Testing the blast-wave AGN feedback scenario in MCG-03-58-007

We report the first Atacama large millimeter/submillimeter array observations of MCG-0358-007, a local ( z = 0.03236 +/- 0.00002, this work) AGN (L-AGN similar to 10(45) erg s(-1)), hosting a powerful X-ray ultrafast ( v = 0.1c) outflow (UFO). The CO(1-0) line emission is observed across similar to 18 kpc scales with a resolution of similar to 1 kpc. About 78 per cent of the CO(1-0) luminosity traces a galaxy-size rotating disc. However, after subtracting the emission due to such rotating disc, we detect with a S/N = 20 a residual emission in the central similar to 4 kpc. Such residuals may trace a low velocity (nu(LOS) = 170 km s(-1)) outflow. We compare the momentum rate ((P) over dot) and kinetic power ((E) over dot) of such putative molecular outflow with that of the X-ray UFO and find (P) over dot(mol)/(E) over dot(UFO) similar to 0.4 and. (E) over dot(mol)/(E) over dot(UFO) similar to 4 x 10(-3). This result is at odds with the energy-conserving scenario suggested by the large momentum boosts measured in some other molecular outflows. An alternative interpretation of the residual CO emission would be a compact rotating structure, distinct from the main disc, which would be a factor of similar to 10-100 more extended and massive than typical circumnuclear discs revealed in Seyferts. In conclusion, in both scenarios, our results rule out the hypothesis of a momentum-boosted molecular outflow in this AGN, despite the presence of a powerful X-ray UFO.