March 20, 2023

Jim Peebles (Physicist and Theoretical Cosmologist) Bio, Wiki, Age, Education, Academic Career, Family, Nobel laureates in physics 2019

Jim Peebles Bio, Wiki

Phillip James Edwin Peebles was born on April 25th, 1935. He is a Canadian-American physicist and theoretical cosmologist who is currently the Albert Einstein Professor Emeritus of Science at Princeton University. He set the foundations for modern cosmology with his work on the big bang, dark matter, and dark energy, and to Didier Queloz and Michel Mayor who spotted the first world beyond the solar system.

He was awarded half of the Nobel Prize in Physics in 2019 for his theoretical discoveries in physical cosmology.

Jim Peebles Education

Jim Peebles was born in Winnipeg, Manitoba, Canada. He completed his bachelor’s degree at the University of Manitoba. He left Manitoba in the fall of 1958 to attend Princeton University, where he completed his doctorate supervised by Robert Dicke; he remained at Princeton for his whole career.

Jim Peebles Academic Career

Jim Peebles is mainly renown for his Cosmic Microwave Background. He has made many important contributions to the Big Bang model. With Dicke and others (nearly two decades after George Gamov, Ralph A. Alpher, and Robert C. Herman), he predicted the cosmic microwave background radiation. Along with making major contributions to Big Bang nucleosynthesis, dark matter, and dark energy, he was the leading pioneer in the theory of cosmic structure formation in the 1970s. Peebles was studying physical cosmology and has done much to establish its respectability even before it was considered a serious, quantitative branch of physics. His Shaw Prize citation states “He laid the foundations for almost all modern investigations in cosmology, both theoretical and observational, transforming a highly speculative field into a precision science.”

Peebles has a long record of innovating the basic ideas, which would be extensively studied later by other scientists. For instance, in 1987, he proposed the primordial isocurvature baryon model for the development of the early universe. Similarly, Peebles contributed to establishing the problem of dark matter in the early 1970s. Peebles is also known for the Ostriker–Peebles criterion, relating to the stability of galactic formation.

Jim Peebles Books

His three textbooks (Physical Cosmology, 1971; Large Scale Structure of the Universe, 1980; Principles of Physical Cosmology, 1993) have been standard references in the field. In Principles of Physical Cosmology, he expressed a preferred reference frame for velocity anywhere in the universe based on Isotropic Cosmic Background Radiation, a departure from previous models, but according to Peebles not in violation of Relativity. Victor Weisskopf gave the same opinion in his book.  Without compromising Relativity principles in 1949 Albert Einstein introduced the concept of a preferred inertial frame in his Autobiographical Notes with the recommendation that kinetic energy should be developed as a field concept, but this was not possible at the time before the discovery of Cosmic Background Radiation.

Jim Peebles Nobel laureates in physics

James Peebles, Michel Mayor, and Didier Queloz are the 2019 Nobel laureates in physics.  The three scientists were awarded the 2019 Nobel prize in physics for groundbreaking discoveries about the evolution of the Universe and the Earth’s place within it.

The Canadian scientist James Peebles has been awarded half of the 9m Swedish kronor (£740,000) prize for his theoretical discoveries about the evolution of the universe. A Swiss duo of astronomers, Michel Mayor and Didier Queloz, will share the other half of the prize for their discovery of the first planet beyond our solar system.

James Peebles was rewarded for laying a foundation for modern cosmology, including his realization that the faint microwave radiation that fills the cosmos contains crucial clues to how the universe evolved after the Big Bang and the development of a radical theory on the nature of dark matter.