Draft:Keith Vanderlinde

• Comment: In preparing this draft, I disclose that AI assistance was used as follows: I used Google gemini to look up citations and proof-read/grammar check paragraphs. I also used it for citation syntax and scientist syntax. Astrowinnie (talk) 18:57, 2 October 2026 (UTC)

Keith Vanderlinde
Education	Massachusetts Institute of Technology (BSc) University of Chicago (PhD)
Known for	CHIME CHORD South Pole Telescope
Scientific career
Fields	Cosmology, radio astronomy, astronomical instrumentation
Workplaces	University of Toronto Dunlap Institute for Astronomy & Astrophysics McGill University
Website	www.dunlap.utoronto.ca/~vanderlinde/

Keith Vanderlinde is a Canadian experimental cosmologist, radio astronomer, and astronomical instrument builder. He is a professor at the University of Toronto's David A. Dunlap Department of Astronomy & Astrophysics and the Dunlap Institute for Astronomy & Astrophysics.

Vanderlinde has played a major role in the development of the Canadian Hydrogen Intensity Mapping Experiment (CHIME), including leading the University of Toronto effort that developed its GPU-based spatial-processing system. He is also a co-principal investigator and telescope architect of CHIME's successor, the Canadian Hydrogen Observatory and Radio-transient Detector (CHORD), a new radio telescope array under construction at the Dominion Radio Astrophysical Observatory in British Columbia.

Earlier in his career, Vanderlinde worked on the South Pole Telescope (SPT). In 2008 he spent the Antarctic winter at the Amundsen–Scott South Pole Station.

Education and career

Vanderlinde received a Bachelor of Science degree in physics with electrical engineering from the Massachusetts Institute of Technology in 2002 and a PhD in physics from the University of Chicago in 2008.

During his doctoral work he was involved with the South Pole Telescope, a 10-metre microwave telescope at the geographic South Pole designed to study the cosmic microwave background, galaxy clusters, and cosmology. In 2008, Vanderlinde and Dana Hrubes spent the Antarctic winter operating the telescope.

After completing his doctorate, Vanderlinde moved to McGill University, where he was a postdoctoral researcher with Prof. Matt Dobbs and held a Trottier Fellowship and a Canadian Institute for Advanced Research Junior Fellowship. He began working on the CHIME concept and spearheaded the effort to develop a GPU-based X-engine, an effort he carried to Toronto.

He joined the Dunlap Institute at the University of Toronto in January 2013. He subsequently became a professor in the David A. Dunlap Department of Astronomy & Astrophysics and leads a laboratory developing instrumentation for radio astronomy.

Research

Vanderlinde's research combines observational cosmology with the development of radio and microwave astronomical instrumentation. His scientific interests include the use of large-scale structure to study the expansion history of the Universe, observations of the 21-cm emission line of neutral hydrogen, fast radio bursts (FRBs), pulsars, and high-performance digital signal processing for radio telescopes.

South Pole Telescope

Vanderlinde's early research involved the South Pole Telescope (SPT).

In 2008, Vanderlinde was one of approximately 60 people who spent the Antarctic winter at the Amundsen–Scott South Pole Station. Together with fellow winter-over Dana Hrubes, he was responsible for keeping the South Pole Telescope operating during the winter, when temperatures fell below −70 °C and aircraft could not reach the station.

The experience subsequently received media attention both for the unusual conditions under which the telescope was operated and for Vanderlinde's photography of the Antarctic sky. Some of his photographs from the winter were later used in publications about Antarctic astronomy and the South Pole Telescope.

A major result of Vanderlinde's work with the South Pole Telescope was the first catalog of galaxy clusters selected through the Sunyaev–Zeldovich effect (SZE). In 2010 while at McGill University, Vanderlinde was lead author of an analysis of the SPT's 2008 survey data that identified 21 confirmed galaxy clusters in 178 square degrees of sky. The catalog demonstrated the ability of SZE surveys to find massive clusters over a wide range of redshifts. Because the strength of the SZE signal is nearly independent of a cluster's distance, the technique is particularly effective for finding massive clusters at high redshift. The abundance of such clusters is sensitive to the growth of cosmic structure. Combining the SPT cluster sample with seven-year WMAP data improved constraints on both the amplitude of matter fluctuations, σ₈, and the dark-energy equation-of-state parameter, w, by approximately 50 percent compared with WMAP alone.

CHIME

Vanderlinde led one of the three primary university teams that developed the Canadian Hydrogen Intensity Mapping Experiment (CHIME), a novel radio telescope at the Dominion Radio Astrophysical Observatory near Penticton, British Columbia.

CHIME was originally conceived as a cosmological instrument for measuring the distribution of neutral hydrogen and using baryon acoustic oscillations to study the expansion history of the Universe. Its unusual design uses four stationary cylindrical reflectors and a large digital correlator rather than mechanically steering the telescope. Later, a fast radio burst backend was conceived and added to the project.

The design and implementation of CHIME was distributed among several Canadian institutions, with major hardware efforts based at the University of British Columbia led by Mark Halpern, McGill University led by Matt Dobbs, and the University of Toronto led by Keith Vanderlinde. Vanderlinde's group developed the GPU-based X-engine and spatial-processing system.

CHIME began science operations in 2017 and subsequently became an important instrument not only for hydrogen-intensity mapping but also for the discovery and study of fast radio bursts and for pulsar observations. Vanderlinde has remained a CHIME co-investigator and has also been involved in the development of the CHIME/FRB outrigger system for very-long-baseline localization of FRBs.

CHORD

Vanderlinde is a co-principal investigator and telescope architect and telescope architect of the Canadian Hydrogen Observatory and Radio-transient Detector (CHORD), a successor to CHIME being constructed at the Dominion Radio Astrophysical Observatory. McGill University identified Vanderlinde as the external team lead for the project when its major infrastructure funding was announced.

CHORD extends the techniques developed for CHIME using an array of 512 six-metre dishes equipped with ultra-wideband receivers covering approximately 300 to 1500 MHz. The project is designed for studies of fast radio bursts, pulsars, neutral-hydrogen cosmology, and radio continuum sources.

Personal life

Vanderlinde has undertaken long-distance bicycle touring. Before his academic career, he bicycled from Boston to San Francisco with two companions, Jacob Abernethy and Damien Burke.

Vanderlinde took up photography during the winter at the South Pole as a way of documenting the environment and the Antarctic sky. His photographs include images of the South Pole Telescope, aurorae, the Milky Way, and atmospheric and ice phenomena around the station. His photographs have subsequently appeared in science publications and articles about Antarctic astronomy.

Awards and honours

• Canadian Institute for Advanced Research Junior Fellowship
• Member of the CHIME collaboration awarded the 2020 Governor General's Innovation Award
• Shared the 2022 Brockhouse Canada Prize for Interdisciplinary Research in Science and Engineering

External links

• Official website

Category:Canadian cosmologists Category:Canadian astrophysicists Category:Radio astronomers Category:Massachusetts Institute of Technology alumni Category:University of Chicago alumni