Xander Tielens

Titels Prof. dr.
Initials A.G.G.M.
Main position Hoogleraar UL
Disciplines Astronomy, astrophysics
Chair Fysica en chemie van het interstellaire medium
Domain Natural Sciences and Engineering
Membership Member
Since 2012
Member of Natural Sciences and Engineering
Employed by Leiden University
Leiden Observatory
Postbus 9513
2300 RA Leiden
tel.  071 527 8465
Personal website

His research involves Polycyclic Aromatic Hydrocarbons (PAH molecules). He was one of the first people to acknowledge the importance of these molecules in the universe. In 2012, Tielens was the most cited astronomer of The Netherlands and his work lies at the basis of current research. 

Tielens’ research focuses mainly on the interstellar space and, in particular, on the PAH molecules that are found in this space. His research made a significant contribution to the field of gas that is present in the photo-dissociation regions, interstellar dust and interstellar ice. 

Tielens is also involved in the development of several satellites and telescopes including the SOFIA telescope and the European Herschel satellite.