Medium (2-6 weeks) and long term (more than 6 weeks) visitors:

Dan Scolnic, Duke
Host: Samaya Nissanke, Daniel Baumann, Alessandra Silvestri. From 16-11-19 till 29-11-19

Gilles Louppes & Antoine Wehenkel, University Liege
host: Christoph Weniger. From 18-11-19 till 22-11-19

Neal Dalal, Perimeter Institute
Host: Samaya Nissanke and Alessandra Silvestri. From 08-11-19 till 20-11-19

Mark Görbig, Universite Paris Sud
Host: Lars Fritz/Cristiane de Morais Smith. From 27-10-19 till 08-11-19

Gordon Baym, USA, Urbana-Champaign
Host: Samaya Nissanke andTanja Hinderer. From 26-10-19 till 01-11-19

Eduardo Marino, Rio de Janeiro
Host: Cristiane Morais Smith. From 13-09-19 till 30-09-19

Kirill Shtengel, University of California, Riverside
Host: Larz Fritz. From 17-07-19 till 05-08-19

Anthony Piro, Carnegie Observatories
Host: Samaya Nissanke, Tanja Hinderer. From 16-06-19 till 01-07-19

Gary Shiu, Madison, USA
Host: Jan Pieter van der Schaar. From 14-06-19 till 07-07-19

Anatoly Polkovnikov, Boston University
Host: Vladimir Gritsev. From 01-04-19 till 10-07-19

José Ignacio Latorre, University of Barcelona
Host: Kareljan Schoutens. From 01-03-19 till 31-05-19

James Bonifacio, Case Western Reserve University
Host: Daniel Baumann. From 10-03-19 till 24-03-19

Austin Joyce, Columbia University
Host: Daniel Baumann. From 10-03-19 till 24-03-19

Johanna Erdmenger, University of Wuerzburg
Host: Jan de Boer. From 02-09-19 till 13-09-19

Inanc Adagideli, Sabanci University, Istanbul
Host: Carlo Beenakker. from 15-01-19 till 15-07-19     

Isaac Perez Castillo, UNAM Mexico
Host: Jean-Sébastien Caux. From 07-01-19 till 25-01-19

Visiting PhD Students

Abhinava Danish, IIT Hyderabad
Host: Eric Laenen. From 01-11-19 till 20-12-19

Sourav Pal, IIT Hyderabad
Host: Eric Laenen. From 01-11-19 till 20-12-19

Alex Cole, University of Wisconsin, Madison, USA
Host: Jan Pieter van der Schaar. From 04-11-19 till 20-12-19

Fabrizio Renzi, Italy, Rome, La Sapienza
Host: A. Silvestri and S. Nissanke. From 21-04-19 till 21-07-19

Iman Mahyaeh , Stockholm University 
Host: Dirk Schuricht. From 01-04-19 till 31-05-19 

Laura Johnson, Case Western Reserve University
Host: Daniel Baumann. From 10-03-19 till 24-03-19