George R. Blumenthal (born 1945) is an American astrophysicist,

astronomer An astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth. They observe astronomical objects such as stars, planets, natural satellite, moons, comets and galaxy, g ...

, professor, and academic administrator. He was the tenth

chancellor Chancellor ( la, cancellarius) is a title of various official positions in the governments of many nations. The original chancellors were the of Roman courts of justice—ushers, who sat at the or lattice work screens of a basilica or law cou ...

of the

University of California, Santa Cruz The University of California, Santa Cruz (UC Santa Cruz or UCSC) is a public university, public Land-grant university, land-grant research university in Santa Cruz, California. It is one of the ten campuses in the University of California syste ...

Biography

Blumenthal was born in

Milwaukee, Wisconsin Milwaukee ( ), officially the City of Milwaukee, is both the most populous and most densely populated city in the U.S. state of Wisconsin and the county seat of Milwaukee County, Wisconsin, Milwaukee County. With a population of 577,222 at th ...

, on October 20, 1945, to Lillian and Marcel Blumenthal, the owners of a small Venetian blinds operation. He was interested in science at a very early age and recalls the launch of the Soviet Sputnik I satellite in 1957. Blumenthal holds a

B.S. A Bachelor of Science (BS, BSc, SB, or ScB; from the Latin ') is a bachelor's degree awarded for programs that generally last three to five years. The first university to admit a student to the degree of Bachelor of Science was the University of ...

physics Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which r ...

from the

University of Wisconsin–Milwaukee The University of Wisconsin–Milwaukee (UW–Milwaukee, UWM, or Milwaukee) is a public urban research university in Milwaukee, Wisconsin. It is the largest university in the Milwaukee metropolitan area and a member of the University of Wiscons ...

and a

Ph.D. A Doctor of Philosophy (PhD, Ph.D., or DPhil; Latin: or ') is the most common degree at the highest academic level awarded following a course of study. PhDs are awarded for programs across the whole breadth of academic fields. Because it is a ...

in physics from the

University of California, San Diego The University of California, San Diego (UC San Diego or colloquially, UCSD) is a public university, public Land-grant university, land-grant research university in San Diego, California. Established in 1960 near the pre-existing Scripps Insti ...

. Blumenthal is known particularly for his work with Santa Cruz colleagues

Sandra M. Faber Sandra Moore Faber (born December 28, 1944) is an American astrophysicist known for her research on the evolution of galaxies. She is the University Professor of Astronomy and Astrophysics at the University of California, Santa Cruz, and works a ...

and

Joel Primack Joel R. Primack (born July 14, 1945) is a professor of physics and astrophysics at the University of California, Santa Cruz and is a member of the Santa Cruz Institute for Particle Physics. Primack received his A.B. from Princeton University in ...

and with

Martin Rees Martin John Rees, Baron Rees of Ludlow One or more of the preceding sentences incorporates text from the royalsociety.org website where: (born 23 June 1942) is a British cosmologist and astrophysicist. He is the fifteenth Astronomer Royal, ...

Cambridge University , mottoeng = Literal: From here, light and sacred draughts. Non literal: From this place, we gain enlightenment and precious knowledge. , established = , other_name = The Chancellor, Masters and Schola ...

dark matter Dark matter is a hypothetical form of matter thought to account for approximately 85% of the matter in the universe. Dark matter is called "dark" because it does not appear to interact with the electromagnetic field, which means it does not ab ...

. Their theory of

cold dark matter In cosmology and physics, cold dark matter (CDM) is a hypothetical type of dark matter. According to the current standard model of cosmology, Lambda-CDM model, approximately 27% of the universe is dark matter and 68% is dark energy, with only a sm ...

, developed in the 1980s, remains the standard explanation of the formation of

galaxies A galaxy is a system of stars, stellar remnants, interstellar gas, dust, dark matter, bound together by gravity. The word is derived from the Greek ' (), literally 'milky', a reference to the Milky Way galaxy that contains the Solar System. ...

and

galaxy clusters A galaxy cluster, or a cluster of galaxies, is a structure that consists of anywhere from hundreds to thousands of galaxies that are bound together by gravity, with typical masses ranging from 1014 to 1015 solar masses. They are the second-la ...

. Blumenthal has also worked in many other areas of astrophysics, including the study of

gamma-ray bursts In gamma-ray astronomy, gamma-ray bursts (GRBs) are immensely energetic explosions that have been observed in distant galaxies. They are the most energetic and luminous electromagnetic events since the Big Bang. Bursts can last from ten millise ...

accretion disks An accretion disk is a structure (often a circumstellar disk) formed by diffuse material in orbital motion around a massive central body. The central body is typically a star. Friction, uneven irradiance, magnetohydrodynamic effects, and other fo ...

active galaxies An active galactic nucleus (AGN) is a compact region at the center of a galaxy that has a much-higher-than-normal luminosity over at least some portion of the electromagnetic spectrum with characteristics indicating that the luminosity is not pr ...

, and the

microwave background In Big Bang cosmology the cosmic microwave background (CMB, CMBR) is electromagnetic radiation that is a remnant from an early stage of the universe, also known as "relic radiation". The CMB is faint cosmic background radiation filling all space ...

radiation left by the

Big Bang The Big Bang event is a physical theory that describes how the universe expanded from an initial state of high density and temperature. Various cosmological models of the Big Bang explain the evolution of the observable universe from the ...

. Blumenthal was the chair of the UC Santa Cruz Academic Senate from 2001 to 2003 and served one year each as Vice Chair and Chair of the

University of California The University of California (UC) is a public land-grant research university system in the U.S. state of California. The system is composed of the campuses at Berkeley, Davis, Irvine, Los Angeles, Merced, Riverside, San Diego, San Francisco, ...

Academic Senate. He succeeded

Denice Denton Denice Dee Denton (August 27, 1959 – June 24, 2006) was an American professor of electrical engineering and academic administrator. She was the ninth chancellor of the University of California, Santa Cruz. Biography Early years Denton was ...

as UCSC chancellor in 2006 after her suicide. Blumenthal stepped down as chancellor at the end of June 2019 to resume work in Astronomy and to work part time at the U.C. Berkeley Center for Studies in Higher Education. He was succeeded as chancellor by

Cynthia Larive Cynthia Larive is an American scientist and academic administrator serving as the chancellor of University of California, Santa Cruz. Larive's research focuses on nuclear magnetic resonance spectroscopy (NMR) and mass spectrometry. She was previo ...

. He co-authored of two textbooks, ''21st Century Astronomy'' and ''Understanding Our Universe'', and has written more than 75 scientific publications. George Blumenthal is a member of the American University of Armenia Corporation Board of Trustees.

Personal life

Blumenthal is married to

UC Hastings The University of California, Hastings College of the Law (UC Hastings) is a public law school in San Francisco, California. Founded in 1878 by Serranus Clinton Hastings, UC Hastings was the first law school of the University of California as ...

professor of law Kelly Weisberg, with whom he has two children.

References

*
UCSC Reunion Luncheon Interrupted to Demand Fair Wages for Workers

External links

UCSC Chancellor's web site

"Meet George Blumenthal, UC Santa Cruz", Web page on the site of the Joint venture Silicon Valley Network
{{DEFAULTSORT:Blumenthal, George 1945 births Living people American astronomers Chancellors of the University of California, Santa Cruz University of California, San Diego alumni University of Wisconsin–Milwaukee alumni