#frame dragging

[grrlmusic]

Arthur Robert - Frame Dragging

[mvaljean525]

The way the fabric of space and time swirls in a cosmic whirlpool around a dead star has confirmed yet another prediction from Einstein's theory of general relativity, a new study finds.

That prediction is a phenomenon known as frame dragging, or the Lense-Thirring effect. It states that space-time will churn around a massive, rotating body. For example, imagine Earth were submerged in honey. As the planet rotated, the honey around it would swirl — and the same holds true with space-time.

----

Space.com

----

Graphic - Wassily Kandinsky  1866-1944

[skycrorg]

The loudest black hole collision ever recorded just gave us something nobody had seen before For the first time, scientists have detected a direct wave hidden within the gravitational signal of GW250114 — the loudest black hole merger ever recorded. The signal carries information from the edge of the event horizon itself.... https://skycr.org/2026/06/27/loudest-black-hole-collision-direct-wave-event-horizon-gw250114/

The loudest black hole collision ever recorded just gave us something nobody had seen before

[whats-in-a-sentence]

The effect is called frame dragging because from the point of view of the asteroid – from its frame of reference – it isn't being whipped around at all. Instead, it's falling straight down along the spatial grid, but because space is swirling (as in Figure 14.1) the grid gets twisted, so the meaning of "straight down" differs from what you'd expect based on a distant, nonswirling perspective.

"The Fabric of the Cosmos" - Brian Greene

[tenth-sentence]

This is known as frame dragging and implies, for example, that an asteroid freely falling toward a rapidly rotating neutron star or black hole will get caught up in a whirlpool of spinning space and be whipped around as it journeys downward.

"The Fabric of the Cosmos" - Brian Greene

[complexdistractions]

Steve Moore : Frame Dragging

Steve Moore : Frame Dragging

You can pretty much count on Steve Moore to release amazing music on a consistent basis; whether he’s scoring films, releasing solo work, dropping mind melters with AE Paterra in Zombi, dabbling in dance pop with Miracle, or even giving us something as out there as the groovy Lovelock. Steve Moore is always working on his craft and pushing the limits of his sonic world.

His sound palate stretches…

View On WordPress

[spacetimewithstuartgary]

Astronomers witness the dragging of space-time in stellar cosmic dance An international team of astrophysicists led by Australian Professor Matthew Bailes, from the ARC Centre of Excellence of Gravitational Wave Discovery (OzGrav), has found exciting new evidence for ‘frame-dragging’—how the spinning of a celestial body twists space and time—after tracking the orbit of an exotic stellar pair for almost two decades. The data, which is further evidence for Einstein’s theory of General Relativity, is published today (31 January 2020) in the prestigious journal, Science. More than a century ago, Albert Einstein published his iconic theory of General Relativity – that the force of gravity arises from the curvature of space and time and that objects, such as the Sun and the Earth, change this geometry. Advances in instrumentation have led to a flood of recent (Nobel prize-winning) science from phenomena further afield linked to General Relativity. The discovery of gravitational waves was announced in 2016; the first image of a black hole shadow and stars orbiting the supermassive black hole at the centre of our own galaxy was published just last year. Almost twenty years ago, a team led by Swinburne University of Technology’s Professor Bailes—director of the ARC Centre of Excellence in Gravitational Wave Discovery (OzGrav)—started observing two stars rotating around each other at astonishing speeds with the CSIRO Parkes 64-metre radio telescope. One is a white dwarf, the size of the Earth but 300,000 times its density; the other is a neutron star which, while only 20 kilometres in diameter, is about 100 billion times the density of the Earth. The system, which was discovered at Parkes, is a relativistic-wonder system that goes by the name ‘PSR J1141-6545’. Before the star blew up (becoming a neutron star), a million or so years ago, it began to swell up discarding its outer core which fell onto the white dwarf nearby. This falling debris made the white dwarf spin faster and faster, until its day was only measured in terms of minutes. In 1918 (three years after Einstein published his Theory), Austrian mathematicians Josef Lense and Hans Thirring realised that if Einstein was right all rotating bodies should ‘drag’ the very fabric of space time around with them. In everyday life, the effect is miniscule and almost undetectable. Earlier this century, the first experimental evidence for this effect was seen in gyroscopes orbiting the Earth, whose orientation was dragged in the direction of the Earth’s spin. A rapidly spinning white dwarf, like the one in PSR J1141-6545, drags space-time 100 million times as strongly! A pulsar in orbit around such a white dwarf presents a unique opportunity to explore Einstein’s theory in a new ultra-relativistic regime. Lead author of the current study, Dr Vivek Venkatraman Krishnan (from Max Planck Institute for Radio Astronomy - MPIfR) was given the unenviable task of untangling all of the competing relativistic effects at play in the system as part of his PhD at Swinburne University of Technology. He noticed that unless he allowed for a gradual change in the orientation of the plane of the orbit, General Relativity made no sense. MPIfR’s Dr Paulo Friere realised that frame-dragging of the entire orbit could explain their tilting orbit and the team presents compelling evidence in support of this in today’s journal article—it shows that General Relativity is alive and well, exhibiting yet another of its many predictions. The result is especially pleasing for team members Bailes, Willem van Straten (Auckland University of Tech) and Ramesh Bhat (ICRAR-Curtin) who have been trekking out to the Parkes 64m telescope since the early 2000s, patiently mapping the orbit with the ultimate aim of studying Einstein’s Universe. ‘This makes all the late nights and early mornings worthwhile’, said Bhat.

[astroblogs]

Witte dwergster vlakbij pulsar sleept de omringende ruimtetijd met zich mee

Witte dwergster vlakbij pulsar sleept de omringende ruimtetijd met zich mee

Impressie van PSR J1141-6545, welke ontdekt is met CSIRO’s Parkes radio telescoop (links te zien). Rechts de witte dwerg en de pulsar met z’n zwiepende jets. Credit: Mark Myers/ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav), Australia.

Sterrenkundigen hebben in een dubbelstersysteem, een extreme combinatie van een witte dwerg en een pulsar, een effect kunnen meten dat volgt…

View On WordPress