RIT's 2005 landmark research matches the actual waveform signals
Research conducted by Rochester Institute of Technology scientists was integral to the breakthrough detection of gravitational waves from binary black holes that was announced today by the Laser Interferometer Gravitational-wave Observatory (LIGO) Scientific Collaboration.
The collaboration's findings confirm the existence of gravitational waves predicted by Albert Einstein's 1915 general theory of relativity and introduce a revolutionary new way of understanding the universe through gravitational wave astronomy. Six Rochester Institute of Technology researchers are among the authors on the upcoming paper in Physical Review Letters.
The LIGO paper prominently cites 2005 landmark research on binary black hole mergers led by Manuela Campanelli, director of RIT's Center for Computational Relativity and Gravitation. The signal detected by LIGO matches the numerical model of the waveform confirmed by RIT researchers and predicted in their 2005 breakthrough science, "Accurate Evolutions of Orbiting Black-Hole Binaries without Excision," originally published in Physical Review Letters, on March 22, 2006. The paper recently appeared in the American Physical Society's curated collection of seminal papers celebrating 100 years of Einstein's theory of general relativity.
Based on this milestone work from a decade ago, RIT researchers at the center, Carlos Lousto and James Healy, numerically modeled the merger of a pair of black holes and simulated gravitational waveforms. The actual wave patterns LIGO detected on Sept. 14, 2015, matched the simulations Lousto and Healy had created.
"The direct observation of a binary black hole merger by LIGO is an amazing confirmation of our theoretical calculations," said Campanelli, professor in RIT's School of Mathematical Sciences and an American Physical Society Fellow. "This is a historic moment in science."
The RIT team's breakthrough, known as the "moving puncture" approach, solved the interrelated equations for strong field gravity that comprise Einstein's theory of general relativity. Their method radically transformed the landscape of numerical relativity--a specialized field that solves Einstein's equations with sophisticated mathematics and supercomputers--and opened frontiers in gravitational wave astrophysics, Campanelli said.
RIT scientists used the moving puncture approach to make the first calculations of gravitational radiation from merging black holes with arbitrary masses and spins, and the discovery of large gravitational-radiation recoils from spinning supermassive black-hole mergers. The method also made possible their study of spin dynamics effects, such as spin-flips, precession and hang-up orbits, and extreme mass-ratio binaries.
"It is incredibly exciting to see the deep connections between theory and observation," said Lousto, a co-author on both the 2006 and LIGO breakthrough papers. "This is the Holy Grail of science. To confirm amazing predictions of general relativity is a dream come true. We have witnessed a historic event, the confirmation of the 100-year-old predictions of Einstein regarding gravitational waves and our 10-year-old computation of the merger of two black holes in a single event."
Collaborator Pedro Marronetti, program director of the division of gravitational physics at the National Science Foundation, noted that the simplicity and accuracy of their moving-puncture technique "opened up the field to a number of groups, large and small, all across the world."
RIT associate professor Yosef Zlochower, then a postdoctoral fellow and the fourth member of Campanelli's team, said, "We are witnessing the dawn of a new understanding of the universe," he said. "This has been decades in the making, and we are very proud to be part of this great effort."
For more information on the RIT team: https:/
For information on RIT's Black Hole Lab: http://www.
Susan Gawlowicz | EurekAlert!
Structured light and nanomaterials open new ways to tailor light at the nanoscale
23.04.2018 | Academy of Finland
On the shape of the 'petal' for the dissipation curve
23.04.2018 | Lobachevsky University
At the Hannover Messe 2018, the Bundesanstalt für Materialforschung und-prüfung (BAM) will show how, in the future, astronauts could produce their own tools or spare parts in zero gravity using 3D printing. This will reduce, weight and transport costs for space missions. Visitors can experience the innovative additive manufacturing process live at the fair.
Powder-based additive manufacturing in zero gravity is the name of the project in which a component is produced by applying metallic powder layers and then...
Physicists at the Laboratory for Attosecond Physics, which is jointly run by Ludwig-Maximilians-Universität and the Max Planck Institute of Quantum Optics, have developed a high-power laser system that generates ultrashort pulses of light covering a large share of the mid-infrared spectrum. The researchers envisage a wide range of applications for the technology – in the early diagnosis of cancer, for instance.
Molecules are the building blocks of life. Like all other organisms, we are made of them. They control our biorhythm, and they can also reflect our state of...
University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.
Repairing major load-bearing bones such as those in the leg can be a long and uncomfortable process.
Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.
Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...
Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.
The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...
13.04.2018 | Event News
12.04.2018 | Event News
09.04.2018 | Event News
24.04.2018 | Information Technology
24.04.2018 | Earth Sciences
24.04.2018 | Life Sciences