Articles tagged with Gravitational Waves
Physicists Lawrence Krauss and Frank Wilczek suggest measuring minute changes in the cosmic background radiation could detect telltale effects of gravitons. They propose that gravitons exist as 'quantum fluctuations' during inflation, generating gravitational waves that affect CMB polarization.
Scientists at Rochester Institute of Technology will simulate extreme black holes with support from a $525,000 grant. Their contributions will help advance the international effort to confirm the existence of gravitational waves and black holes, anticipating new field discoveries.
Physicists at the University of Warsaw and Hanover demonstrate that experimentally available squeezed states are optimal for improving the precision of measurements in gravitational wave detectors. This breakthrough improves sensitivity by up to 30%, allowing for more accurate detection of subtle spacetime vibrations.
A recent study using gravitational wave data from the Parkes radio telescope has challenged existing theories on supermassive black hole growth. The researchers tested four models of black-hole growth against observational data, effectively ruling out one model and pushing others to re-evaluate their predictions.
Researchers used gravitational wave data to test models of supermassive black hole growth, ruling out one model and leaving three others as possibilities. The study provides new insights into the growth of massive black holes, shedding light on a long-standing astronomical question.
Researchers at Montana State University have discovered a universal relation among three intrinsic properties of neutron stars: moment of inertia, Love number, and quadrupole moment. This finding enables astrophysicists to infer the shape and degree of deformation without detailed internal structure knowledge, aiding gravitational wave...
Astronomers at the University of Warsaw discovered that stellar monsters with masses 200-300 times that of our Sun will not collide until billions of years from now. Due to their large distance apart and lack of expansion, there is no mechanism for their orbit to tighten, making a spectacular collision impossible.
Researchers at University of Nevada, Reno propose a new method to detect gravitational waves from the far reaches of the universe. The device, which uses optically levitated sensors, has the potential to exceed existing detectors' sensitivity by an order of magnitude.
A newly-discovered pulsar and its white-dwarf companion have provided physicists with a unique opportunity to study the nature of gravity, with General Relativity predictions holding up well under extreme conditions. The system's unique characteristics make it an unprecedented test for alternative theories of gravity.
Scientists at NASA's Goddard Space Flight Center are developing atom-optics technology to directly detect gravitational waves, which could revolutionize astrophysics. The technology uses atomic interferometry to measure minute changes in space-time.
Researchers used computer simulations to explore the mergers of supersized black holes, revealing a 'funnel-like structure' that could drive particle jets. The study sheds light on the universe's most extreme phenomena, including gravitational waves, black holes, and the death of stars.
Researchers from Cardiff University found that the different tones of a dying black hole can provide insight into its mass and spin. By analyzing these tones, scientists may be able to weigh two black holes after they've collided and merged, potentially testing Einstein's general theory of relativity.
A team of astronomers has detected gravitational waves at optical wavelengths in light from a pair of eclipsing white dwarf stars. The effect, predicted by Einstein's theory of general relativity, causes the stars to inch closer together and orbit each other faster.
Researchers use pulsars to test General Relativity in extremely strong gravity and directly detect gravitational waves. Pulsar timing arrays may reveal evidence for cosmic strings and the early Universe.
Astronomers have discovered a correlation between gravitational wave events and radio flares, enabling them to pinpoint the source of these cosmic occurrences. By analyzing surrounding interstellar material, researchers can verify that detected gravitational waves come from specific regions of space.
Researchers from Max Planck Society and Leibniz University Hannover have successfully applied the 'squeezed light' method to improve the sensitivity of the GEO600 gravitational wave detector. This new technology reduces shot noise by a factor of two, allowing for more accurate measurements of tiny changes in space-time.
The study, published by Professor Bernard Schutz, demonstrates that an additional detector would more than double the detection rate of gravitational waves. The new network could detect around 370 events per year, increasing to 500 events after a few years of operation.
Researchers have developed conceptual tools to visualize warped space-time, discovering vortex lines and tendex lines that describe gravitational forces. These tools allow for a better understanding of black holes, gravity, and the universe, enabling predictions of gravitational waves and solving long-standing mysteries.
A newly merged black hole can be detected by observing the tidal disruption of surrounding stars, which will provide accurate distances and precise sky coordinates. This could lead to a better understanding of dark energy and Einstein's general theory of relativity.
A new study predicts where neutron star mergers are likely to occur in the local galactic neighborhood, providing valuable information for researchers at gravitational-wave detectors. The predictions suggest that astronomers might not want to look in the nearest galaxies for optical counterparts of gravitational waves.
A Princeton scientist has recast two well-known math problems as physics questions, providing new tools for solving challenges in data compression, gravitational waves, and more. The reformulation offers insights into the role of randomness and disorder.
Researchers are tracing electromagnetic signatures back to the impact of colliding black holes to detect them with ordinary visible light. They're creating a detailed blueprint for future scientists and simulating mergers to aid in gravitational wave discovery, proving general relativity.
Astronomers discovered that the first super-massive black holes formed when galaxies collided and merged together, contrary to hierarchical structure formation. These simulations reveal details of the merged galaxies on a scale of less than a light year.
Researchers explore cosmic microwave radiation as favored method to detect primordial gravitational waves, offering a potentially new probe of early universe cosmology. The discovery could provide a dramatic new window on the origin and evolution of the universe.
Astronomers have created a breakthrough in finding natural cosmic tools to detect gravitational waves. Gamma-ray telescopes have guided radio astronomers to specific locations in the sky where they can discover new millisecond pulsars, which can serve as precise and stable clocks for detecting gravitational waves.
Radio astronomers discovered 17 millisecond pulsars using Fermi's high-energy sources, which could be used to detect gravitational waves. These pulsars are nature's most precise clocks, with long-term stability that rivals human-made atomic clocks.
The LIGO Scientific Collaboration and Virgo Collaboration have set the most stringent limits yet on the amount of gravitational waves that could have come from the Big Bang. The analysis of data taken over a two-year period has constrained current theories about universe formation, including models of cosmic strings and superstrings.
A new analysis by LIGO and Virgo Collaborations has set the most stringent limits yet on gravitational waves from the Big Bang, offering insight into the universe's earliest history. The study constrains models of cosmic strings and provides new constraints on the behavior of the infant universe.
Researchers from Penn State and LIGO Scientific Collaboration have put new constraints on the details of the universe's earliest moments, setting limits on gravitational waves that could have come from the Big Bang. The analysis provides vital clues to understanding how the structure of the universe evolved.
Researchers have successfully cooled LIGO mirrors to near absolute zero, enabling the observation of quantum mechanical behavior at massive scales. This breakthrough suggests that interferometric gravitational wave detectors can also become sensitive probes of macroscopic quantum mechanics.
The NIST super-sensors will look for subtle fingerprints in the cosmic microwave background from primordial gravitational waves, potentially detectable today. A detection would provide clear evidence for the inflation theory and insights into string theory models.
The Einstein@Home project is analyzing Arecibo radio data to find binary systems consisting of neutron stars or black holes. The large computational capabilities of the project will enable detection of pulsars in binary systems with orbital periods as short as 11 minutes.
The Sherman Fairchild Foundation has awarded $3.1 million to Caltech to support the SXS program, which simulates black hole collisions and neutron star ruptures with high accuracy using the Spectral Einstein Code (SpEC). The grant will enable the team to perfect SpEC and simulate other warped-spacetime phenomena.
Researchers used LIGO data to analyze the Crab Pulsar, detecting signals that reveal no more than 4% of energy loss is due to gravitational radiation. The findings suggest other mechanisms, such as electromagnetic radiation and high-velocity particles, are responsible for the pulsar's slowing spin.
The study reveals that no more than 4% of energy loss is caused by gravitational waves, disproving a key hypothesis. The analysis provides valuable information about the pulsar and its structure, shedding light on the role of gravitational waves in its dynamics.
Researchers with the Laser Interferometer Gravitational Wave Observatory Scientific Collaboration have ruled out emission of gravitational waves as a cause for the Crab Pulsar's spin braking. The study found that no more than 4% of the pulsar's energy loss is attributed to gravitational wave emission.
An international team, including University of Oregon scientists, suggests two possible explanations for the lack of a gravitational wave signal in February's gamma ray burst from Andromeda. The findings propose either a merger event beyond Andromeda or a soft gamma-ray repeater within Andromeda as potential origins.
A team of UWM researchers is analyzing data from the Laser Interferometer Gravitational-wave Observatory, searching for signs of Einstein's predicted gravitational waves. The team is using advanced computational power to sort through massive amounts of data generated by LIGO facilities.
Cosmic superstrings, predicted by string theory, are thought to be ultra-thin tubes of energy left from the universe's beginning. They can emit gravitational waves as they decay, adding a new soundtrack to astronomy's silent movie.
The HETE-2 satellite has solved the mystery of short gamma-ray bursts, revealing colliding compact stars as their likely cause. The discovery provides significant findings, including first observations of optical afterglows and secure measurements of distance to a short burst.
Astronomers observed a binary star system called RX J0806.3+1527, where the white dwarf pair has an estimated mass of one-half the sun and orbits at a rate consistent with gravitational wave predictions. The system is believed to be among the brightest sources of gravitational waves in the galaxy.
Rob Myers and Eric Poisson, two prominent physicists, have been awarded the CAP prize for their outstanding contributions to gravitational physics and string theory. Their work has significantly impacted foundational questions in string theory and gravitational waves, with implications for future research.
The Einstein@Home project enlists thousands of home computers to analyze data from LIGO and GEO-600 detectors, searching for subtle ripples in space-time predicted by Einstein's General Theory of Relativity. By involving hundreds of thousands of people, the project aims to discover gravitational waves and validate theoretical physics.
The Einstein@Home project searches data from US and European gravitational wave detectors for signals from rapidly rotating compact quark and neutron stars. The project utilizes an army of home computer users to analyze the data, requiring enormous computational power.
The LISA mission will detect low-frequency gravitational waves from the merger of compact objects like stellar-size black holes and neutron stars. By measuring tiny changes in the motion of freely falling test masses, scientists can study these events with unprecedented precision.
Professor Jim Hough of the University of Glasgow believes that gravitational waves will be detected in the near future due to advancements in instrument technology. The UK's GEO 600 device has shown promising results, and its innovations are being considered by LIGO for implementation.
Theoretical physicists propose a new test to verify string theory, which could provide support within two years. The test involves detecting the gravitational signature of leftover cosmic strings from the universe's creation.
Gravitational waves are ripples in space-time produced by massive objects' acceleration. The detection of these waves will provide unique information about astrophysical systems like supernovae and black hole formation.
Astronomers detected two active black holes at the center of galaxy NGC 6240 using NASA's Chandra X-ray Observatory. The binary black hole system will eventually merge, producing massive gravitational waves detectable by LISA.
Researchers have developed a computer model to visualize gravitational waves produced by black-hole mergers, providing insight into Einstein's theory of general relativity. The model predicts that the waves will be relatively weak until moments before the merger, culminating in a thunderous impact.
A new MIT model proposes that cosmic explosions may be triggered by a cosmic tango between a black hole and its companion, a spinning torus of stellar material. The model suggests that the energy released during this dance could explain recent observations of gamma-ray bursts.
The center supports an interdisciplinary team of scientists aiming to explore the first signals detected from gravitational waves generated by massive objects in the universe. Researchers anticipate collecting data from new detectors in the US, Europe, and Japan, plus a space-based detector.
The Lazarus Team has made predictions for the gravitational waves emitted during black hole mergers, allowing for the first-ever detections. These simulations will provide astronomers with a set of templates to recognize signals in noise from detectors and deduce the masses and distances of the holes.
Scientists are using lasers to detect gravitational waves, which could help study dark matter and unlock the universe's secrets. The technique involves splitting a laser beam into two halves and comparing them for minute movements caused by space stretching.
Researchers from Max Planck Institute simulated grazing collisions of two black holes, finding huge amounts of energy coalescing black holes emit in gravitational waves. The simulations revealed that these events could release one percent of the combined mass's energy, a phenomenon thousand times more powerful than our sun's emissions.
A powerful numerical simulation reveals that gravitational waves from merging neutron stars can be detected by highly specialized detectors. The simulation, which included relativistic radiation reactions, showed tidal arms forming during the merger, significantly altering the dynamics and energy of the event.