ALMA, which we can compare with optical and UV HST observations at a similar spatial resolution. Neutral hydrogen data, obtained with the GMRT telescope complete the dataset. Here I will present the host galaxy observations that are helping us to understand the peculiarities of this GRB-SN in comparison with the available datasets of similar events, both resolved and unresolved, in optical and radio wavelengths."