Watching a black hole flicker in time
Peer-Reviewed Publication
Updates every hour. Last Updated: 1-Nov-2025 14:12 ET (1-Nov-2025 18:12 GMT/UTC)
Researchers from China present a new framework to simulate how black hole images change over time, focusing on rotating regular black holes with nonsingular cores. Using spatio-temporal random fields and efficient light ray tracing, the model captures realistic brightness fluctuations, turbulence, and light-travel effects around the black hole. The simulated results reproduce time-varying features like the shifting bright ring seen in M87*, offering a fast, physically grounded alternative to full GRMHD simulations and paving the way for future dynamic black hole imaging studies.
Distribution-type membrane reactors are expected to be highly promising for carbon dioxide methanation reaction. In a recent breakthrough, a group of scientists from Shibaura Institute of Technology, Japan, has demonstrated the efficacy of these reactors and also examined the effect of membrane properties on reaction parameters. The present findings are a significant step towards a greener, cleaner, and more sustainable future.
A research team proposes a three-dimensional quantum anomalous Hall effect (3D QAHE) in Weyl semimetals (WSMs) by introducing Rashba spin-orbit coupling. This new state supports chiral surface and hinge states along different spatial directions, with Hall resistance switching between 0, h/e², and ±h/e², offering potential for energy-efficient devices and in-memory computing.
Scientists have paved the way for next-generation quantum circuits by successfully making a semiconducting element commonly used in electrical devices superconducting.
A research team from The University of Queensland and New York University have shown germanium can conduct electricity without resistance.
The discovery, which had eluded physicists for more than 60 years, unifies the building blocks of classical electronics and quantum technologies.
Under ultraviolet irradiation, water molecules can generate highly oxidative hydroxyl radicals (Ultraviolet-water/UV-W), which can scissor polymer chains. The study results reveal that by first introducing water passages into the polymer membrane and subsequently applying the UV-W process, tunable angstrom-sized channels can be created, enabling precise ion sieving.