Magnetic Field Current Events

Magnetic Field Current Events, Magnetic Field News Articles.
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Observing the onset of a magnetic substorm
Magnetic substorms, the disruptions in geomagnetic activity that cause brightening of aurora, may sometimes be driven by a different process than generally thought, a new study in the Journal of Geophysical Research: Space Physics shows. (2014-09-02)

Not everything is ferromagnetic in high magnetic fields
High magnetic fields have a potential to modify the microscopic arrangement of magnetic moments because they overcome interactions existing in zero field. Usually, high fields exceeding a certain critical value force the moments to align in the same direction as the field leading to ferromagnetic arrangement. However, a recent study showed that this is not always the case. The experiments took place at the high-field magnet at HZB's neutron source BER II. (2020-02-10)

New insights into how magnetic lines around Earth reconnect
High-resolution measurements from NASA spacecraft have unraveled the mysteries of magnetic reconnection around Earth -- a phenomenon whereby magnetic field lines break and reconnect, releasing energy and accelerating particles. (2016-05-12)

Earth's magnetic field really did reverse itself
NWO researchers have developed an improved method of identifying the magnetic signals in old geological strata. The researchers used the new method to show that the earth's magnetic field really did reverse itself ten million years ago. (2001-11-26)

Magnetic sensor that brooks no interference
A novel magnetic sensor for the first time detects tiny fluctuations in a small magnetic field -- even when there is a strong magnet right beside it. The sensor can thus be utilized even in places where power cables generate an interference field -- for instance in a car's side mirror. (2008-06-03)

News about the light-dependent magnetic compass of birds
Birds have a light-dependent compass in their eyes. A research group at Goethe University Frankfurt, together with French colleagues, has elucidated how this compass works at the molecular level. (2016-06-06)

The magnetic compass of birds is affected by polarized light -- PNAS study
The magnetic compass that birds use for orientation is affected by polarized light. This previously unknown phenomenon was discovered by researchers at Lund University in Sweden. (2016-01-26)

The solar wind breaks through the Earth's magnetic field
Space is not empty. A wind of charged particles blows outwards from the Sun, carrying a magnetic field with it. Sometimes this solar wind can break through the Earth's magnetic field. Researchers at the Swedish Institute of Space Physics in Uppsala now have an answer to one of the questions about how this actually occurs. (2014-06-11)

New method makes magnetic maps of the solar corona
The twisting, ever-shifting and metrically elusive magnetic field of the Sun's ephemeral outer atmosphere can be mapped using near-infrared observations of the solar corona. (2020-08-06)

Stellar discovery by Queen's researcher
Ph.D. candidate Matt Shultz has discovered the first massive binary star, epsilon Lupi, in which both stars have magnetic fields. A binary star is a star system consisting of two or more stars, orbiting around their common center of mass. (2015-09-11)

Sounding rocket CLASP2 elucidates solar magnetic field
Cooperative operations between a solar observation satellite and a sounding-rocket telescope have measured the magnetic field strength in the photosphere and chromosphere above an active solar plage region. This is the first time that the magnetic field in the chromosphere has been charted all the way up to its top. This finding brings us closer to understanding how energy is transferred between layers of the Sun. (2021-02-19)

Head movements by warblers could reveal basis for birds' geomagnetic sense
Researchers have uncovered a major clue to a tantalizing and long-standing mystery: how migratory songbirds sense geomagnetic fields and use this information to orient their flight. The new findings document a specific (2004-11-08)

UIC researchers describe fundamental processes behind movement of magnetic particles
Researchers from the University of Illinois Chicago describe several fundamental processes associated with the motion of magnetic particles through fluids as they are pulled by a magnetic field. (2020-11-18)

Chickens also orient themselves by the Earth's magnetic field
Until recently, people believed that the ability to orient themselves by the Earth's magnetic field was restricted to migratory birds. Now ornithologists at Frankfurt University have discovered that domestic chickens also have a built-in compass. It is clear that a magnetic sense of direction developed at an early stage of evolution. The Earth's magnetic field was presumably used by the ancestors of today's birds as an aid to finding their way about their environment. (2007-07-05)

Quantum-mechanical monopoles discovered
Researchers at Aalto University and Amherst College have observed a point-like monopole in a quantum field itself for the first time. This discovery connects to important characteristics of the elusive monopole magnet. The researchers performed an experiment in which they manipulated a gas of rubidium atoms prepared in a nonmagnetic state near absolute zero temperature. Under these extreme conditions they were able to create a monopole in the quantum-mechanical field that describes the gas. (2015-04-30)

Delft research increases understanding of Earth's magnetic field
Research recently conducted at Delft University of Technology marks an important step forward in understanding the origins of the Earth's magnetic field. The research findings are published this week in the scientific journal Physical Review Letters. (2007-03-09)

New argument presented to highlight the axion nature of dark matter
According to the hypothesis, axionic dark matter, provoking structural rearrangement in compact stars with a strong magnetic field, can protect them from a catastrophic loss of magnetic energy, but at the same time allows such objects to rotate abnormally fast. (2020-02-03)

Physicists studied the influence of magnetic field on thin film structures
A team of scientists from Immanuel Kant Baltic Federal University together with their colleagues from Russia, Japan, and Australia studied the influence of inhomogeneity of magnetic field applied during the fabrication process of thin-film structures made from nickel-iron and iridium-manganese alloys, on their properties. These systems can be used in various types of magnetic field sensors. The article of the team was published in the Journal of Magnetism and Magnetic Materials. (2018-12-17)

'Lost' sediments show details of polar magnetic field
UC Davis researchers studying cores of sediment collected 40 years ago have found evidence for magnetic field vortices in the Earth's core beneath the South Pole. The results contrast with earlier studies at lower latitudes, and could lead to a better understanding of processes in the core. (2008-02-27)

Magnetic stars
The puzzle of 'magnetic stars' solved by astrophysicists of the Max Planck Society. (2004-10-15)

Smart multi-layered magnetic material acts as an electric switch
The nanometric-size islands of magnetic metal sporadically spread between vacuum gaps display unique conductive properties under a magnetic field. In a recent study published in EPJ Plus, Anatoliy Chornous from Sumy State University in Ukraine and colleagues found that the vacuum gaps impede the direct magnetic alignment between the adjacent islands -- which depends on the external magnetic field -- while allowing electron tunneling between them. (2017-02-27)

Scoping magnetic fields out for prevention
Concerns about the effects of magnetic fields on human health require us to limit our exposure to them. In a new study in EPJ Plus, physicists Jose Manuel Ferreira and Joaquim Anacleto from the TrĂ¡s-os-Montes e Alto Douro University, Portugal, develop a method for evaluating the circulation of magnetic fields in closed loops. This can help to limit exposure in electric and hybrid vehicle architectures, and in domestic and work environments. (2018-07-11)

Spintronics by 'straintronics'
Data storage in magnetic media is very energy consuming. Novel materials could reduce the energy needed to control magnetic memories thus contributing to a smaller carbon footprint of the IT sector. Now an international team led by HZB has observed at the HZB lightsource BESSY II a new phenomenon in iron nanograins: whereas normally the magnetic moments of the iron grains are disordered at room temperature, this can be changed by applying an electric field. (2019-02-14)

Researchers propose technique for measuring weak or nonexistent magnetic fields
Researchers at the University of Iowa have proposed a new approach to sampling materials with weak or no magnetic fields. The method could help advance research in a host of fields, from computing to MRI machines. The results were published in the journal Physical Review Letters. (2017-03-08)

Nuclear magnetic moments
SCIENCE CHINA: Physics, Mechanics & Astronomy will publish a special issue on nuclear magnetic moments and related topics in February 2011. (2010-12-23)

How birds can detect the Earth's magnetic field
Researchers at Lund University in Sweden have made a key discovery about the internal magnetic compass of birds. Biologists have identified a single protein without which birds probably would not be able to orient themselves using the Earth's magnetic field. (2018-04-06)

Scientists reveal Milky Way's magnetic attraction
An international research project involving the University of Adelaide has revealed that the magnetic field in the center of the Milky Way is at least 10 times stronger than the rest of the galaxy. (2010-01-06)

Magnetic nanoparticles assembled into long chains
Chains of 1 million magnetic nanoparticles have been assembled and disassembled in a solution of suspended particles in a controlled way, scientists at the National Institute of Standards and Technology (NIST) report. Such particles and structures, once their properties are more fully understood and can be manipulated reliably, may be useful in applications such as medical imaging and information storage. (2005-10-20)

HINODE captures record breaking solar magnetic field
Astronomers at the National Astronomical Observatory of Japan (NAOJ) using the HINODE spacecraft observed the strongest magnetic field ever directly measured on the surface of the Sun. Analyzing data for 5 days around the appearance of this record breaking magnetic field, the astronomers determined that it was generated as a result of gas outflow from one sunspot pushing against another sunspot. (2018-02-06)

Future information technologies: Magnetic monopoles
An international collaboration at BESSY II has discovered a new method to inscribe exotic magnetic patterns such as magnetic monopoles into thin ferromagnetic films. Such unconventional orientation of magnetic domains might open a new path for the design of energy efficient data storage. (2016-10-11)

NASA keeps watch over space explosions
NASA's Magnetospheric Multiscale mission has been observing a type of space explosion called magnetic reconnection for three years. MMS just witnessed such an explosion in a unique location: the part of Earth's magnetic environment trailing behind the planet, away from the Sun -- with enough resolution to reveal its true nature more clearly. (2018-11-15)

Relativity matters: Two opposing views of the magnetic force reconciled
Our understanding of how a point-particle carrying a charge moves in presence of an inhomogenous magnetic field relied until now on two theories that were believed to differ. In a new study just published in EPJ C, the authors Johann Rafelski and colleagues from the University of Arizona, USA, succeeded in resolving this ambiguity. Their solution makes it possible to characterise the interaction of particles whose speed is close to the speed of light in the presence of inhomogeneous electromagnetic fields. (2018-01-29)

Novel materials: Smart and magnetic
Smart materials alloys very often display glass-like magnetism. Other smart materials with similar properties include those which, when exposed to a magnetic field, change their electrical resistance, known as manganites, or change their temperature, known as magnetocaloric materials. Kaustav Mukherjee and his colleagues from the Consortium for Scientific Research Indore in India studied a key stage in the formation of such a magnetic glass material in a paper about to be published in EPJ B. (2013-01-28)

Neutrons scan magnetic fields inside samples
With a newly developed neutron tomography technique, an HZB team has been able to map for the first time magnetic field lines inside materials at the BER II research reactor. Tensorial neutron tomography promises new insights into superconductors, battery electrodes, and other energy-related materials. (2018-10-04)

The South Atlantic Anomaly is probably not an evidence of a reversing Earth's magnetic field
Based on a reconstruction of the Earth's magnetic field of the past, scientists from the Helmholtz Centre Potsdam -- GFZ German Research Centre for Geosciences and the universities of Iceland, Liverpool, and Nantes now show that the anomaly is probably not a precursor of a switching of the poles. (2018-04-30)

Scientists 'record' magnetic breakthrough
An international team of scientists led by the University of York has demonstrated a revolutionary new way of magnetic recording which will allow information to be processed hundreds of times faster than by current hard drive technology. (2012-02-07)

A glimpse of the magnetic field around a black hole
A sudden flare and cooling of gas around a black hole in a binary system has offered astronomers a rare opportunity to measure the system's magnetic field, finding it weaker than expected. (2017-12-07)

Magma ocean may be responsible for the moon's early magnetic field
Around four billion years ago, the moon had a magnetic field that was about as strong as Earth's magnetic field is today. How the moon, with a much smaller core than Earth's, could have had such a strong magnetic field has been an unsolved problem in the history of the moon's evolution. A new model proposes that a magma ocean may be responsible. (2018-04-24)

Magnetic nature of complex vortex-like structures in a Kagome crystal Fe3Sn2
Three-dimensional magnetic bubbles were demonstrated from the view of integral magnetizations for the first time, which clarify the physics behind complex multi-ring and arc-shaped vortices obtained from two-dimensional transmission electron microscopy magnetic imaging. (2020-10-28)

Surprisingly rapid changes in the Earth's core discovered
In a recent paper published in Nature Geoscience, the geophysicist Mioara Mandea from the GFZ German Research Center for Geosciences, Potsdam and her Danish colleague Nils Olsen from the National Space Institute/DTU Copenhagen, have shown that motions in the fluid in the Earth's core are changing surprisingly fast, and that this, in turn, effects the magnetic field of our planet. (2008-07-07)

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