Articles tagged with Magnetic Fields
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The MMS mission has detected the source of magnetic reconnection, a process converting stored magnetic energy into kinetic energy and heat. The spacecraft measured plasmas and observed evidence of reconnection, including accelerated electrons and a strong electrical current.
Researchers discovered unique starspots on nearby star Zeta Andromedae, differing significantly from the Sun's spots. The findings offer a rare glimpse into the Sun's infancy and challenge current theories about star magnetic fields.
Astrophysicists have observed a distant star in Andromeda with a different positioning of sunspots, indicating a magnetic field driven by unique internal dynamics. The star's rapid rotation creates a powerful magnetic field, resulting in asymmetrical distribution of sunspots on its surface.
Scientists have developed a new method to image magnetic fields on the nanometer scale at temperatures close to absolute zero. They used quantum sensors in diamond-based microscopes to achieve unrivalled precision in measuring magnetic fields in superconductors.
A Princeton graduate student has developed a program that helps stabilize fusion plasmas, reducing instabilities that decrease tokamak efficiency. The new method uses feedback from sensors for real-time control of plasma rotation and fuels fusion reactions.
Researchers found that applying a magnetic field to PdCoO2, a non-magnetic metal, increases its electrical conductivity and reduces resistance. The phenomenon was linked to the material's layered crystal structure and topological characteristics.
Researchers create thin films of a copper-oxide compound to study its electronic behavior at near absolute zero. They find that decreasing doping levels or increasing magnetic fields suppresses superconductivity, while Hall resistivity measurements reveal quantum fluctuations and electronic memory.
The team discovered a new plasma wave phenomenon leading to the development of a negative ion source for fusion plasma heating. The newly developed plasma source utilizes a helicon wave to produce high-temperature electrons, which are then neutralized and injected into the magnetically-confined plasma core.
Researchers at Saarland University are developing intelligent roller conveyor systems that can adapt to changing conditions and detect faults, improving production efficiency. The system uses advanced sensor technology to analyze motor data and adjust its performance in real-time.
A new study at Rockefeller University uses magnetic forces to control neurons in mice, finding the brain plays a vital role in glucose metabolism. By targeting specific cells, researchers can activate or inhibit neural activity, offering potential therapeutic applications for metabolic and neurologic diseases.
Researchers have developed a new framework to understand the evolution of sun-like stars, which can help determine their age with more precision. The model predicts that younger stars will vary significantly in x-ray emission intensity, but convergence occurs after a certain age, making them more predictable.
Researchers have created tiny particles that can be precisely controlled by magnetic fields and generate electric fields, revolutionizing medicine and regenerative therapy. These 'Janus' particles can target cancer cells with precision and efficiency, eliminating side effects.
The study proposes a technique to increase the number of electrons trapped in the wake of the laser pulse, improving beam quality. This could lead to better technology for future accelerators and bring high energy physics experiments to more labs and universities.
Andrea Young's grant will support the development of nano-SQUID-on-tip, a device that measures thermal, magnetic, and topographic properties of materials. This tool enables correlation of physical and magnetic structure on relevant length scales, crucial for nanoscale device performance.
Researchers at UVA University have successfully used a synthetic gene to manipulate the behavior of mice and zebrafish by applying magnetic fields. The breakthrough could lead to new treatments for neurological diseases such as schizophrenia and Parkinson's disease.
A new study uses IBEX data to determine the strength and direction of the interstellar magnetic field beyond the solar system, providing insight into the galaxy's magnetic forces. The findings are based on simulations that correctly predict the locations of neutral ribbon particles and agree with Voyager 1 measurements.
Researchers successfully experimented with chiral magnetic materials that show a unique magnetic twisting effect triggered by weak external magnetic fields. This leads to the development of new types of magnetic memories with unprecedented storage capacities, up to 10 million times larger than conventional magnetic storage memory devices.
Scientists have discovered a way to generate very low-resistance electric current in zirconium pentatelluride, a semi-metallic material. The discovery relies on the separation of right- and left-handed particles, creating a powerful electric current.
Researchers have discovered Landau levels on atomically flat surfaces without asymmetries, supporting the domain model for non-magnetic field generation. The study reveals unique properties of graphite-based carbon materials, such as graphene, for electronic devices and catalysis.
Researchers at HZDR have developed a method for controlling the propagation of spin waves in a targeted and simple way, creating a basis for nanocircuits that use spin waves. This approach uses magnetic domain walls and small external magnetic fields to manipulate the course of spin waves, enabling efficient information processing.
Scientists use real-time observations and computer simulations to analyze the solar corona's dynamic system. The sun's magnetic field drives space weather on Earth and affects interplanetary radiation. Understanding its structure is crucial for studying space throughout the solar system.
The PPPL team will investigate the formation and growth of magnetic fields using the Titan Cray XK7 supercomputer, with the goal of understanding processes like Weibel instabilities and explosive magnetic reconnection. The research will also inform experiments at the National Ignition Facility.
Researchers have successfully created and observed knotted solitary waves, or knot solitons, in a quantum field. The discovery opens up new avenues of study for understanding the properties of quantum mechanics and its potential applications in fields such as cosmology and quantum computers.
Researchers have developed an entirely new form of digital memory using antiferromagnets, which can be controlled with electrical pulses. This technology has the potential to increase storage density, reduce energy consumption and improve speed.
Microbots are controlled using individual magnetic fields from an array of tiny planar coils, allowing for independent movement and cooperative manipulation tasks. This technology aims to enhance manufacturing and biomedical research applications.
The PPPL-designed scraper element will help physicists explore various magnetic field arrangements and plasma currents in the W7-X stellarator. The component intercepts heat from fusion reactions, reducing the risk of damage to the divertor and stellarator equipment.
Researchers at PPPL developed computer simulations capturing the evolution of an electric current inside fusion plasma without using a central electromagnet. The new method achieves high plasma currents by injecting radio-frequency waves and neutral beams into the plasma, showing promise for spherical tokamaks.
An international team of astronomers found strong magnetic fields are common in stars, contradicting previous assumptions. The study used data from NASA's Kepler mission to analyze over 700 red giant stars and discovered that many host internal magnetic fields up to 10 million times stronger than Earth's.
New research indicates that stars older than the Sun spin less than expected, affecting age calculations. This discovery has significant implications for understanding stellar aging and predicting future changes in our own Solar System.
A team of astronomers has discovered that up to 60 percent of stars host strong magnetic fields, which can significantly alter the physical processes taking place in the core. The researchers used asteroseismology to detect these hidden fields and found that they are prevalent in intermediate mass stars.
Aging stars stop slowing down as their magnetic field interacts with a wind of particles flowing away from its surface, according to research published in Nature. This discovery challenges previous theories on stellar rotation and has implications for understanding how the Sun influences its local environment, including planets.
Researchers have discovered 'forbidden' compounds in super-Earths that could increase heat transfer rates and strengthen magnetic fields. These compounds, formed by silicon, oxygen, and magnesium at high pressures, have different properties than normal compounds, making them important for generating powerful magnetic fields.
Researchers at Princeton Plasma Physics Laboratory have discovered a mechanism that can halt solar eruptions before they reach the Earth. This finding could improve the timing of future space missions and provide crucial insights for protecting satellites and power grids from geomagnetic storms.
Scientists discovered twisted magnetic fields in dusty disks orbiting young stars, affecting disk growth. The study used the VLA radio telescope to observe a 750-light-year-old protostar in Perseus, finding millimeter- to centimeter-sized particles in the disk.
A team of researchers from North Carolina State University has developed a technique for remotely controlling soft robots by manipulating elastic polymers with magnetic nanoparticles. By arranging the nanoparticles into parallel chains, they can control the movement and direction of the soft robots.
Researchers at Berkeley Lab and UC Berkeley demonstrate record-breaking NMR/MRI signal sensitivity through hyperpolarization of carbon-13 nuclei in diamond. The technique enables orders of magnitude sensitivity enhancement for NMR studies under ambient conditions.
A study by Tohoku University researchers has clarified how external driving forces, such as magnetic fields and electric currents, affect magnetic structures. The findings suggest that the actions of these forces on the structure are fundamentally different.
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 found that water ions escape from Saturn's magnetosphere at a reconnection point, where magnetic fields disconnect and reconnect. This discovery helps scientists understand the physics of rapid rotators like Jupiter and how they expel materials.
Researchers have discovered high levels of polarization in radio emissions from Sagittarius A*, providing proof that strong horizon-scale magnetic fields exist. This finding has significant implications for our understanding of black hole growth and the nature of gravity.
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.
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 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.
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.
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 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.
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.