invited stays  
July 2018
2-week stay at the London Mathematical Laboratory supervising a student for a summer school project
July 2017
2-week stay at the MPIPKS Dresden during an international workshop
July/Aug. 2016
3-week stay at the Kavli Institute for Theoretical Physics China, Beijing
Jan. - June 2016
6-month stay at the MPIPKS Dresden as a guest scientist
July - Dec. 2015
6-month stay at the MPIPKS Dresden as convenor of an Advanced Study Group
June/July 2014
3-week stay at the MPIPKS Dresden (Dr. Friedrich, Prof. Kantz)
April 2014 3-week stay at the MPIPKS Dresden (Dr. Watkins, Prof. Kantz)
Oct./Nov. 2013 4-week stay at the Newton Institute, Cambridge (Visiting Research Fellow of International Programme Mathematics for the Fluid Earth)
April 2009 2-week stay at the MPIPKS Dresden (Prof. Kantz)
Feb. 2008 2-day Physics and Life Science Interface workshop, University of Warwick, UK (upon invitation only)
April/June 2007 two 1-week stays at the MPIPKS Dresden (Profs. Kantz, Juelicher)
Sept./Dec. 2006 two 1-week stays at the MPIPKS Dresden (Prof. Fulde)
May/June 2005 1-week stay at the Instituto Pluridisciplinar, Universidad Complutense de Madrid (Prof. Velarde)
Feb. 2001 1-week stay at the Universite Libre de Bruxelles (Prof. Nicolis)
March 2000 1 1/2-week stay at the IPST, USA (Profs. Dorfman)
Nov. 1999 1-week stay at the University of Utrecht (Prof. van Beijeren)
Jan. 1997 4-week stay at the TU Berlin (Prof.\ S.Hess)
Sept. 1996 1-week stay at the Eoetvoes University, Budapest (Prof. Tel)
1994/95 three 3-week stays at the IPST, USA (Prof. Dorfman)
April 1994 short stay at the University of Utrecht (Profs. Ernst and Dorfman)