Joseph Silk

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Joseph Silk
Joseph Silk.jpg
Born (1942-12-03) December 3, 1942 (age 74)
London, England
Residence Flag of the United Kingdom.svg UK
Nationality Flag of the United Kingdom.svg British
Flag of the United States.svg American
Fields Cosmology
Institutions Institut d'astrophysique de Paris
University of Oxford
University of California, Berkeley
Johns Hopkins University
Alma mater Clare College, Cambridge
Harvard University
Notable awards Balzan Prize (2011)

Joseph Ivor Silk FRS (born 3 December 1942) is a British astrophysicist. He was the Savilian Chair of Astronomy at the University of Oxford from 1999 to September 2011. He was educated at Tottenham County School (1954-1960) and went on to study Mathematics at the University of Cambridge (1960-1963).[1] He gained his PhD in Astronomy from Harvard in 1968. Silk took up his first post at Berkeley in 1970, and the Chair in Astronomy in 1978. Following a career of nearly 30 years there, Silk returned to the UK in 1999 to take up the Savilian Chair at the University of Oxford. He is currently Professor of Physics at the Institut d’Astrophysique de Paris, Université Pierre et Marie Curie, Homewood Professor of Physics and Astronomy at Johns Hopkins University (since in 2010), and Professor of Astronomy at Gresham College since 2015.[2]

He is an Emeritus Fellow of New College, Oxford[3] and a Fellow of the Royal Society (elected May 1999). He was awarded the 2011 Balzan Prize for his works on the early Universe.[4] Silk has given more than two hundred invited conference lectures, primarily on galaxy formation and cosmology.

Silk damping[edit]

Main article: Diffusion damping

The structure of the cosmic microwave background anisotropies is principally determined by two effects: acoustic oscillations and diffusion damping. The latter is also called collisionless or Silk damping after Joseph Silk.[citation needed]


Silk has over 500 publications, of which 3 have been cited over 400 times, 20 have been published in Nature and 11 in Science.[5]

In 2011, Silk delivered a talk, “The Creation of the Universe,” at the first Starmus Festival in the Canary Islands. The talk was subsequently published in the book Starmus: 50 Years of Man in Space.[6]

Books by Joseph Silk[edit]


External links[edit]