A precessing molecular jet signaling an obscured, growing supermassive black hole in NGC 1377?

Citation:

Aalto S, Costagliola F, Muller S, Sakamoto K, Gallagher JS, Dasyra K, Wada K, Combes F, Garc{\'ıa-Burillo S, Kristensen LE, et al. A precessing molecular jet signaling an obscured, growing supermassive black hole in NGC 1377?. Astronomy & Astrophysics. 2016;590:A73.