spacetime

Exploring the possibility of probing fundamental space-time symmetries via gravitational wave memory

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Model selection between the original BMS symmetries (dashed lines) and the extended BMS symmetries (solid lines) with Einstein Telescope (ET) and Cosmic Explorer (CE). Evidence for the simulated symmetry group (log Bayes factor) is shown against observation time. Credit: Physical assessment letters (2024). DOI: 10.1103/PhysRevLett.132.241401 As predicted by general relativity, the passage of gravitational waves … Read more

Beyond Einstein: Exploring spacetime via Finsler geometry

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SciTechDaily

Sjors Heefer’s PhD research investigates gravitational waves and spacetime using Finsler geometry, with the aim of reconciling general relativity with quantum mechanics. His findings support the Finslerian nature of spacetime, in line with observations of gravitational waves. Credit: SciTechDaily.com Investigations gravitational waves and their relationship with Finsler geometry provide new insights into spacetime and suggest … Read more

Gravitational waves and the geometry of spacetime

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This article was reviewed according to Science fact checked trusted source proofread OK! Credit: Pixabay/CC0 public domain × close to Credit: Pixabay/CC0 public domain When talking about our universe, it is often said that “matter tells spacetime how to bend, and curved spacetime tells matter how to move.” This is the essence of Albert Einstein’s … Read more

The rotation speed of black holes revealed in new research into swirling space-time

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An artist

The ‘wobbly’ remains of a star that died a gruesome death in the maw of a supermassive black hole have helped reveal the speed at which its cosmic predator spins. Supermassive black holes are believed to form from successive mergers of smaller black holes, each of which brings with it an angular momentum that accelerates … Read more