Rainer K. Sachs

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Rainer Kurt "Ray" Sachs (born June 13, 1932 in Frankfurt am Main ) is an American astrophysicist of German origin and co-discoverer of the Sachs-Wolfe effect .

Life

Sachs came to the United States in 1937, did his bachelor's degree at MIT in 1953, and received his doctorate in 1958 from Syracuse University in gravitation theory with Peter Bergmann (The structure of particles in linearized gravitational theory). As a post-doctoral student he was at the University of Hamburg in 1959/60 and at the University of London in 1960/61 . In 1962 he became an assistant professor at the Stevens Institute of Technology and in 1963 an associate professor and then a professor at the University of Texas . From 1969 he was a professor at the University of California, Berkeley .

In 1962 he and Joshua Goldberg proved the Goldberg-Sachs theorem, which deduces special algebraic properties of the Weyl tensor from the existence of geodetic and shear-free zero-congruences. The Ehlers-Geren-Sachs Theorem in Cosmology from 1968 is named after him, P. Geren and Jürgen Ehlers .

Until 1985 he worked in the fields of relativistic cosmology and astrophysics . He then devoted himself to mathematical and computer-aided biology , especially radiation biology.

Publications

  • with Pascual Jordan and Jürgen Ehlers : Contributions to the theory of pure gravitational radiation. Publishing house of the Academy of Sciences and Literature, Mainz 1961.
  • as editor: General Relativity and Cosmology (Italian Physical Society). Academic Press, 1971.
  • with Arthur M. Wolfe : Perturbations of a cosmological model and angular variations of the microwave background. In: Astrophysical Journal. Volume 147, 1967, pp. 73-90.
  • with Joshua Goldberg: A theorem on Petrov types. In: Acta Physica Polonica. Volume 22 (Supplement), 1962, p. 13.
    • Reprinted in George FR Ellis , Malcolm AH MacCallum and Andrzej Krasinski (eds.): Golden Oldies in General Relativity. Hidden Gems. Springer, 2013.
  • with Hung-Hsi Wu: General Relativity for Mathematicians. Springer, New York / Heidelberg / Berlin 1977, ISBN 3-540-90218-X .
  • with H. Wu: General relativity and cosmology . In: Bulletin AMS. Volume 83, 1977, pp. 1101-1164.

Web links

  • Ray Sachs on the University of California, Berkeley website (with CV )

Footnotes

  1. ↑ Career data based on American Men and Women of Science , Thomson Gale 2004.
  2. ^ Mathematics Genealogy Project. In: genealogy.math.ndsu.nodak.edu . (English).
personal data
SURNAME Sachs, Rainer K.
ALTERNATIVE NAMES Sachs, Rainer Kurt; Sachs, Ray
BRIEF DESCRIPTION American astrophysicist of German origin
DATE OF BIRTH June 13, 1932
PLACE OF BIRTH Frankfurt am Main , Hesse , German Empire