Sentences with phrase «magnetic field structure»

The direction of polarized waves emitted from a celestial object is related to the magnetic field structure of the object.

This helps researchers understand the magnetic field structure in the heart of a quasar.

Although there is no axial physical boundary downstream of the source, the wave recognizes the bent magnetic field structure as the boundary and is reflected there (black arrow in Fig).

The researchers found that the radiofrequency wave for the plasma production, called a helicon wave, is reflected by a local change of the refractive index (contour plot in Fig), which is introduced by the rapidly bent magnetic field structure (white arrows in Fig).

Using several years» worth of observations, they were able to build up a more complete picture of the magnetic field structure that supports the plasma, in structures known as prominences.

Similarly, sudden bursts of plasma and magnetic field structures (coronal mass ejections, or CMEs) from the sun's atmosphere and high - speed solar wind could significantly disable large portions of the electric power grid.

Not exact matches

By 3 - D printing a deformable material containing iron particles in a lattice structure, their metamaterials can be compressed using a magnetic field.

Because the magnetic field influences the structure of rocks (and clay pots) during their formation, knowing the field's history allows you to tie specific objects to specific ranges of dates.

Scientists use models of Earth's structure and measurements of Earth's magnetic field taken at USGS observatories (https://geomag.usgs.gov/monitoring/observatories/) to determine which sections of the electrical grid might lose power during a geomagnetic storm.

Juno is mapping Jupiter's gravitational and magnetic fields to better understand the planet's interior structure and measure the mass of the core.

The micro-robot, which is remotely controlled by magnetic fields, can move one hydrogel at a time to build structures.

But then the evolution took a surprising turn: in all the simulations, no matter what the magnetic field looked like when the neutron star was born, the field took on a particular structure and its evolution dramatically slowed.

«This result is also significant because it shows that the Hall effect, a phenomenon first discovered in terrestrial materials and which is thought to help weaken a magnetic field through turbulence, can actually lead to an attractor state with a stable magnetic - field structure,» Gourgouliatos says.

These wispy coronal structures arise from the magnetic field on the sun's visible surface, or its photosphere.

Zhou's technique uses metal and carbon - based frameworks that change their structure in response to slight changes in temperature, magnetic fields, and light.

His team is currently testing the sensitivity of the new design to changes in magnetic fields, and hoping that this structure could be used for biosensing applications such as MEG.

A: I'm working on using solid - state defects in diamonds as magnetic field sensors, with the goal of using them as little nanoscale MRI machines that can study the structure and dynamics of single biological molecules (e.g., proteins).

Since Juno started orbiting Jupiter last July, it's revealed many new, sometimes surprising insights into the planet's structure, atmosphere, and magnetic field.

Functional materials are those with controlled composition, size, and structure to facilitate desired interactions with light, electrical or magnetic fields, or chemical environment to provide unique functionality in a wide range of applications from energy to medicine.

In the course of their research into the use of magnetic domain walls (local regions of magnetic «charge» usually driven by magnetic fields) to increase our capacity for information storage and logical processing, physicists at the University of Nottingham have discovered a phenomenon which has allowed them to «manipulate» the structure of a magnetic domain wall.

Bismuth selenide has a layered crystalline structure, and the magnetic field the researchers used was directed parallel to the plane of these layers.

The common assumption has been that magnetic fields are thin tube - like structures at the bottom of the Sun's convection zone in the thin tachocline at a depth of 200,000 kilometres, from where they erupt to the surface and form sunspots.

In the last few years, several experimental groups have shown that individual particles in fluid — when coaxed to spin by magnetic or electric fields — can form interesting collective structures.

However, when bismuth ferrite is placed in a strong magnetic field (greater than a certain critical value), the structure is destroyed and this is accompanied by the emergence of a linear ME effect (when polarization is linearly proportional to the applied field).

Typically, when solar structures with opposite magnetic orientations collide, they explosively release magnetic energy, heating the atmosphere with a flare and erupting into space as a coronal mass ejection — a massive cloud of solar material and magnetic fields.

He had a hunch those swirls were part of a bigger structure, and a computer simulation proved him right: In aggregate, the swirls could twist the sun's magnetic field, causing it to launch a huge spinning funnel of gas.

The corona is a large, tenuous layer of gas whose structure is governed by the Sun's magnetic field.

When the scientists switched on a specially designed magnetic field, the spins arranged into a twisting structure of loops, knotting up into a configuration known as a Shankar skyrmion.

Using functional magnetic resonance imaging — a technique that monitors brain activity in real time — the Johns Hopkins group found reversing a decision requires ultrafast communication between two specific zones within the prefrontal cortex and another nearby structure called the frontal eye field, an area involved in controlling eye movements and visual awareness.

The flows also substantially influence the structure and evolution of the sun's magnetic field, the researchers suspect.

A better understanding of the structure of Earth's inner core would clarify its role in locking the planet's magnetic field in its north - south position, which has the effect of insulating terrestrial life from a lethal bombardment of cosmic rays.

Those threads indicate the presence of a magnetic field — 1/10, 000 the strength of Earth's, but huge — that holds the structure together.

It also has to use very strong microwaves and magnetic fields to reach the sample, but these processes are invasive and can affect delicate bio-samples, just like the microwave in your kitchen, particularly when trying to see the molecular structure of liquids.»

The magnetic structures are built during the cooling of molten rock and reflect the earth's magnetic field at the time of their formation.

As the structures are so tiny — each grain is only about the size of a virus — there is only one method with which the nanovortices can directly be observed while they are heated up and cooled down: «A special high - resolution electron microscope at the Ernst Ruska - Centre (ER - C) in Jülich is capable of making magnetic fields on the nanoscale holographically visible,» explains Almeida.

The dramatic findings complement NASA's Juno mission this summer which aims to understand the relationship between the two biggest structures in the solar system — the region of space controlled by Jupiter's magnetic field (i.e. its magnetosphere) and that controlled by the solar wind.

For the crushing tests, the can is mounted vertically under Shiva Star's central column, which is stabilized with four tons of weights to prevent magnetic fields from pulling the structure apart.

But in particular, researchers in the Cava lab noticed that five materials with extreme magnetoresistance yet very different structures and chemical make - up all share the same characteristics when their resistance - temperature - applied - magnetic - field diagrams are measured.

It will be in a position to explore key questions regarding solar magnetic field generation and dissipation, solar variability, atmospheric structure and dynamics.

With the help of EDMR, electrically detected magnetic resonance, an ultrasensitive method of measurement, they were able to determine the local defects» structure by detecting their magnetic fingerprint in the photo current of the solar cell under a magnetic field and microwave radiation.

Gow's method of investigating how the human brain perceives and distinguishes among elements of spoken language combines electroencephalography (EEG), which records electrical brain activity; magnetoencephalograohy (MEG), which the measures subtle magnetic fields produced by brain activity, and magnetic resonance imaging (MRI), which reveals brain structure.

Using one of them, a manganese - doped indium arsenide, Ohno built a layered structure that became magnetic if a positive electrical charge was applied to it with a field - effect transistor.

«Seeing these small structures for the first time gives us the promise of studying the underlying physical mechanisms associated with magnetic fields on the sun,» says Scharmer.

For increasing magnetic field, these structures gradually evolve into the Landau levels of the quantum Hall effect.

To achieve this, Omura was joined by an international team led by Amos Smith of the University of Pennsylvania, an expert in magnetic resonance spectroscopy, which can determine a molecule's structure by analysing the behaviour of its constituent atoms in a powerful magnetic field.

This enabled them to map the strength and structure of the intervening galaxy's magnetic field.

Professor Rim proposed a meaningful solution to these problems through DCRS, an optimally designed coil structure that has two magnetic dipole coils, a primary one to induce a magnetic field and a secondary to receive electric power.

Rooted in the Solar Magnetic Field, the structure of the corona is visible extending a million miles above the Sun's surface in this composite image from the EIT and UVCS instruments onboard the SOHO spacecraft.

As this SWRI press release details, Juno has eight scientific instruments designed to study the planet's magnetic field, atmosphere and interior structure, and they show that Jupiter is far more than just a giant ball of gases.

The award cites him for designing and operating an array of instruments and using them to uncover the structure and magnetic fields of the sun.