Articles tagged with Gravitational Waves
Researchers have found evidence for two supermassive black holes orbiting each other every two years, with masses hundreds of millions times larger than our sun. The quasar's radio-light brightness exhibits sinusoidal variations due to the pair's motion, providing a nearly perfect light curve.
Recent research uses gravitational waves to assess what fraction of dark matter could be in the form of massive primordial black holes. The study sets an upper limit of less than half for such heavy black holes within a mass range of 100 to 100,000 solar masses.
The detection of high-frequency gravitational waves would offer insights into the early Universe's phases, inaccessible to electromagnetic wave investigations. Currently, technological challenges limit the sensitivity of proposed projects to six orders of magnitude lower.
Researchers suggest LISA can detect scalar fields interacting with gravity, providing strong bounds on theories beyond General Relativity. Extreme Mass Ratio Inspirals offer a unique probe of the strong-field regime of gravity.
An international team of astronomers has found strong evidence for an ultra-low frequency signal, consistent with the expected characteristics of a gravitational wave background. The discovery was made using data from 65 millisecond pulsars, combining independent data sets from around the world.
A new paper proposes a novel mechanism for detecting gravitational waves at lower energies, expanding the scope of the upcoming LiteBIRD mission. This could provide insights into the physics of the early Universe and test inflationary scenarios operating at lower energies.
A team of international researchers challenged Einstein's theory of general relativity using pulsars as a cosmic laboratory. They detected new relativistic effects, including light deflection and time dilation, with unprecedented precision. The study provides significant insights into gravity theories and the fundamental forces of nature.
Researchers propose a method using optical cavities to enhance atom interferometers, enabling extreme momentum transfer for detecting dark matter and gravitational waves. This could facilitate breakthroughs in fundamental physics and future applications.
A team of researchers proposes detecting Q-balls in gravitational waves, which could explain the Big Bang's matter-anti-matter asymmetry. If successful, it would confirm a theory on why more matter was left over after the universe's first second.
A new study suggests that black holes grow in lockstep with the expanding universe, a phenomenon called cosmological coupling. This idea improves the explanation for large black hole masses observed in gravitational wave observatories.
A recent international workshop aimed to turn plans for a crewed lunar observatory into reality. The workshop, led by Vanderbilt astrophysicist Karan Jani, brought together experts from GW science, planetary science, and lunar exploration to discuss the geophysical properties of the moon and opportunities for observation.
Researchers at the University of Birmingham explore new approaches to detecting low-frequency gravitational waves using pulsars and other measurements. They suggest combining these methods with observations from projects like Gaia, which could help disentangle and interpret signals from the earliest periods of the universe.
The Quantum Sensors project aims to create ultrasensitive gyroscopes and accelerometers using quantum states, enabling precise measurements for self-driving cars and spacecraft. This technology could capture information not provided by GPS, improving navigation and stability in various environments.
A new study by LIGO reveals a new type of mirror coating made of titanium oxide and germanium oxide reduces background noise in mirrors by a factor of two. This allows for an eight-fold increase in the volume of space that can be probed, enabling more frequent detection of gravitational waves.
Researchers at RIT have developed a new method for detecting superfluid motion that is minimally destructive, in situ, and in real-time. The technique uses laser light to detect the frequency of superfluid rotation, enabling scientists to study superfluids without disrupting their motion.
A nearly $2 million NSF grant will accelerate the hunt for low-frequency gravitational waves using high-precision timing observations of exotic stars called millisecond pulsars. WVU's Maura McLaughlin is principal investigator on the project, which aims to discover new types of gravitational waves and expand the IPTA's reach globally.
Recent theoretical findings and astrophysical modeling suggest that scientists can accurately interpret gravitational wave signals from these events, hinting at the existence of so-called 'hierarchical' black holes. The detection of GW190521 in 2019 is thought to be the most promising candidate for such an event.
A team of researchers has developed a new AI framework that allows for accelerated and scalable detection of gravitational waves. The framework, built using NVIDIA GPUs, can process large datasets in real-time, enabling the detection of four binary black hole mergers in under seven minutes.
Researchers at MIT confirmed Hawking's area theorem for the first time by analyzing GW150914 signal, showing total event horizon area did not decrease after merger. The findings provide evidence that black holes behave as thermal objects and emit radiation over long timescales, a fundamental revelation about these cosmic phenomena.
Researchers confirmed detection of two rare events involving collision of black hole and neutron star, producing strong gravitational waves signals. The mergers involved massive objects with masses up to 9 solar masses and 1.9-solar-mass neutron stars, providing new information on binary systems and their properties.
West Virginia University is part of a team awarded $17 million from the National Science Foundation to renew the NANOGrav Physics Frontiers Center. The center aims to detect gravitational waves using pulsar timing arrays and will advance research in fundamental physics.
Researchers developed a new type of gravitational wave detector that can find small primordial black holes. The device uses a specific metal cavity and strong external magnetic field to detect high-frequency gravitational waves emitted by these hypothetical black holes.
Researchers aim to detect gravitational wave signals with frequencies 11 orders of magnitude below those detected by LIGO. The NANOGrav center will use radio pulsars and telescopes to search for a 'chorus' of signals from super-massive black hole mergers.
Researchers found that even with a small number of gravitational wave events, small modeling errors can accumulate and lead to misleading deviations from general relativity. This highlights the importance of considering theoretical model errors when testing Einstein's theory.
The LISA-Taiji network can constrain the Hubble parameter within 1% accuracy in just 5 years, potentially beating existing errors. Gravitational wave signals from compact binary coalescence offer a novel window for Hubble parameter determination.
A new approach using reimagined telescopes in both hemispheres could help study dark matter and gravitational waves. The BICEP/Keck array is exploring the possibility of increasing scan length to capture larger areas, yielding promising early results.
Scientists from the NANOGrav Collaboration detected very low-frequency gravitational waves with potential implications for dark matter research. The signals are consistent with phase transitions in the early universe and extremely light axion-like particles, considered promising candidates for dark matter.
Cygnus X-1 contains a 21-solar mass black hole, challenging how astronomers thought they formed. The black hole is more than 20 times the mass of our Sun, with its spin approaching the speed of light.
Burke-Spolaor plans to use the fellowship funding to launch exploratory projects on gravitational waves and fast radio bursts. She aims to expand her work internationally through partnerships with the International Pulsar Timing Array.
Researchers at NANOGrav Physics Frontiers Center have found intriguing low-frequency signal that may be attributable to gravitational waves. The signal is attributed to supermassive black hole pairs at the cores of merged, distant galaxies.
A new study using NASA's Chandra X-ray Observatory reveals that three galaxies colliding can lead to triple mergers with growing supermassive black holes. The research found one single, four double, and one triple merger system, shedding light on how these events shape galaxy growth.
Researchers on the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) project have detected a strong signal in their dataset, but cannot yet confirm it as the gravitational wave background. The team is hoping to pinpoint the source of the signal and gain insights into the universe through this discovery.
Researchers from NANOGrav used Arecibo Observatory and Green Bank Telescope to study pulsar signals, detecting minute changes in Earth's position possibly due to gravitational waves. The findings provide new insights into the universe and expand knowledge of gravity beyond current limits.
A team of researchers has developed a method to tease out primordial gravitational waves from gravitational-wave data. The new approach allows for the detection of faint signals that could reveal insights into the early universe's conditions and processes.
RIT scientists developed record-breaking simulations of unequal mass black hole mergers to aid the development of next-generation gravitational wave detectors. These simulations calculate key properties of merged black holes, enabling the comparison of signals received by advanced detectors.
Researchers use advanced simulation to model large mass ratio black hole merger, predicting characteristics of ultimate merged black hole and its speed. The simulation's success could help plan future gravitational wave detectors and answer mysteries about black holes.
Research reveals that quantum particles can break a key principle of classical physics when passing through gravitational waves, opening up new possibilities for advanced materials and devices. This finding has significant implications for the development of gravitational wave detectors and potential energy harvesting technologies.
Research reveals black holes emit complex signals when observed from their equator, indicating a unique relation between gravitational waves and black hole behavior. The team discovered that the final black hole's cusp emits more intense gravitational waves, producing multiple 'chirps' as it settles to its final form.
Researchers at LSU have developed a method to remove quantum backaction in gravitational wave detectors, improving sensitivity and enabling deeper astrophysical observations. The new technique uses a mirror the size of a human hair and shows promising results, with potential implications for LIGO and future GW detector upgrades.
The team aims to discover millisecond pulsars, exotic binary systems, and intermittent pulsars. Simulations predict the full survey will uncover 20-30 MSPs and 150-200 normal pulsars.
Researchers have detected a signal from the most massive black hole merger observed in gravitational waves, producing an 'intermediate-mass' black hole with a mass of up to 1,000 solar masses. The merger released energy equivalent to eight suns and has raised questions about the formation of such massive black holes.
The detection of GW190521 reveals the existence of intermediate-mass black holes, weighing in at 100 to 100,000 solar masses. This finding offers insights into the origin of supermassive black holes and raises new questions about their formation.
Scientists have observed the heaviest black hole merger yet, with a massive object forming through a previous merger of two smaller black holes. This discovery pushes the boundaries of our understanding of astrophysics and provides new opportunities to test Einstein's theory of general relativity.
Researchers have discovered the first intermediate-mass black hole, which has a mass of 142 solar masses. The cosmic event was detected as a brief gravitational wave signal, lasting less than one-tenth of a second, and is believed to have occurred roughly 7 billion years ago.
Researchers have inferred a tiny neutron star deformation, equivalent to a few micrometres, at a distance of 4500 light-years using the spin-down rate of a millisecond pulsar. This is the first direct detection of continuous gravitational waves from a deformed neutron star.
A team of international scientists discovered an asymmetrical double neutron star system, which could provide vital clues about the expansion rate of the universe. The finding uses the National Science Foundation's Arecibo Observatory's powerful radio telescope and builds upon a 2017 LIGO/Virgo discovery.
Researchers from UCL and international collaborators propose a detector using nano-scale diamond crystals to measure mid-frequency gravitational waves. The device would be 4000 times smaller than current detectors, enabling the study of black hole collisions and exploring nonclassical gravity.
Researchers at MIT's LIGO Laboratory measure quantum noise affecting 40-kilogram mirrors, displacing them by 10-20 meters, a confirmed prediction by quantum mechanics. The team uses a novel instrument called a quantum squeezer to isolate and quantify the quantum effect.
Researchers are using Jupiter's mass and orbit to help locate the center of gravity of the solar system, which can signal the presence of massive black holes. By analyzing changes in pulsar timing, they aim to detect gravitational waves that warp space-time.
Researchers have developed a method to detect the presence of weak gravitational wave events, revealing a lost 8 billion light years of universe evolution. This breakthrough will allow scientists to observe farther away in space-time and gain insights into the early universe's structure.
Researchers from the University of Helsinki have found strong evidence for the presence of exotic quark matter inside the cores of the largest neutron stars in existence. The new results were published in Nature Physics and combined recent findings from theoretical particle and nuclear physics with astrophysical measurements.
Researchers discovered black hole-neutron star mergers in globular star clusters can be detected using computer simulations. The study offers critical insights into the fusion of massive stellar objects, with potential implications for gravitational wave detection.
Physicists at Goethe University Frankfurt simulated merging neutron stars, predicting a clear signature of quark-gluon plasma in gravitational waves. This finding could provide evidence for the existence of the quark-gluon plasma in the present universe.
Researchers at NAOJ have demonstrated a new technique to reduce quantum noise in gravitational wave detectors, increasing sensitivity and allowing for the detection of fainter waves. This technique, known as frequency dependent vacuum squeezing, will enable improved sensitivity at both high and low frequencies simultaneously.
Physicists Rees McNally and Tanya Zelevinsky have proposed two novel methods of searching for dark matter by measuring tiny perturbations in fundamental constants. These methods involve using gravity sensors and LIGO gravitational wave detectors to detect a small extra 'push' or acceleration on normal matter caused by dark matter clumps.
A recent study suggests that supermassive black holes could have formed in just 50-100 million years after the Big Bang, thanks to the rapid migration of stellar black holes. This theory reconciles the short time required for their growth with the age of the Universe.
The new mirrors use a bimetallic effect to create precise actuation, reducing light loss and increasing detection capabilities. The technology is useful for next-generation detectors and allows the detection of new sources of gravitational waves.
A team of researchers proposes that gravitational waves could be evidence of a phase transition in the early universe, allowing for neutrino particles to reshuffle matter and anti-matter. This imbalance is thought to have prevented a complete annihilation of matter and anti-matter.
New study reveals that simultaneous X-ray and gravitational wave observations of supermassive black hole collisions will provide unprecedented insights into cosmic events. The European Space Agency's Athena and LISA missions, set to launch in the 2030s, will enable astronomers to study these phenomena in detail.
The new instrument has helped scientists pick out dozens of gravitational wave signals, including one from a binary neutron star merger. This extended range has enabled LIGO to detect gravitational waves on an almost weekly basis, with the detectors now reaching distances of over 400 million light years.