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Imperfections reveal unexpected links between light and atomic vibrations in ultrathin boron nitrideFirst, one person stands up, followed by their neighbors, one after another, until a wave sweeps through the stadium. Atoms within a material move in a similar way: rather than remaining completely still in their positions, they vibrate together around their respective positions. In physics, these collective lattice vibrations are known as “phonons.” Some of them can interact with light and change its energy in the process.
Researchers using the Steady High Magnetic Field Facility have found that zinc doping unexpectedly alters the superconducting properties of iron selenide (FeSe) while preserving its two-gap superconducting state.
Way out past the asteroid belt, another belt encircles the planets in our solar system. The Kuiper belt, beyond Neptune, preserves icy bodies that escaped much of the processing experienced by objects closer to the sun. Unlike the rocky and metallic asteroid belt, Kuiper belt objects are composed mostly of frozen water, methane and ammonia, mixed with rock and dust.
Scientists at the Curtin University node at the International Center for Radio Astronomy Research (ICRAR) have linked mysterious radio pulses to an unusual pairing of stars—a dead star that spins every eight minutes and a star similar to our own sun.
In materials science labs around the world, researchers regularly reproduce a peculiar experiment. Under a microscope, they use tiny robotic manipulators to lay two sheets of carbon, each a single atom thick, against one another. They then rotate the top sheet against the bottom. The two identical lattices of atoms, when twisted relative to one another, bloom into a complex moiré pattern, a shifting complex of honeycomb shapes that grow and shrink as the angle between the layers changes.
Body camera video shows the suspect striking a King County deputy with a knife; the suspect was released less than 24 hours after his arrest, then failed to appear for arraignment
The universe is filled with light at many different energies. Some of it is invisible to our eyes, including extremely energetic gamma rays, which can only be produced in the most extreme environments in our universe, for example supermassive black holes, exploding stars or astrophysical jets. To “see” gamma rays, astrophysicists use particle experiments in space, such as the Fermi-Large Area Telescope (Fermi-LAT). This instrument was launched into space by NASA in 2008, and it can detect photons from 20 megaelectronvolts (MeV, a unit of energy) to beyond 1 teraelectronvolt (TeV).
Sometimes massive stars can mimic the behavior of a black hole and trick astronomers into misinterpreting their nature. Such is the case with a strange pair of stars in the Large Magellanic Cloud (LMC) cluster NGC 1850. The system was initially thought to contain a star about five times the mass of the sun orbiting a stellar-mass black hole. Now, a new study led by Rhys Seeburger of Liverpool John Moores University demonstrates that this is a black hole “impostor” system. The research paper was posted to the arXiv preprint server on Oct. 27.
Mars has two small moons, Phobos and Deimos, but their origins remain uncertain. Were they asteroids captured by Mars’ gravity, or did they form from debris following a giant impact on the planet?
Hundreds of first responders used power saws, rescue K-9s and heavy equipment to search for survivors; three firefighters were among 17 people injured
CHP said officers used patrol vehicles to block the Waymo, which ultimately complied and remained behind the traffic break
The department’s closure ends 65 years of service, leaving trustees to determine how to cover nearly 6,000 calls for service annually
The Euclid Consortium and the European Space Agency (ESA) have released the first major batch of data from the Euclid space telescope. This release, which captures light from more than a billion objects and covers an area of sky equivalent to 9,500 full moons, lays the foundation for Europe’s dark universe detective’s largest-ever 3D map of the cosmos. Several German research facilities play crucial roles in the Euclid mission’s success.
Researchers from the Hefei Institutes of Physical Science (HFIPS) of the Chinese Academy of Sciences (CAS) have developed a unified framework for establishing symmetry criteria and classifying unconventional magnets.
A New Mexico State Police officer on patrol with two “COPS” crew members detained Izaeah Washington, who was holding a stolen gun and died at a hospital after the shooting
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