Articles tagged with Magnetic Fields
Physicists have developed an extremely high-precision method for magnetic field measurement, combining the accuracy of helium and cesium magnetometers. This device has an intrinsic sensitivity ideal for explaining the missing antimatter in the universe, a key area of research in fundamental physics and cosmology.
The Event Horizon Telescope detected magnetic fields near the event horizon of the Milky Way's central black hole, Sgr A*, for the first time. The findings suggest that these magnetic fields are disordered in some regions and organized in others, possibly related to jet generation.
Researchers at TUM and Los Alamos National Laboratory have discovered a way to prevent the loss of stored quantum information by applying an external magnetic field. The new nanostructures use common semiconductor materials compatible with standard manufacturing processes.
Russian scientists have predicted a decrease in solar magnetic activity, which could lead to cooler temperatures in Europe. The researchers used analysis of solar radiation and isotopes to create a model that predicts the Sun's behavior over the next thousand years.
Researchers used supercomputer simulations to understand how magnetic fields amplify in collapsing stars, enabling jets that power supernovae and gamma-ray bursts. The study found a dynamo process creates large-scale fields needed for these explosions.
A supercomputer simulation demonstrates that a collapsing massive star can generate enormous magnetic fields, focusing gas along the rotation axis to create jets producing oppositely directed blasts of highly energetic gamma rays. This breakthrough model sheds light on the process behind hypernovae and gamma-ray bursts.
Researchers at HKUST discovered a new type of superconductor, called Ising superconductors, that can withstand strong magnetic fields. These materials have potential applications in quantum computing and may lead to the creation of Majorana fermions.
Researchers found a helix-shaped whirlpool of plasma that acts as a dynamo, creating electric and magnetic fields to prevent current from peaking. The conditions for this behavior include specific pressure and current gradients.
A new technique allows for faster monitoring of magnetic field changes before solar flares, providing advance warning of potentially devastating space storms. The method, developed by Queen's University Belfast, enables scientists to examine the precursors responsible for destructive space weather.
Scientists have discovered that ultrathin layers of molybden disulfide (MoS2) remain superconducting under high magnetic fields, contrary to conventional physics. This phenomenon has significant implications for future quantum computing applications and could lead to breakthroughs in information storage.
Researchers at PPPL developed a new model explaining how magnetic islands cool in tokamaks, leading to the density limit. This finding could lead to steps to overcome the barrier and improve fusion efficiency.
Researchers found a swirling plasma dynamo that generates electric and magnetic fields to stabilize plasma, prevent 'sawtooth cycle' instabilities. The dynamo behavior occurs under specific conditions with rotating magnetic field lines and pressure gradients.
Scientists have found a method to mitigate Edge Localized Modes (ELMs) in tokamaks by using magnetic fields to produce a specific note, reducing the risk of damage to the vessel's walls. This new technique could be crucial for the success of ITER.
Researchers have developed high-temperature superconducting materials that can operate at high magnetic fields, opening a new path to fusion energy. These materials could enable the creation of compact, power-producing reactors capable of producing 500 MW of fusion power.
Physicists at PPPL found a clue to forming large-scale magnetic fields by analyzing small magnetic disturbances that combine under certain conditions. Small velocity shear creates the necessary environment for these disturbances to form one large disturbance, which can persist over billions of years.
Researchers from NUS developed a new hybrid magnetic sensor that is more sensitive to low and high magnetic fields, tunability, and temperature. The sensor has been shown to be more than 200 times more sensitive than commercially available sensors.
Researchers have developed a novel cell transplantation delivery method using magnetic fields to guide human neural progenitor cells to injured brain areas. The iron-oxide nanoparticles help retain transplanted cells at the injury site, enhancing their viability and differentiation.
Voyager 1's journey into interstellar space has been clarified by a UNH-led study, revealing that the spacecraft crossed the heliopause but is now navigating a 'muddied' magnetic field region. This discovery confirms two key findings: the center of the IBEX ribbon is the direction of the interstellar magnetic field and Voyager 1 is bey...
Researchers have optimized a novel wall-less Hall thruster design, suitable for long-duration deep space missions. The new design enables scientists to observe hidden plasma regions, facilitating investigation of plasma instability and anomalous electron transport.
Researchers have developed a new method to probe the internal magnetic fields of red giant stars using asteroseismology. This technique involves analyzing variations in light emitted from a star as due to sound waves from its interior, revealing strong internal magnetic fields in these stars.
Researchers use asteroseismology to track waves through stars and determine internal properties, finding nearly a million times stronger magnetic fields than typical refrigerator magnets. This technique allows probing of previously hidden regions of stars.
A study of edge-on spiral galaxies has revealed that halos of cosmic rays and magnetic fields are much more common than previously thought. Researchers used the VLA to detect faint radio emission, providing valuable information on star formation, winds from exploding stars, and galaxy magnetic fields.
Researchers from NIST and UC Davis have successfully created stable magnetic skyrmions under ambient conditions, opening up possibilities for novel data storage and nanoelectronic devices. The breakthrough enables the use of skyrmions in information memory systems with improved elasticity and resistance to external influences.
Researchers found that Eurasian reed warblers use a geomagnetic map to navigate during migrations. The birds can reorient themselves towards their original destination even after being exposed to a different magnetic field.
A team of scientists analyzed observations of sunspots as they formed using data from Hinode, SDO, and IRIS satellites. They modeled the observations using state-of-the-art numerical simulations performed on the Pleiades supercomputer at NASA Ames Research Center. The study reveals that the territorial struggles between magnetic bundle...
Researchers use Raman spectroscopy to measure strain at each pixel on graphene's surface, enabling quick and accurate monitoring of defects. This breakthrough could help prevent defects caused by strain in high-quality graphene production.
Researchers found an O-type star, NGC 1624-2, has the largest known magnetosphere, trapping gas and creating a massive aura of hot, dense plasma. The star's powerful stellar winds are up to 100,000 times denser than our Sun's solar wind.
Researchers found that the sample's resistance changes nonlinearly with an increasing magnetic field, suggesting a liquid-to-gas-like transition. This discovery could lead to the creation of faster and more compact electronics using Mott transition.
A PhD candidate at Queen's University has made a groundbreaking discovery of the first massive binary star with magnetic fields. The research provides new insights into the origin of magnetism in massive stars and may help explain why only 10% of these stars have strong magnetic fields.
Researchers at Princeton University have detected the long-sought chiral anomaly in a metallic compound of sodium and bismuth. The finding increases conductivity and may lead to more energy-efficient electronic devices, as impurities scatter current-carrying electrons, causing energy loss.
Researchers at Universitat Autonoma de Barcelona have successfully created a magnetic wormhole connecting two regions of space. This breakthrough technology could lead to more comfortable MRI scans and new medical applications.
Researchers at UC San Diego developed a new wireless communication technique that sends magnetic signals through the human body, offering lower power consumption and improved security compared to existing Bluetooth technology. The technique shows promising results with path losses up to 10 million times lower than Bluetooth radios.
Researchers manipulated a steel gray mineral to create holes in thin films, which showed magnetic properties at their edges. The discovery raised the metal-to-insulator phase transition temperature of the film.
Researchers from the University of New Hampshire's Space Science Center use MESSENGER spacecraft data to investigate interplanetary coronal mass ejections, improving space weather prediction capabilities. The study sheds light on the speed and deceleration of ICMEs after their launch from the sun.
Researchers at MIT propose a compact tokamak fusion reactor that could produce significant power in a decade. The new design uses commercially available superconductors to achieve higher magnetic fields, enabling more efficient fusion reactions.
A small tilt of magnets makes them viable memory chips, opening the door to a memory system that can be packed onto a microprocessor. This breakthrough could lead to computers that turn on instantly and operate with greater speed and significantly less power.
A team of astronomers led by Gregg Hallinan has discovered that brown dwarfs, which are cool and dim objects, host powerful auroras near their magnetic poles. The findings suggest that these so-called failed stars behave more like giant planets with highly active magnetic fields.
Researchers at Toyohashi University of Technology have developed a practical magnetic metallic contaminant detector using three high-Tc RF superconducting quantum interference devices for food inspection. The detection technique is based on recording the remnant magnetic field of a contaminant, providing a safe and high-resolution method.
Researchers predict a new Little Ice Age may begin by 2030, with reduced solar activity leading to significant cooling of the Earth's atmosphere. This decrease in solar irradiance could result in severe winters and cold summers, similar to those experienced during the Maunder minimum in the 17th century.
A study reveals that a massive star's collapse may power ultra-long gamma-ray bursts with the help of magnetars, rewriting our understanding of these cosmic events. Researchers observed a rare case where a supernova was linked to an ultra-long GRB, finding evidence of a magnetar at the source.
Researchers developed a new technique using synchrotron light to map complex 3D magnetization in wound magnetic layers. This allows for improved sensitivity of magnetic field detectors, crucial for medical imaging and magnetoencephalography.
Scientists at Jülich have developed a new concept for compact terahertz sources with tunable wavelengths using short-pulse lasers and strong external magnetic fields. This technology has the potential to revolutionize various applications, including non-invasive cancer screening and ultrafast wireless connections.
Scientists have discovered a new material that exhibits extremely large magnetoresistance due to its superfast electrons. The material, niobium phosphide, has the potential to revolutionize the design of electronic components, enabling faster processing and storage of data.
The study reveals a helically-twisted loop of magnetic field coiled around the galaxy's main spiral arm, affecting gas flow and star production. The discovery helps explain how galactic spiral arms are formed, resolving major questions about galaxy evolution.
The STAR collaboration has observed a 'chiral magnetic wave' rippling through the quark-gluon plasma created at RHIC's energetic particle smashups. This finding provides evidence for the chiral magnetic effect, a quantum phenomenon causing electric charge separation along the axis of a magnetic field.
Researchers at Stanford University have created a computer that uses water droplets to process information, demonstrating universal logic gates and feedback. The system consists of tiny iron bars on glass slides that manipulate magnetic nanoparticles in water droplets, enabling precise control over physical matter.
Researchers at Brown University propose that comet collisions may have formed lunar swirls through the scouring of loose soil. Computer simulations suggest that impacts from cometary comas can produce bright streaks on the moon's surface.
Physicists at Princeton Plasma Physics Laboratory have simulated the formation of plasmoids in hot plasma gas that fuels fusion reactions. The discovery could lead to more efficient creation and maintenance of plasma through transient Coaxial Helicity Injection, simplifying tokamak design.
Researchers at Ohio State University have confirmed and interpreted experimental findings using OSC services, showing that phonons have magnetic properties. A magnetic field reduced the amount of heat flowing through a semiconductor by 12 percent in simulations performed on the Oakley Cluster.
Researchers at Temple University and the University of Maryland have discovered a new class of non-Joulian magnets that expand their volume when placed in a magnetic field. These magnets can generate negligible amounts of wasteful heat during energy harvesting, making them ideal for creating compact omnidirectional actuators.
Researchers at Technical University of Munich develop record-breaking magnetic shielding to dampen low frequency magnetic fields, creating the weakest magnetic field in the solar system. This breakthrough enables high-precision experiments, such as measuring the electric dipole moment of neutrons.
Researchers have designed and tested a magnetic shield that provides more than 10 times better shielding than previous state-of-the-art shields. The device enables high precision measurements of fundamental particles, potentially revealing previously hidden physics.
A researcher at the University of Waterloo has theoretically demonstrated detecting a single nuclear spin at room temperature, enabling enhanced Nuclear Magnetic Resonance (NMR) imaging of biological materials. A tiny ferromagnetic particle acts as an amplifier to detect a single spin at a distance of 30 nanometres.
Physicists detect nuclear spins in single biomolecules for the first time using magnetic particles and novel experimental setup. This breakthrough improves medical diagnostics and analysis of biological and chemical samples.
Scientists have discovered that Mercury's magnetic field is almost 4 billion years old, providing a new understanding of the planet's history. The discovery was made possible by data from NASA's MESSENGER spacecraft, which orbited Mercury between 2011 and 2015.
Scientists at NJIT's Big Bear Solar Observatory have captured groundbreaking images of the Sun's interior structure, revealing complex dynamics of sunspots' dark cores. The high-resolution images show finely structured plasma flows and oscillating cool jets piercing the hot atmosphere.
Scientists capture first high-res images of flaring magnetic structures known as solar flux ropes, providing insights into massive eruptions on the Sun's surface. The images were taken with NJIT's newly commissioned 1.6m New Solar Telescope at Big Bear Observatory.
The Magnetospheric Multiscale (MMS) mission successfully launched a unique formation of four identical spacecraft to study magnetic reconnection, driving space weather events that disrupt Earth's orbit. The Goddard-developed Navigator GPS receiver enabled precise navigation and tracking in weak signal areas.
Astronomers have detected an extremely powerful magnetic field close to a supermassive black hole in a distant galaxy, revolutionizing our understanding of these cosmic phenomena. The discovery was made using the Alma telescope and reveals new insights into the structure and formation of black holes.
Astronomers have detected strong magnetic fields near the event horizon of a supermassive black hole using ALMA. The findings provide new insights into the mysterious mechanisms driving jet formation, with magnetic fields playing a crucial role in matter escape.