Friedrich-Karl "Friedel“ Thielemann (born 17 April 1951 in Mülheim an der Ruhr) is a German-Swiss theoretical astrophysicist. Thielemann studied at the TH Darmstadt, where he in 1976 he acquired his Diplom. In 1980 he earned his PhD under Wolfgang Hillebrandt (in Garching) and E. R. Hilf in nuclear astrophysics. As a post-doc he was with David Schramm and

William David Arnett William David Arnett (born 1940) is a Regents Professor of Astrophysics at Steward Observatory, University of Arizona, known for his research on supernova explosions, the formation of neutron stars or black holes by gravitational collapse, and ...

at the

University of Chicago The University of Chicago (UChicago, Chicago, U of C, or UChi) is a private university, private research university in Chicago, Illinois. Its main campus is located in Chicago's Hyde Park, Chicago, Hyde Park neighborhood. The University of Chic ...

William A. Fowler William Alfred Fowler ( ) was an American nuclear physicist, later astrophysicist, who, with Subrahmanyan Chandrasekhar, won the 1983 Nobel Prize in Physics. He is known for his theoretical and experimental research into nuclear reactions wit ...

Caltech The California Institute of Technology (branded as Caltech or CIT)The university itself only spells its short form as "Caltech"; the institution considers other spellings such a"Cal Tech" and "CalTech" incorrect. The institute is also occasional ...

, Hans Klapdor at the

Max-Planck-Institut für Kernphysik The Max-Planck-Institut für Kernphysik ("MPI for Nuclear Physics" or MPIK for short) is a research institute in Heidelberg, Germany. The institute is one of the 80 institutes of the Max-Planck-Gesellschaft (Max Planck Society), an independent, n ...

, am Max-Planck-Institut für Astrophysik in Garching (with Hillebrandt) and at the

University of Illinois The University of Illinois Urbana-Champaign (U of I, Illinois, University of Illinois, or UIUC) is a public land-grant research university in Illinois in the twin cities of Champaign and Urbana. It is the flagship institution of the Univer ...

(with

James W. Truran James Wellington Truran Jr. (born July 12, 1940, Brewster, New York – March 5, 2022) was an American physicist, known for his research in nuclear astrophysics. Biography Truran graduated in 1961 with a bachelor's degree from Cornell University. ...

). Starting in 1986 he was Assistant Professor and from 1991 Associate Professor at the Center for Astrophysics Harvard & Smithsonian and at the Harvard Observatory of

Harvard University Harvard University is a private Ivy League research university in Cambridge, Massachusetts. Founded in 1636 as Harvard College and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of high ...

. In 1994 he became a professor at the

University of Basel The University of Basel (Latin: ''Universitas Basiliensis'', German: ''Universität Basel'') is a university in Basel, Switzerland. Founded on 4 April 1460, it is Switzerland's oldest university and among the world's oldest surviving universit ...

. In 1995 he was a guest professor at the

University of Turin The University of Turin (Italian language, Italian: ''Università degli Studi di Torino'', UNITO) is a public university, public research university in the city of Turin, in the Piedmont (Italy), Piedmont region of Italy. It is one of the List ...

and from 1997 to 2001 a guest scientist at

Oak Ridge National Laboratory Oak Ridge National Laboratory (ORNL) is a U.S. multiprogram science and technology national laboratory sponsored by the U.S. Department of Energy (DOE) and administered, managed, and operated by UT–Battelle as a federally funded research an ...

. 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 the

Otto Hahn Medal The Otto Hahn Medal (german: Otto-Hahn-Medaille) is awarded by the Max Planck Society to young scientists and researchers in both the natural and social sciences. The award takes its name from the German chemist and Nobel Prize laureate Otto Hahn ...

. In 1998 he was elected a fellow of the American 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." In 2008 he received the

Hans Bethe Prize The Hans A. Bethe Prize, is presented annually by the American Physical Society. The prize honors outstanding work in theory, experiment or observation in the areas of astrophysics, nuclear physics, nuclear astrophysics, or closely related fields ...

"for his many outstanding theoretical contributions to the understanding of

nucleosynthesis Nucleosynthesis is the process that creates new atomic nuclei from pre-existing nucleons (protons and neutrons) and nuclei. According to current theories, the first nuclei were formed a few minutes after the Big Bang, through nuclear reactions in ...

, stellar evolution and stellar explosions."Laudatio from the Bethe Prize
/ref> Since 2004 he is a member of the Swiss Research Council.

References

External links

* {{DEFAULTSORT:Thielemann, Friedrich Karl 20th-century German physicists Swiss astrophysicists 1951 births Living people Fellows of the American Physical Society Theoretical physicists 21st-century German physicists