John E. Carlstrom (born 1957) is an American astrophysicist, and Professor, Departments of Astronomy and Astrophysics, and Physics, at the

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

. He graduated from

Vassar College Vassar College ( ) is a private liberal arts college in Poughkeepsie, New York, United States. Founded in 1861 by Matthew Vassar, it was the second degree-granting institution of higher education for women in the United States, closely foll ...

with a B.A. in 1981, and from the

University of California, Berkeley The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California) is a public land-grant research university in Berkeley, California. Established in 1868 as the University of California, it is the state's first land-grant un ...

with a Ph.D. in 1988. Carlstrom specializes in measurements of the

Cosmic 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 spac ...

, and has led several experiments including the

Degree Angular Scale Interferometer The Degree Angular Scale Interferometer (DASI) was a telescope installed at the U.S. National Science Foundation's Amundsen–Scott South Pole Station in Antarctica. It was a 13-element interferometer operating between 26 and 36 GHz (Ka band ...

, the Sunyaev-Zel'dovich Array, and the

South Pole Telescope The South Pole Telescope (SPT) is a diameter telescope located at the Amundsen–Scott South Pole Station, Antarctica. The telescope is designed for observations in the microwave, millimeter-wave, and submillimeter-wave regions of the electroma ...

. He is also known for manufacturing the Gunn oscillators used at several millimeter and submillimeter observatories such as the BIMA array, the Caltech Submillimeter Observatory and the

James Clerk Maxwell Telescope The James Clerk Maxwell Telescope (JCMT) is a submillimetre-wavelength radio telescope at Mauna Kea Observatory in Hawaii, US. The telescope is near the summit of Mauna Kea at . Its primary mirror is 15 metres (16.4 yards) across: it is the lar ...

. These oscillators produced the local oscillator signal for the observatorys'

heterodyne A heterodyne is a signal frequency that is created by combining or mixing two other frequencies using a signal processing technique called ''heterodyning'', which was invented by Canadian inventor-engineer Reginald Fessenden. Heterodyning is u ...

receivers.

Awards

* 1998

MacArthur Fellows Program The MacArthur Fellows Program, also known as the MacArthur Fellowship and commonly but unofficially known as the "Genius Grant", is a prize awarded annually by the John D. and Catherine T. MacArthur Foundation typically to between 20 and 30 indi ...

* 2004 Magellanic Gold Medal * 2006 Beatrice M. Tinsley Prize * 2015 Gruber Prize in Cosmology * 2020 Elected a Legacy Fellow of the

American Astronomical Society The American Astronomical Society (AAS, sometimes spoken as "double-A-S") is an American society of professional astronomers and other interested individuals, headquartered in Washington, DC. The primary objective of the AAS is to promote the adv ...

References

External links

John E. Carlstrom"
''Scientific Commons'' 1957 births Living people American astronomers University of Chicago faculty Vassar College alumni University of California, Berkeley alumni MacArthur Fellows Members of the United States National Academy of Sciences Fellows of the American Physical Society Fellows of the American Astronomical Society {{US-astronomer-stub