Articles tagged with Gravitational Waves
Researchers propose a new model that predicts far fewer primordial black holes than previously thought, which could be a strong candidate for dark matter. The study uses quantum field theory to explain the formation of these miniature black holes in the early universe.
Researchers propose a novel approach to correct the leading model of primordial black hole (PBH) formation, aligning with cosmic microwave background observations. This could imply fewer PBHs than expected, potentially affecting the dark matter theory and gravitational wave events.
The new software can detect gravitational wave signals from neutron star collisions more accurately, allowing for faster alerts and enabling further research. This improvement will help scientists better understand heavy element production, including gold and uranium, and the behavior of neutron stars.
Researchers developed a Kerr-enhanced optical spring to boost the sensitivity of next-generation gravitational wave detectors. The new design successfully amplifies signals without increasing intracavity power, opening up new avenues for unraveling the universe's mysteries.
Physicists have developed a new method to detect gravitational waves with extremely low frequencies, potentially revealing insights into the early universe. The technique analyzes pulsar data and has increased the
Physicists at the University of Southampton successfully detect weak gravitational pull on microscopic particles using a new technique. The experiment, published in Science Advances, could pave the way to finding the elusive quantum gravity theory.
Researchers have identified a population of massive stars stripped of their hydrogen envelopes by their companions in binary systems. These hot helium stars are believed to be the origins of hydrogen-poor core-collapse supernovae and neutron star mergers, shedding new light on a long-theorized phenomenon.
Scientists from UniSA, UoA and Yale University successfully scale up power in fibre lasers by three-to-nine times while maintaining beam quality. This breakthrough could have significant implications for remote sensing, gravitational wave detection and the defence industry.
Researchers at LIGO have developed a significant advance in quantum squeezing technology, allowing them to measure undulations in space-time across the entire range of gravitational frequencies detected by LIGO. This breakthrough boosts the observatory's ability to study exotic events and detect about 60 percent more mergers than before.
Researchers propose using gravitational wave searches to detect dark matter through neutron star effects. The study forecasts constraints on heavy dark matter particles within the next decade, offering a potential tool for testing dark matter theories.
A WVU astronomer is searching the Milky Way for debris left behind by supernovas, with $331,170 in NSF funding. He hopes to discover new supernova remnants using radio wavelength data from telescopes and machine-learning software.
Researchers report evidence of a cosmic background of gravitational waves likely produced by the merger of supermassive black hole binaries. The signal is detected through millisecond pulsar observations and has implications for our understanding of the universe's large-scale structure.
A team of Chinese scientists has found key evidence for the existence of nanohertz gravitational waves, marking a new era in nanohertz gravitational wave research. The detection will help astronomers understand the formation of universe structures and investigate supermassive black holes.
A team of researchers has proposed a new method to measure the cosmic expansion by studying gravitational waves. The method involves counting repeat black hole mergers and analyzing the delay between them, allowing for accurate measurement of the universe's expansion rate.
Researchers from West Virginia University have made a groundbreaking discovery by detecting evidence of low-frequency gravitational waves, which can only be perceived with a detector much larger than the Earth. The signal was detected using pulsar timing arrays and has significant implications for understanding spacetime dynamics.
A team of scientists from UNIGE, Northwestern University, and the University of Florida used POSYDON code to simulate binary-star populations, predicting the existence of massive 30 solar mass black hole binaries in Milky Way-like galaxies. This challenges previous theories and provides new insights into the astrophysical origins of me...
Researchers from the University of Florida have discovered evidence for gravitational waves at very low frequencies, consistent with Einstein's theory. The detection uses a network of radio telescopes to capture millisecond pulsars and create a galaxy-scale gravitational-wave detector.
Researchers have found key evidence for the existence of nanohertz gravitational waves through pulsar timing observations. The Chinese Academy of Sciences has detected quadrupole correlation signatures compatible with nanohertz wave predictions at a 4.6-sigma statistical confidence level.
Researchers have found evidence for gravitational waves oscillating with periods of years to decades, consistent with slowly undulating waves passing through the Galaxy. The signal was observed using a collection of cosmic clocks called pulsars, which are ultra-dense remnants of massive stars' cores.
Researchers with the NANOGrav collaboration have detected the gravitational wave background for the first time, revealing a perpetual chorus of ripples in space-time. The discovery is made possible by observing stars called pulsars that act as celestial metronomes.
A multiyear NSF project led by OSU scientists has found evidence of low-frequency gravitational waves permeating the universe. The 'chorus' of gravitational waves was discovered using radio pulsar timing and reveals that they are a ubiquitous physical phenomenon.
Researchers using CSIRO's Parkes radio telescope have found strongest evidence yet for low-frequency gravitational waves, providing further insight into Einstein's general theory of relativity. The discovery, published in several journal papers, has also sparked collaboration among international teams searching for similar signals.
The NANOGrav team has detected a collective hum of gravitational waves from merging supermassive black holes, providing evidence for a background undulation in spacetime. The signal is thought to be generated by huge black holes at galaxy centers, producing low-frequency gravitational waves that oscillate slowly over years and decades.
A team of researchers using radio telescope observations found evidence of gravitational waves passing through the Milky Way, causing spacetime distortions that appear as variations in pulsar ticking rates. The discovery provides insights into how galaxies evolve and supermassive black holes grow and merge.
A recent study suggests that supermassive black holes at the center of large galaxies grew in size over billions of years, challenging previous estimates. The research, led by astrophysicist Joseph Simon, used computer simulations to predict the masses of massive black holes, revealing a diverse range of sizes across the universe.
Researchers at University of the West of Scotland develop groundbreaking thin film technology to enhance gravitational wave detector sensitivity. The innovation could unlock new avenues for discovery and accelerate scientific progress in this field.
Astrophysicists suggest that the cocoons surrounding dying massive stars could be a new source of gravitational waves. These cocoons are turbulent, energetic places where hot gases and debris mix randomly and expand in all directions from the jet, perturbing space-time to create ripples of gravitational waves.
Researchers have developed a quantum simulator to study curved spacetime, demonstrating phenomena such as gravitational lensing effects in atomic clouds. This new tool provides a deeper understanding of the connection between relativity and quantum theory.
Kavli Institute researchers found that oscillon decay can generate detectable gravitational waves, offering a novel test of early Universe dynamics. This discovery provides a new window into the earliest moments of the Universe and may help address pressing cosmological questions.
A team of researchers developed a self-checking deep learning system that accurately extracts information from gravitational-wave data. The algorithm, called DINGO, has been trained to interpret real data and can cross-check its own results for accuracy.
The Indian government has granted final approvals for LIGO-India, a gravitational-wave detector that will improve the localization of sources. The facility will join a global network, increasing precision and filling blind spots, enabling scientists to study black holes and the universe's expansion.
Astronomers have mapped the M87 galaxy's 3D structure and determined its supermassive black hole has a mass of 5.37 billion times that of the sun. The galaxy's asymmetrical shape allows for more precise measurements, including the rotation rate of 25 kilometers per second around an axis 40 degrees from the long axis.
Space-based gravitational wave observatories offer longer arm lengths, enabling detection of low-frequency GWs. Configuration design and stability control are key factors for success, with geocentric configurations showing promise due to their simplicity and ease of deployment.
Researchers propose using a constellation of space interferometers to map the flat and almost perfectly homogeneous background signal, detecting subtle fluctuations known as anisotropies. These fluctuations hold information on the distribution of gravitational wave sources on the largest cosmological scale.
Researchers have discovered a possible correlation between gravitational waves from neutron star mergers and fast radio bursts, two phenomena long shrouded in mystery. The study found that an observed FRB occurred just 2 ½ hours after a neutron star merger event, suggesting a potential link between the two events.
Researchers detected significant thermospheric fluctuations with multiple wave modes after the Tonga eruption, affecting global neutral density up to 500 km altitude. The study suggests that gravitational waves, Lamb waves, and tsunami waves may transmit energy upward, influencing thermospheric density.
Researchers at Johns Hopkins University have conducted simulations of two black holes colliding near the speed of light, producing a remnant black hole and gravitational waves. The study reveals nonlinear effects that cannot be studied with linearized equations, suggesting current models need to be revised.
A new model developed by researchers at Columbia University and the University of Mississippi improves the accuracy of gravitational wave analysis by including nonlinear interactions. This enhanced modeling method will help scientists better understand the structure of merging black holes and test Einstein's theory of general relativity.
Researchers have developed a new model of black hole collisions that reveals nonlinear effects in gravitational waves, allowing for more accurate modeling of the behavior. This breakthrough has significant implications for understanding black hole collisions observed by LIGO and testing Einstein's general theory of relativity.
A recent study has found that kilonovae explosions are shaped like perfect spheres, contradicting previous assumptions. The discovery may provide a new method for measuring the Universe's age, complementing existing methods and offering greater precision in distance measurements.
Astronomers have discovered two ghostly Goliath black holes just 750 light-years apart, closing in on a cataclysmic meeting. The estimated population of merging supermassive black holes may be surprisingly high, generating strong gravitational waves detectable by future telescopes.
Researchers used 69 confirmed binaries to test two origin stories of black holes, but found that the current catalog is not enough to reveal anything fundamental about their formation. The study suggests that the universe's spin and tilt can be 'spun' in different ways depending on the model used.
A recent gamma-ray burst has been identified as a kilonova, shedding light on the merging of neutron stars and black holes. The event produced an excess of infrared light and lasted about a minute, contradicting the typical short duration of such explosions.
Gravitational wave observatories LIGO and Virgo captured a signal in 2019 that differed from previous measurements. Researchers found an alternative explanation: the collision occurred on a strongly eccentric path, where one black hole was initially free to move before being captured by another's gravitational field.
According to new research led by the University of Bath, some short-duration gamma-ray bursts are triggered by the birth of supramassive stars, not black holes. This discovery may offer a new way to locate neutron star mergers and gravitational wave emitters.
Researchers have developed a new model that combines nuclear physics and string theory to describe the transition to dense and hot quark matter in neutron star collisions. The model allows for the calculation of gravitational-wave signals, showing that both hot and cold quark matter can be produced.
The discovery confirms the existence of precession in a binary black hole system, where one black hole distorts space-time and causes its orbit to wobble back and forth. This effect is 10 billion times stronger than previously measured, providing insights into Einstein's theory of general relativity.
Researchers at the University of Birmingham have developed a new model to better understand the impact of oscillations in binary neutron stars on gravitational wave detection. This could significantly improve our understanding of neutron stars and their properties.
Researchers from ETH Zurich conducted a new experiment to redetermine the gravitational constant G, obtaining a value 2.2% higher than the current official figure. The team used a dynamic measurement method involving resonating beams, allowing for real-time data analysis and minimization of interference.
A new study by the POLARBEAR collaboration provides a new correction algorithm that allows for almost double the amount of reliable data on Cosmological Gravitational Waves (CGWs), produced during Inflation in the early Universe. This enhances our understanding of the signal and brings us closer to observing CGWs.
A University of Helsinki research team used holographic duality to model early universe phase transitions and their potential impact on gravitational wave signals. The study, published in Physical Review Letters, suggests that such collisions could create powerful ripples in spacetime detectable by satellite missions like LISA.
Astronomers used over a decade of Fermi data to search for signs of long gravitational waves from supermassive black hole pairs. Although no waves were detected, the analysis shows that with more observations, these waves may be within Fermi's reach.
Astronomers have been searching for low-frequency gravitational waves by monitoring pulsar pulses, but now NASA's Fermi Gamma-ray Space Telescope can also be used to detect these waves. The satellite's high-energy light provides a clearer view of pulsars and offers an independent method to detect gravitational waves.
A new paper by Adele La Rana details the history of EUROGRAV, a planned array interferometer gravitational wave detector built in Europe in the late 1980s. The project failed due to various reasons, including the fall of the Berlin Wall and economic downturn in the UK.
Researchers from UAB and UCL propose using the Earth-Moon System as a natural gravitational wave detector, capable of detecting signals from the early universe. By analyzing minute deviations in the Moon's orbit, they aim to uncover secrets about the cosmos.
Recent research on gravitational wave detectors shows large objects can be shielded from environmental influences to become one quantum object. This decoupling enables measurement sensitivities impossible without it, advancing sensor technology.
Researchers at Brookhaven Lab propose a cosmological phase transition as the key to supermassive black hole formation in the early universe. This process, facilitated by ultralight dark matter particles, enabled efficient collapse of matter into black holes.
Researchers propose a new mechanism for eccentric black hole mergers, suggesting that interactions between three black holes in a flat disk environment could lead to chaotic orbits. This finding challenges previous studies on the rarity of such events.
Researchers used simulations to compare Einstein's theory and modified gravity, finding that 'dark gravity' may be equally good at explaining data from binary neutron star collisions. This could lead to the discovery of new phenomena detectable by next-generation gravitational interferometers.
A recent analysis of the 2017 GW170817 merger suggests that a rapid spin delay may have prolonged the merger, producing excess X-ray emissions. The radiation is thought to be produced by shocked material in the circumbinary medium, hinting at a bounce from the delayed collapse.