Alessandra Buonanno
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Alessandra Buonanno
Alessandra Buonanno is an Italian naturalized-American theoretical physicist and director at the Max Planck Institute for Gravitational Physics (Albert Einstein Institute) in Potsdam. She is the head of the "Astrophysical and Cosmological Relativity" department. She holds a research professorship at the University of Maryland, College Park, and honorary professorships at the Humboldt University in Berlin, and the University of Potsdam. She is a leading member of the LIGO Scientific Collaboration, which observed gravitational waves from a binary black-hole merger in 2015. Early life and education Buonanno earned her MSc in 1993, and she completed her PhD in theoretical physics at the University of Pisa in 1996. After a brief period spent at the theory division of CERN, she held a postdoctoral position at the Institut des Hautes Etudes Scientifiques (IHES) in France and the R.C. Tolman Prize Fellowship at the California Institute of Technology. Career and research Buonanno ...
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Cassino
Cassino () is a ''comune'' in the province of Frosinone, Southern Italy, at the southern end of the region of Lazio, the last city of the Latin Valley. Cassino is located at the foot of Monte Cairo near the confluence of the Gari and Liri rivers. The city is best known as the site of the Abbey of Montecassino and the Battle of Monte Cassino during World War II, which resulted in huge Allied and German casualties as well as the near total destruction of the town itself. It is also home to the University of Cassino. Cassino has a population of 35,969 , making it the second largest town in the province. History Ancient Cassino's roots lie in the settlement of Casinum, the last city of the Latins, of Umbrian or Venetic or Oscan origin, sited atop the hill of Cassino near Monte Cairo, five kilometres to the north. Casinum passed under the control of the Volscians first and then the Samnites, Eventually Sabini (a Volsci branch and Umbrian/Venetic origins) were defeated by ...
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LIGO Scientific Collaboration
The LIGO Scientific Collaboration (LSC) is a scientific collaboration of international physics institutes and research groups dedicated to the search for gravitational waves. History The LSC was established in 1997, under the leadership of Barry Barish. Its mission is to ensure equal scientific opportunity for individual participants and institutions by organizing research, publications, and all other scientific activities, and it includes scientists from both LIGO Laboratory and collaborating institutions. Barish appointed Rainer Weiss as the first spokesperson. LSC members have access to the US-based Advanced LIGO detectors in Hanford, Washington and in Livingston, Louisiana, as well as the GEO 600 detector in Sarstedt, Germany. Under an agreement with the European Gravitational Observatory (EGO), LSC members also have access to data from the Virgo detector in Pisa, Italy. While the LSC and the Virgo Collaboration are separate organizations, they cooperate closely and are refe ...
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Gravitational Waves
Gravitational waves are waves of the intensity of gravity generated by the accelerated masses of an orbital binary system that Wave propagation, propagate as waves outward from their source at the speed of light. They were first proposed by Oliver Heaviside in 1893 and then later by Henri Poincaré in 1905 as waves similar to Electromagnetic radiation, electromagnetic waves but the gravitational equivalent. Gravitational waves were later #History, predicted in 1916 by Albert Einstein on the basis of his General relativity, general theory of relativity as ripples in spacetime. Later he refused to accept gravitational waves. Gravitational waves transport energy as gravitational radiation, a form of radiant energy similar to electromagnetic radiation. Newton's law of universal gravitation, part of classical mechanics, does not provide for their existence, since that law is predicated on the assumption that Speed of gravity, physical interactions propagate instantaneously (at infinite ...
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Numerical Relativity
Numerical relativity is one of the branches of general relativity that uses numerical methods and algorithms to solve and analyze problems. To this end, supercomputers are often employed to study black holes, gravitational waves, neutron stars and many other phenomena governed by Einstein's theory of general relativity. A currently active field of research in numerical relativity is the simulation of relativistic binaries and their associated gravitational waves. Overview A primary goal of numerical relativity is to study spacetimes whose exact form is not known. The spacetimes so found computationally can either be fully dynamical, stationary or static and may contain matter fields or vacuum. In the case of stationary and static solutions, numerical methods may also be used to study the stability of the equilibrium spacetimes. In the case of dynamical spacetimes, the problem may be divided into the initial value problem and the evolution, each requiring different methods. Numeri ...
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Effective One-body Formalism
The effective one-body or EOB approach is an analytical approach to the gravitational two-body problem in general relativity. It was introduced by Alessandra Buonanno and Thibault Damour in 1999. It aims to describe all different phases of the two-body dynamics in a single analytical method. Classical gravity theory allows analytical calculations to be made in particular limits, such as post-Newtonian theory in the early inspiral, when the objects are at large separation, or black hole perturbation theory, when the two objects differ greatly in mass. In addition, they lead to results faster than numerical relativity. Rather than being considered distinct from these independent approaches to the two-body problem, the EOB approach is a way to resum information from other independent methods. It does so by mapping the general two-body problem to that of a test particle in an effective metric. The EOB approach was used in the data analysis of gravitational wave detectors such as ...
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Thibault Damour
Thibault Damour (; born 7 February 1951) is a French physicist. He was a permanent professor in theoretical physics at the Institut des Hautes Études Scientifiques (IHÉS) from 1989 to 2022. Since then, he is professor emeritus. An expert in general relativity, he has long taught this theory at the École Normale Supérieure (Ulm). He contributed greatly to the modelling of gravitational waves from compact binary systems, and with Alessandra Buonanno, he invented the "effective one-body" approach to representing the orbital trajectories of binary black holes. In 2021 he was awarded, with Alessandra Buonanno, the Balzan Prize The International Balzan Prize Foundation awards four annual monetary prizes to people or organizations who have made outstanding achievements in the fields of humanities, natural sciences, culture, as well as for endeavours for peace and the br ... for Gravitation: physical and astrophysical aspects as well as the Galileo Galilei Medal and the Dir ...
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Perimeter Institute For Theoretical Physics
Perimeter Institute for Theoretical Physics (PI, Perimeter, PITP) is an independent research centre in foundational theoretical physics located in Waterloo, Ontario, Canada. It was founded in 1999. The institute's founding and major benefactor is Canadian entrepreneur and philanthropist Mike Lazaridis. The original building, designed by Saucier + Perrotte, opened in 2004 and was awarded a Governor General's Medal for Architecture in 2006. The Stephen Hawking Centre, designed by Teeple Architects, was opened in 2011 and was LEED Silver certified in 2015. In addition to research, Perimeter also provides scientific training and educational outreach activities to the general public. This is done in part through Perimeter's Educational Outreach team. History Lazaridis' initial donation of $100 million was announced on October 23, 2000, believed to be the biggest private donation in Canadian history to that point. A subsequent personal donation of $50 million was made on June 4, 2 ...
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Harvard University
Harvard University is a private Ivy League research university in Cambridge, Massachusetts. Founded in 1636 as Harvard College and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of higher learning in the United States and one of the most prestigious and highly ranked universities in the world. The university is composed of ten academic faculties plus Harvard Radcliffe Institute. The Faculty of Arts and Sciences offers study in a wide range of undergraduate and graduate academic disciplines, and other faculties offer only graduate degrees, including professional degrees. Harvard has three main campuses: the Cambridge campus centered on Harvard Yard; an adjoining campus immediately across Charles River in the Allston neighborhood of Boston; and the medical campus in Boston's Longwood Medical Area. Harvard's endowment is valued at $50.9 billion, making it the wealthiest academic institution in the world. Endowment inco ...
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Radcliffe Institute For Advanced Study
The Radcliffe Institute for Advanced Study at Harvard University—also known as the Harvard Radcliffe Institute—is a part of Harvard University that fosters interdisciplinary research across the humanities, sciences, social sciences, arts, and professions. It is the successor institution to the former Radcliffe College, originally a women's college connected with Harvard. The institute comprises three programs: * The Radcliffe Institute Fellowship Program is a highly selective fellowship that supports the work of 50 artists and scholars each year. * The Academic Ventures program is for collaborative research projects and hosts lectures and conferences. * The Arthur and Elizabeth Schlesinger Library on the History of Women in America documents the lives of American women of the past and present for the future. The Radcliffe Institute often hosts public events, many of which can be watched online. It is a member of the Some Institutes for Advanced Study consortium. Prof. T ...
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Kavli Frontiers Of Science
The Kavli Foundation, based in Los Angeles, California, is a foundation that supports the advancement of science and the increase of public understanding and support for scientists and their work. The Kavli Foundation was established in December 2000 by its founder and benefactor, Fred Kavli, a Norwegian business leader and philanthropist, who made his money by creating Kavlico, a company that made sensors, and by investing in real estate in southern California and Nevada. Kavli died in 2013, leaving the remainder of his wealth to the foundation. David Auston, a former president of Case Western Reserve University and former Bell Labs scientist, was the first president of the Kavli Foundation, from 2002 to 2009. He was succeeded by Robert W. Conn, who was president from 2009 to 2020. Cynthia M. Friend is the third and current president. To date, The Kavli Foundation has made grants to establish Kavli Institutes on the campuses of 20 major universities. In addition to the ...
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Centre National De La Recherche Scientifique
The French National Centre for Scientific Research (french: link=no, Centre national de la recherche scientifique, CNRS) is the French state research organisation and is the largest fundamental science Basic research, also called pure research or fundamental research, is a type of scientific research with the aim of improving scientific theories for better understanding and prediction of natural or other phenomena. In contrast, applied resear ... agency in Europe. In 2016, it employed 31,637 staff, including 11,137 tenured researchers, 13,415 engineers and technical staff, and 7,085 contractual workers. It is headquartered in Paris and has administrative offices in Brussels, Beijing, Tokyo, Singapore, Washington, D.C., Bonn, Moscow, Tunis, Johannesburg, Santiago de Chile, Israel, and New Delhi. From 2009 to 2016, the CNRS was ranked No. 1 worldwide by the SCImago Institutions Rankings, SCImago Institutions Rankings (SIR), an international ranking of research-focused institutio ...
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Institut D'astrophysique De Paris
The Institut d'Astrophysique de Paris (translated: Paris Institute of Astrophysics) is a research institute in Paris, France. The Institute is part of the Sorbonne University and is associated with the CNRS Centre national de la recherche scientifique. It is located at 98bis, Boulevard Arago Il in the 14th arrondissement of Paris, adjacent to the Paris Observatory. History The IAP was created in 1936 by the French ministry of education under Jean Zay, initially for the purpose of processing data received from the Observatory of Haute-Provence, which was created at the same time. Construction of the building started on 6 January 1938. On 15 June 1939, Henri Mineur became the institute's first director. IAP scientists were at first located in Paris Observatory, then in the École normale supérieure de Paris before arriving in the current building in 1944 which was finally completed in 1952. Current research The IAP includes 160 researchers, engineers, technicians, and adminis ...
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