About me


Astron16549.smallI am Senior Astronomer in the Astronomy Group at ASTRON and I am Professor of Astronomy at the Kapteyn Institute at the University of  Groningen (NL).
Read about my ERC Advanced Grant,  RadioLife, the group working with me, and the papers we have published

2014-06-02 19.23.37In 2014, I received the Honor of “Commendatore della Stella d’Italia(Commander in the Order of the Star of Italy) from the Italian Ambassador in the Netherlands, Francesco Azzarello.

My research interests: study of the gas and its role in active galactic nuclei, study of the interaction between the gas and the radio plasma, exploring the life-cycle of radio sources using low frequency observations (LOFAR). study of the gas (and in particular neutral hydrogen @ 21 cm) in the evolution of early-type galaxies.

News and recent papers: ApertifBroadHI
Archaeology of active galaxies across the electromagnetic spectrum invited review, Nature Astronomy Aug 2017
* The first extragalactic HI absorption with Apertif
* Invited review “The Many Routes to AGN Feedback
* HI absorption Workshop  ASTRON, 14-16 June 2017
* My Plenary Talk at the SPIE conference in Edinburgh


One night I was, as usual, observing the sky with my telescope. I noticed that a sign was hanging from a galaxy a hundred milion light-years away. On it was written: I SAW YOU.

I. Calvino “Cosmicomics”