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The Canadian Institute for Theoretical Astrophysics (CITA) is a national
research institute A research institute, research centre, or research organization is an establishment founded for doing research. Research institutes may specialize in basic research or may be oriented to applied research. Although the term often implies natural ...
funded by the
Natural Sciences and Engineering Research Council The Natural Sciences and Engineering Research Council of Canada (NSERC; , CRSNG) is the major federal agency responsible for funding natural sciences and engineering research in Canada. NSERC directly funds university professors and students as ...
, located at the
University of Toronto The University of Toronto (UToronto or U of T) is a public university, public research university whose main campus is located on the grounds that surround Queen's Park (Toronto), Queen's Park in Toronto, Ontario, Canada. It was founded by ...
in
Toronto Toronto ( , locally pronounced or ) is the List of the largest municipalities in Canada by population, most populous city in Canada. It is the capital city of the Provinces and territories of Canada, Canadian province of Ontario. With a p ...
,
Ontario Ontario is the southernmost Provinces and territories of Canada, province of Canada. Located in Central Canada, Ontario is the Population of Canada by province and territory, country's most populous province. As of the 2021 Canadian census, it ...
, Canada. CITA's mission is "to foster interaction within the Canadian theoretical
Astrophysics Astrophysics is a science that employs the methods and principles of physics and chemistry in the study of astronomical objects and phenomena. As one of the founders of the discipline, James Keeler, said, astrophysics "seeks to ascertain the ...
community and to serve as an international center of excellence for theoretical studies in astrophysics." CITA was incorporated in 1984. CITA has close administrative and academic relations with the
Canadian Institute for Advanced Research The Canadian Institute for Advanced Research (CIFAR) is a Canadian-based global research organization that brings together teams of top researchers from around the world to address important and complex questions. It was founded in 1982 and is su ...
(CIFAR); several CITA faculty also serve as members of CIFAR.


History

The concept of a nationally supported institute for theoretical astrophysics dates back to discussions within the
Canadian Astronomical Society The Canadian Astronomical Society (CASCA; ) is a Canadian society of professional astronomers, founded in 1971 and incorporated in 1983. The society is devoted to the promotion and advancement of knowledge of the universe through research and e ...
in the early 1980s. A series of committees advocated a model of a university‑based institute governed by a council of Canadian astrophysicists. Proposals were solicited from universities across the country to host this institute, which by now had been named the Canadian Institute for Theoretical Astrophysics/Institut Canadien d'astrophysique theorique (CITA/ICAT). The
University of Toronto The University of Toronto (UToronto or U of T) is a public university, public research university whose main campus is located on the grounds that surround Queen's Park (Toronto), Queen's Park in Toronto, Ontario, Canada. It was founded by ...
won the resulting spirited competition, and CITA (
University of Toronto The University of Toronto (UToronto or U of T) is a public university, public research university whose main campus is located on the grounds that surround Queen's Park (Toronto), Queen's Park in Toronto, Ontario, Canada. It was founded by ...
) was established as an institute within the School of Graduate Studies in June 1984, with staff consisting of a single professor ( Peter G. Martin) as the acting director and a visiting professor from Queen's University (Richard Henriksen) and a temporary administrative assistant. Today there are 9 faculty members two of which are
Canada Research Chairs Canada Research Chair (CRC) is a title given to certain Canadian university research professors by the Canada Research Chairs Program. Program goals The Canada Research Chair program was established in 2000 as a part of the Government of Canada ...
, two administrative staff, a Systems Manager and technical computing staff. At the same time, Professor
Richard Henriksen Richard is a male given name. It originates, via Old French, from Old Frankish and is a compound of the words descending from Proto-Germanic language">Proto-Germanic ''*rīk-'' 'ruler, leader, king' and ''*hardu-'' 'strong, brave, hardy', and ...
worked on establishing CITA, Inc. (a separate entity from CITA the institute at the University of Toronto) as an incorporated national institute and charity governed by an elected Council of Canadian astrophysics/relativity professors to promote research in theoretical astrophysics across the country. CITA Council is selected from CITA Inc members. There are presently 55 members of CITA, Inc. CITA's research activities are supported by the
University of Toronto The University of Toronto (UToronto or U of T) is a public university, public research university whose main campus is located on the grounds that surround Queen's Park (Toronto), Queen's Park in Toronto, Ontario, Canada. It was founded by ...
,
NSERC The Natural Sciences and Engineering Research Council of Canada (NSERC; , CRSNG) is the major federal agency responsible for funding natural sciences and engineering research in Canada. NSERC directly funds university professors and students as ...
, multiple grants by the Ontario and Federal governments, as well as private sponsors including the
Simons Foundation The Simons Foundation is an American private foundation established in 1994 by Marilyn and James Harris Simons, Jim Simons with offices in New York City. As one of the largest charitable organizations in the United States with assets of over $5 ...
and
CIFAR The Canadian Institute for Advanced Research (CIFAR) is a Canadian-based global research organization that brings together teams of top researchers from around the world to address important and complex questions. It was founded in 1982 and is su ...
.


Membership

CITA has a small number of long-term faculty members, and a larger number of short term (3- or 5-year) postdoctoral positions, as well as an active visitor program; the purpose of the relatively high influx of new researchers or visitors is to ensure that timely topics are well represented at CITA. There are currently approximately 20 postdoctoral researchers at CITA, and 4 full-time administrative and computer staff. Several graduate students in the
University of Toronto The University of Toronto (UToronto or U of T) is a public university, public research university whose main campus is located on the grounds that surround Queen's Park (Toronto), Queen's Park in Toronto, Ontario, Canada. It was founded by ...
Department of Astronomy and Astrophysics or Department of Physics work with CITA researchers throughout their graduate work, and typically ten undergraduates come to CITA to work over the summer. In 1985, Scott D. Tremaine came to CITA as its first director; Margaret Fukunaga was hired as the permanent Business Officer and Dick Bond arrived as the second faculty member. Dick Bond became the director in 1996 and Norman Murray was director 2006–2016. Since 1984, the directors of the institute have been as follows: * Denotes interim directors. Notable past and present faculty members of CITA also include: *Peter G. Martin, 1984–present *
Scott Tremaine Scott Duncan Tremaine (born 1950) is a Canadian-born astrophysicist. He is a fellow of the Royal Society of London, the Royal Society of Canada and the National Academy of Sciences. Tremaine is widely regarded as one of the world's leading ast ...
, 1985–1997, 2020–present * Dick Bond, 1985–present *
Nick Kaiser Nicholas Kaiser (15 September 1954 – 13 June 2023) was a British cosmologist. He is the son of Thomas Reeve Kaiser. Life and career Kaiser received his Bachelor's in physics at Leeds University in 1978, and his Part III in maths at Univers ...
, 1988–1997 *Norm Murray, 1993–present *Lev Kofman, 1998–2009 *
Ue-Li Pen Ue-Li Pen (Traditional Chinese: , born 26 July 1967 in Giessen) is a Canadian astrophysicist, cosmologist, and computational physicist. Education and career Born in Germany to Taiwanese parents, Ue-Li Pen at age 13 moved with his parents to Canada. ...
, 1998–present * Chris Thompson, 2000–present *Roman Rafikov, 2005–2007 *Harald Pfeiffer, 2009–2018 *Daniel Green, 2014–2015 * Juna Kollmeier, 2021-present *Maya Fishbach, 2022-present *Reed Essick, 2022-present *Bart Ripperda, 2022-present


Research

CITA has active research programs in
cosmology Cosmology () is a branch of physics and metaphysics dealing with the nature of the universe, the cosmos. The term ''cosmology'' was first used in English in 1656 in Thomas Blount's ''Glossographia'', with the meaning of "a speaking of the wo ...
(particularly in studies of the
cosmic microwave background The cosmic microwave background (CMB, CMBR), or relic radiation, is microwave radiation that fills all space in the observable universe. With a standard optical telescope, the background space between stars and galaxies is almost completely dar ...
and
intensity mapping In cosmology, intensity mapping is an observational technique for surveying the large-scale structure of the universe by using the integrated radio emission from unresolved gas clouds. In its most common variant, 21 cm intensity mapping, the ...
), early universe studies and
cosmic inflation In physical cosmology, cosmic inflation, cosmological inflation, or just inflation, is a theory of exponential expansion of space in the very early universe. Following the inflationary period, the universe continued to expand, but at a slower ...
,
neutron stars A neutron star is the gravitationally collapsed core of a massive supergiant star. It results from the supernova explosion of a massive star—combined with gravitational collapse—that compresses the core past white dwarf star density to th ...
(especially scintillometry and
magnetars A magnetar is a type of neutron star with an extremely powerful magnetic field (~109 to 1011 T, ~1013 to 1015 G). The magnetic-field decay powers the emission of high-energy electromagnetic radiation, particularly X-rays and gamma rays.Ward; Br ...
),
fast radio burst In radio astronomy, a fast radio burst (FRB) is a transient radio wave of length ranging from a fraction of a millisecond, for an ultra-fast radio burst, to 3 seconds, caused by a high-energy astrophysical process as yet not understood. Astronome ...
,
active galaxies An active galactic nucleus (AGN) is a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars. Such e ...
,
star formation Star formation is the process by which dense regions within molecular clouds in interstellar space—sometimes referred to as "stellar nurseries" or "star-forming regions"—Jeans instability, collapse and form stars. As a branch of astronomy, sta ...
,
planet formation The nebular hypothesis is the most widely accepted model in the field of cosmogony to explain the formation and evolution of the Solar System (as well as other planetary systems). It suggests the Solar System is formed from gas and dust orbiting t ...
,
gravitational waves Gravitational waves are oscillations of the gravitational field that travel through space at the speed of light; they are generated by the relative motion of gravitating masses. They were proposed by Oliver Heaviside in 1893 and then later by H ...
and plasma astrophysics.


See also

* Algonquin 46m radio telescope *
Algonquin Radio Observatory The Algonquin Radio Observatory (ARO) is a radio observatory located in Algonquin Provincial Park in Ontario, Canada. It opened in 1959 in order to host a number of the National Research Council of Canada's (NRC) ongoing experiments in a more ra ...
*
Dominion Astrophysical Observatory The Dominion Astrophysical Observatory, located on Observatory Hill (Saanich), Observatory Hill, in Saanich, British Columbia, was completed in 1918 by the Canadian Government, Canadian government. The Dominion architect responsible for the bui ...
*
Dominion Radio Astrophysical Observatory The Dominion Radio Astrophysical Observatory is a research facility founded in 1960 and located at Kaleden, British Columbia, Canada. The site houses four radio telescopes: an interferometric radio telescope, a 26-m single-dish antenna, a sol ...
* Herzberg Institute of Astrophysics


References


External links


The Canadian Institute for Theoretical AstrophysicsAn incomplete listing of recent CITA publications
{{DEFAULTSORT:Canadian Institute For Theoretical Astrophysics University of Toronto Astronomy institutes and departments