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Friedrich-Karl "Friedel“ Thielemann (born 17 April 1951 inMülheim an der Ruhr) is a German-Swiss theoretical astrophysicist.
Thielemann studied at theTH Darmstadt, where he in 1976 he acquired hisDiplom. In 1980 he earned his PhD under Wolfgang Hillebrandt (in Garching) and E. R. Hilf in nuclear astrophysics. As a post-doc he was withDavid Schramm andWilliam David Arnett at theUniversity of Chicago,William A. Fowler atCaltech, Hans Klapdor at theMax-Planck-Institut für Kernphysik, amMax-Planck-Institut für Astrophysik in Garching (with Hillebrandt) and at theUniversity of Illinois (withJames W. Truran). Starting in 1986 he was Assistant Professor and from 1991 Associate Professor at theCenter for Astrophysics | Harvard & Smithsonian and at the Harvard Observatory ofHarvard University. In 1994 he became a professor at theUniversity of Basel. In 1995 he was a guest professor at theUniversity of Turin and from 1997 to 2001 a guest scientist atOak Ridge National Laboratory.
Besides theoretical and computer-simulated astrophysics and nuclear astrophysics (including important nuclear reactions and properties of unstable stellar cores, equations of state of quark-matter and core matter of higher density), he worked on the modeling of astrophysical plasmas for important subatomic processes. He investigated, among other things, supernovae, X-ray bursts, gamma ray bursts, fusion of neutron stars, emergence of heavy elements, and evolution of chemical elements in galaxies.
In 1979 he received theOtto Hahn Medal. In 1998 he was elected a fellow of theAmerican Physical Society for "his work at the interface of nuclear physics and astrophysics and the applications to stellar nucleosynthesis, Type Ia and Type II Supernovae, as well as the r- and rp-process."[1] In 2008 he received theHans Bethe Prize "for his many outstanding theoretical contributions to the understanding ofnucleosynthesis,stellar evolution and stellar explosions."[2] Since 2004 he is a member of the Swiss Research Council.
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