Current Magnetosphere News and Events

Current Magnetosphere News and Events, Magnetosphere News Articles.
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How do electrons close to Earth reach almost the speed of light?
In the Van Allen radiation belts, electrons can reach almost speed of light. Hayley Allison and Yuri Shprits, German Research Centre for Geosciences, have revealed conditions for such strong accelerations. They had demonstrated in 2020: during solar storm plasma waves play a crucial role. However, it remained unclear why ultra-relativistic electron energies are not achieved in all solar storms. In Science Advances they now show: extreme depletions of the background plasma density are crucial. (2021-02-02)

Killer electrons in strumming sky lights
Wisps of pulsating aurora lights are a rare, yet magical sight. Now, scientists suggest they could be associated with destruction of part of the ozone. (2020-11-30)

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)

FAST reveals mystery of fast radio bursts from the universe
The Five-hundred-meter Aperture Spherical Radio Telescope (FAST) has revealed some mystery of the fast radio bursts, according to a study published in Nature on Oct. 28. (2020-11-04)

Researchers find "missing link" between magnetars and rotation-powered pulsars
Researchers from the RIKEN Cluster for Pioneering Research have made observations of a new magnetar, called Swift J1818.0-1607, which challenges current knowledge about two types of extreme stars, known as magnetars and pulsars. (2020-10-08)

Giant particle accelerator in the sky
A new study led by researchers from GFZ German Research Centre for Geosciences shows that electrons in the radiation belts can be accelerated to very high speeds locally. The study shows that magnetosphere works as a very efficient particle accelerator speeding up electrons to so-called ultra-relativistic energies. (2020-09-10)

Aurora mysteries unlocked with NASA's THEMIS mission
A special type of aurora, draped east-west across the night sky like a glowing pearl necklace, is helping scientists better understand the science of auroras and their powerful drivers out in space. (2020-08-14)

New research deepens understanding of Earth's interaction with the solar wind
A team of scientists at PPPL and Princeton University has reproduced a process that occurs in space to deepen understanding of what happens when the Earth encounters the solar wind. (2020-06-02)

MAVEN maps electric currents around mars that are fundamental to atmospheric loss
Five years after NASA's MAVEN spacecraft entered into orbit around Mars, data from the mission has led to the creation of a map of electric current systems in the Martian atmosphere. (2020-05-26)

Final images from Cassini spacecraft
Researchers are busy analysing some of the final data sent back from the Cassini spacecraft which has been in orbit around Saturn for more than 13 years until the end of its mission in September 2017. For the last leg of its journey, Cassini was put on a particularly daring orbit passing between Saturn and its rings which brought it closer to Saturn than ever before, allowing scientists to obtain images of Saturn's ultraviolet auroras in unprecedented resolution. (2020-01-14)

Nightside barrier gently brakes 'bursty' plasma bubbles
Rice space plasma physicists develop algorithms to measure the buoyancy waves that appear in thin filaments of magnetic flux on Earth's nightside. The work adds to the Rice Convection Model that helps scientists understand space weather. (2019-12-20)

Finding a killer electron hot spot in Earth's Van Allen radiation belts
JAXA and NASA satellite observations show where killer electrons are generated in the Van Allen radiation belts surrounding Earth. (2019-12-13)

It's not aurora, it's STEVE
Researchers recently confirmed that the aurora-like lights known as STEVE are not actually aurora, but instead a unique phenomenon. The project used a spectrograph to examine the light from the phenomenon and identify what kind of emissions they give and in what patterns and wavelengths. Results could help scientists further understand how space weather affects technology used in processes such as communications between Earth and spacecraft. (2019-09-04)

Scientists deepen understanding of magnetic fields surrounding Earth and other planets
Now, a team of scientists has completed research into waves that travel through the magnetosphere, deepening understanding of the region and its interaction with our own planet, and opening up new ways to study other planets across the galaxy. (2019-07-12)

Alternating currents cause Jupiter's aurora
An international research team has measured the system of currents that generates Jupiter's aurora. The scientists found out that sulphur dioxide gas from the gas giant's Moon Io is the cause of the system of currents. (2019-07-11)

A new method for 3D reconstructions of eruptive events on sun
An international team of scientists, led by Skoltech professor Tatiana Podladchikova, has developed a new 3D method for reconstructing space weather phenomena; in particular, the shock waves produced by the Sun's energy outbursts. Their findings can help better understand and predict extreme space weather occurrences that affect the operation of engineering systems in space and on Earth. The results of their study were published in The Astrophysical Journal. (2019-06-05)

Scientists discover what powers celestial phenomenon STEVE
The celestial phenomenon known as STEVE is likely caused by a combination of heating of charged particles in the atmosphere and energetic electrons like those that power the aurora, according to new research. In a new study, scientists found STEVE's source region in space and identified two mechanisms that cause it. (2019-04-25)

And the blobs just keep on coming
Scientists re-inspected 45-year-old Helios data, finding long trains of massive blobs -- like lava lamp's otherworldly bubbles, but 50 to 500 times the size of Earth -- that ooze from the sun every 90 minutes or so. (2019-04-04)

Probability of catastrophic geomagnetic storm lower than estimated
According to a group of mathematics researchers, the probability in the following decade of the sun causing a storm strong enough to affect electrical and communication infrastructures around the globe 'only' reaches 1.9 percent maximum. Nevertheless, the event would produce severe consequences and governments should be prepared, researchers warn. (2019-03-12)

In solar system's symphony, Earth's magnetic field drops the beat
Inside Earth's magnetic bubble, scientists have long been listening in on space sounds created by various electromagnetic waves, and now they've found one that booms like a drum. (2019-02-12)

Kazan University puts forth ideas on the nature of dark matter
As we currently know, dark energy and dark matter comprise 96 percent of the total mass of the Universe. Two main hypotheses about the nature of dark matter are presently debated. One of them posits that dark matter consists of massive compact halo objects, the other ascribes this property to weakly interacting mass particles. (2019-02-05)

Visualization of regions of electromagnetic wave-plasma interactions surrounding the Earth
The researchers investigated wave-particle interactions between energetic electrons and chorus waves evolving in the space surrounding the Earth, using the scientific satellite Arase and, simultaneously, transient auroral flashes by the ground-based global observation network. The investigation visualized asymmetric spatial development of wave-particle interaction regions on the order of sub-seconds. This is expected to contribute to the safe and secure exploration of space, e.g., by establishing hazard maps of the space electromagnetic environment. (2019-02-04)

Juno mission captures images of volcanic plumes on Jupiter's moon Io
The Juno spacecraft captured new images of a volcanic plume on Jupiter's moon Io during a December 21 flyby. JunoCam, the Stellar Reference Unit (SRU), the Jovian Infrared Auroral Mapper (JIRAM), and the Ultraviolet Imaging Spectrograph (UVS) observed Io for over an hour, providing a glimpse of the moon's polar regions as well as evidence of an active eruption. (2018-12-31)

Ionosphere plasma experiments reviewed in a new Kazan University publication
There are only a few so-called 'heaters' in the world -- special facilities which create artificial plasma processes in the upper atmosphere by heating them. (2018-12-13)

Experiments at PPPL show remarkable agreement with satellite sightings
Feature describes striking similarity of laboratory research findings with observations of the four-satellite Magnetospheric Multiscale Mission that studies magnetic reconnection in space. (2018-12-07)

Macroscopic phenomena governed by microscopic physics
Researchers at Osaka University observe a magnetic reconnection driven by electron dynamics in laser-produced plasmas. Magnetic reconnections are often observed in the magnetic flux on the Sun and the Earth's magnetosphere. It has been highly challenging to reveal the electron scale, microscopic information in the vast universe. Applying a weak magnetic field, where only electrons are directly coupled with the magnetic field, we observed a plasmoid and cusp-like features typical to magnetic reconnections. (2018-12-03)

Auroras unlock the physics of energetic processes in space
A close study of auroras has revealed new ways of understanding the physics of explosive energy releases in space, according to new UCL-led research. (2018-11-15)

SwRI scientists map magnetic reconnection in Earth's magnetotail
Analyzing data from NASA's Magnetospheric Multiscale (MMS) mission, a team led by Southwest Research Institute (SwRI) has found that the small regions in the Earth's magnetosphere that energize the polar aurora are remarkably calm and nonturbulent. (2018-11-15)

Ultra-hot gas around remnants of sun-like stars
Solving a decades-old mystery, an international team of astronomers have discovered an extremely hot magnetosphere around a white dwarf, a remnant of a star like our sun. The work was led by Dr. Nicole Reindl, Research Fellow of the Royal Commission 1851, based at the University of Leicester, and is published today in the journal Monthly Notices of the Royal Astronomical Society. (2018-11-06)

No longer whistling in the dark: Scientists uncover source of perplexing waves
Using data from a NASA four-satellite mission that is studying reconnection, scientists have developed a method for identifying the source of waves that help satellites determine their location in space. (2018-09-25)

Wave-particle interactions allow collision-free energy transfer in space plasma
A team including researchers from Nagoya University finds evidence of collisionless energy transfer occurring in the plasma of Earth's magnetosphere. (2018-09-19)

Measurements reveal a two-step energy flow process in Earth's magnetosphere
Scientists have obtained in situ measurements of Earth's magnetosphere, demonstrating a phenomenon that's long been thought to happen but not yet directly been shown: energy is transferred from hydrogen ions to plasma waves, and then from the waves to helium ions. (2018-09-06)

Unraveling the nature of 'whistlers' from space in the lab
Scientists at the University of California, Los Angeles present research on a curious cosmic phenomenon known as 'whistlers' -- very low frequency packets of radio waves that race along magnetic field lines. Appearing in the Physics of Plasmas, the study provides new insights into the nature of whistlers and space plasmas and could one day aid in the development of practical plasma technologies with magnetic fields, including spacecraft thrusters that use charged particles as fuel. (2018-08-14)

Satellite measurements of the Earth's magnetosphere promise better space weather forecasts
A Japan-based research team led by Kanazawa University equipped the Arase satellite with sensors to study the convoluted interactions between high-energy particles in the inner magnetosphere and the Earth's electric and magnetic field. They have collected their first set of data from the satellite and from ground-based sensors, which they will soon analyze. Their approach promises to provide better predictions of harmful bursts of high-energy particles from the magnetosphere. (2018-08-09)

Russian and Georgian universities unite to study properties of solitons
Dr. Belashov explains, (2018-06-05)

Reconnection tames the turbulent magnetic fields around Earth
Wherever magnetic fields occur in the cosmos, their field lines tend to cross and reconnect, spitting out charged particles. To date, space scientists have studied these short circuits in the near-Earth environment, but only in rather calm regions of the magnetosphere. Now scientists led by Tai Phan at UC Berkeley have seen how turbulent magnetic fields reconnect in the much more violent magnetosheath. While normal reconnection generates ion jets, turbulent reconnection creates electron jets. (2018-05-09)

NASA spacecraft discovers new magnetic process in turbulent space
Explorations in Earth's space environment by NASA's Magnetospheric Multiscale spacecraft have discovered a surprising new magnetic event in turbulent plasma. (2018-05-09)

NASA spacecraft finds new type of magnetic explosion
Four NASA spacecraft have observed magnetic reconnection in a turbulent region of the Earth's outer atmosphere known as the magnetosheath, the planet's first line of defense against the intensity of the solar wind. The new insights could help us understand how such phenomena affect Earth's atmosphere because of the potential impact on astronauts in space, satellites and electrical power industries. (2018-05-09)

Old data, new tricks: Fresh results from NASA's Galileo spacecraft 20 years on
Newly analyzed data from the Galileo spacecraft's flybys of one of Jupiter's moons two decades ago is yielding fresh insights: the magnetic field around the moon Ganymede makes it unlike any other in the solar system. (2018-04-30)

Pulsating Aurora mysteries uncovered with help from NASA's THEMIS mission
The precise mechanism driving pulsating auroras, long unknown, has now been identified with help from NASA's THEMIS mission. (2018-02-20)

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