How energy is transferred from electromagnetic fields to the stream of particles

Mail Online | 2/14/2019 | Victoria Bell For Mailonline
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Direct measurements of how energy is transferred from chaotic electromagnetic fields in space to the solar wind have been taken for the first time, experts say.

It was thought that a process called Landau damping was responsible for energising electrons in the solar wind and heating up interplanetary space.

Data - NASA - Satellite - Process - Action

Data taken from a NASA satellite has now measured the process in action and confirmed the theory, researchers say.

Scientists from Queen Mary University of London (QMUL) say the finding gives us a greater understanding about the heating of solar winds as they travel through space.

Wind - Stream - Particles - Plasma - Sun

Solar wind is the stream of charged particles, or plasma, that comes from the Sun and fills our entire solar system.

Learning about these particles in solar winds is vital for understanding interstellar matter, radiation that exists in space and the disks of plasma surrounding black holes.

'Plasma - Form - Matter - Universe - State

'Plasma is by far the most abundant form of visible matter in the universe, and is often in a highly dynamic and apparently chaotic state known as turbulence,' said lead author Dr Christopher Chen, from QMUL.

'This turbulence transfers energy to the particles in the plasma leading to heating and energisation, making turbulence and the associated heating very widespread phenomena in nature.'

Team - High-resolution - Measurements - NASA - Magnetospheric

The team used high-resolution measurements from NASA's Magnetospheric Multi-Scale (MMS) spacecraft together with a newly-developed data analysis technique.

The MMS is located in the solar wind and measures the fields and particles streaming past.

Landau - Damping - Name - Phenomenon - Transfer

Landau damping is the name of the phenomenon responsible for the transfer of energy from an electromagnetic wave into...
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