2012 - present Professor of Experimental Astrophysics, Leiden Observatory, Leiden University, The Netherlands
2009 - 2011 Director, Sterrekundig Instituut,
Utrecht University, The Netherlands
2005 - 2011 Professor of Experimental Astrophysics, Sterrekundig Instituut,
Utrecht University, The Netherlands
2005 - 2015 Adjunct Astronomer at the National Solar Observatory,
Tucson, USA
1998 - 2005 Associate Astronomer/Tenure at the National Solar Observatory,
Tucson, USA
1995 - 1998 Associate Astronomer at the National Solar
Observatory, Tucson, USA
1994 - 1995 Research Associate at the National Solar
Observatory, Tucson, USA
1992 - 1993 Postdoctoral appointment at the Institute
of Astronomy of ETH Zürich, Switzerland
1988 - 1992 Research Assistant at the Institute of Astronomy,
ETH Zürich, Switzerland
1988
Visiting scientist at the Lockheed Laboratories for Solar and Optical Physics,
Palo Alto, California, USA
1988
Summer Research Assistant at the National Solar Observatory, Sacramento
Peak, New Mexico, USA
Education
Dr. sc. nat. ETH (PhD in Physics), 1992, ETH Zürich, Switzerland
Dipl. Phys. ETH (Masters in Physics), 1988, ETH Zürich, Switzerland
Awards
2012 Academische Jaarprijs (national award for public outreach), The Netherlands
2006 VICI Award of the Dutch Science Foundation NWO
2005 NASA Tech Brief Award
2003 Friedrich Wilhelm Bessel award of the Humboldt Foundation
2002 AURA Science Award
1999 Antarctica Service Medal of the United States of America
1994 Ludwig-Biermann-Förderpreis of the Astronomische Gesellschaft
(German Astronomical Society)
1993 Award and medal of ETH Zürich, Switzerland
1992 Donald E. Billings Award in Astro-Geophysics of the University of
Colorado at Boulder, USA
Current Professional Memberships
International Astronomical Union (IAU)
Dutch Astronomy Society (NAC)
American Astronomical Society (AAS)
Solar Physics Division of the American Astronomical Society (AAS-SPD)
American Geophysical Union (AGU)
Swiss Society for Astrophysics and Astronomy (SSAA)
Current Board and Committee Memberships
Co-Chair, Planetary and Exoplanetary Science network PEPSci, a cross-disciplinary activity of the Dutch Science Foundation (NWO) between astronomy and earth sciences
chair of the board of the Olga Koningfonds, The Netherlands
Member of the Project Science Team, European Extremely Large Telescope, ESO, the world's largest telescope with 39 meters diameter in Chile
Council member of the Origins Center, www.origins-center.nl, a Dutch cross-disciplinary initiative to understand the origin of life on Earth and in the universe
member of the board of the Isaac Newton Group of Telescopes at La Palma
Member of the Board, Europhysics News
Member of the Editorial Board, Astronomische Nachrichten
NOVA (The Netherlands Research School for Astronomy) Key Researcher, Network 2