gravitational-waves

A new detector-based method clarifies how gravitational waves should be measured in an evolving universe. Imagine trying to measure a ripple on the surface of a pond while the pond itself is slowly changing shape. That is the challenge scientists face when they study gravitational waves not as isolated signals from colliding black holes, but [...]

Hubble’s latest image of galaxy cluster MACS0329-0211 reveals a powerful gravitational lens that is magnifying some of the most distant galaxies ever observed.

A new gravitational-wave catalogue reports 161 additional black hole mergers, bringing the total to 390 detections. Scientists at the University of Glasgow’s Institute for Gravitational Research are celebrating the release of a major new collection of gravitational wave discoveries, a milestone that highlights the rapid growth of gravitational astronomy. The latest Gravitational Wave Transient Ca…

Scientists believe an unusual LIGO detection may be evidence of a primordial black hole, potentially linking these long-theorized objects to the mystery of dark matter. Scientists at the University of Miami believe they may be closing in on evidence for one of the most elusive objects in the universe: primordial black holes. While definitive proof [...]

OzGrav is delighted to congratulate Professor David Blair, one of Australia’s pioneering gravitational-wave physicists, on being appointed an Officer of the Order of Australia (AO) in the 2026 King’s Birthday Honours. Professor Blair was recognised for his distinguished service to physics, precision measurement science, gravitational-wave research and scientific education. A founding figure in Au…

In early 1987, a team led by MIT’s Jacqueline Hewitt was imaging radio-emitting objects with the Very Large Array radio telescope as part of a gravitational lens survey. The unusual appearance of object MG1131+0456 – an oval with elongated bright spots at the ends – led to further investigation, and the researchers eventually concluded it Continue reading "June 9, 1988: First image of an Einstein…

See also: Including strange quarks: Including sigma-meson and omega-meson: Observation of gravitational waves coincident with electromagnetic radiation from merging neutron stars: Discussion of models of neutron stars by Skyrmions: C. Adam, Carlos Naya, J. Sanchez-Guillen, R. Vazquez, A. Wereszczynski, BPS Skyrmions as neutron stars, Physics Letters B Volume 742, 6 March 2015, Pages 136-142 (arXi…

Hello, I am Andrew Jeremiah, an independent researcher from Brazil with a background in architecture. I have developed a geometric framework for emergent gravity — Quantum Granodynamics of Spacetime (QGDS) — in which spacetime is modeled as a collection of topological boundaries between two... Read more

A pair of stars spiraling around each other. That’s the origin of a new source of repeating radio bursts we’ve detected, called ASKAP J1745. In recent years, astronomers have been puzzling over mysterious bursts of radio signals, known as long-period transients because of how slowly they repeat. They were first discovered by chance with telescopes […] The post Mysterious signals keep coming from …

Gravitational-wave detection provides humanity with unique access to extreme astrophysical and cosmological phenomena. In space-based missions, however, the Doppler frequency pulling induced by orbital motion severely limits the precise extraction of gravitational-wave signals. This work shows that by introducing properly designed low-pass filters into established laser arm-locking systems, it is…

Gravitational waves are tiny ripples in spacetime. Their first direct detection in 2015 marked a revolutionary moment in astronomy. Today, we have a thorough understanding of signals that travel far from their sources through quiet, nearly empty space, such as those emitted when black holes merge. In this case, the wave can be considered a […]

Researchers discovered a closely orbiting pair of supermassive black holes in Markarian 501 by tracking two jets of particles. The binary system could merge within 100 years and may produce detectable gravitational waves. Current evidence indicates that nearly every large galaxy contains a supermassive black hole at its center, with a mass ranging from millions [...]

They punch above their weight The post See the Gravity Waves from a Super Typhoon appeared first on Nautilus .

Nature Astronomy, Published online: 01 June 2026; doi:10.1038/s41550-026-02856-z The mass spectrum of binary black-hole mergers has been expected to show a ‘mass gap’ above 45 solar masses, consistent with the physics of pair-instability supernovae. An extensive catalogue of gravitational-wave detections reveals a high-spin population above this threshold that probably results from repeated black…

A complete derivation of gravitational lensing and gravitational slingshot phe- nomena is constructed exclusively from the internal variational structure of a closed quartic Ψ/Γ functional without introducing fundamental spacetime curvature, grav- itational fields, geodesic postulates, externally imposed metrics, or Einstein equa- tions. Starting from the exact quartic variational object, the wor…

Researchers at the University of Alabama in Huntsville have found a new way to measure the mass of neighbouring galaxies using pulsars. Using the universe's most precise natural clocks it’s possible to detect tiny gravitational disturbances rippling through the Milky Way. By analysing 54 millisecond pulsars, the team directly measured the gravitational pull of both the Large Magellanic Cloud and …

Gravitational waves point to a multifaceted assembly line for the cosmic oddities The post The Many Ways to Build a Black Hole appeared first on Nautilus .

Of all the objects in the Universe, few are as perplexing as black holes. Over...

A record-setting collection of precisely measured gravitational waves reveals new information about how black holes behave and evolve