Sentences with phrase «electron radiation belts»

Rad - Sat is led by Professor Richard Horne at BAS and brings together scientists from BAS and 4 UK universities with representatives from space insurance and satellite operators to deepen our understanding of the electron radiation belts and improve our forecasting capability.

More recently, Lorenzato et al. (2012) adapted the Salammbô three - dimensional physical radiation belt model for Saturn's electron radiation belts (Santos - Costa et al. 2003).

Several modelling studies have been performed to describe the electron radiation belts taking into account mainly the radial diffusion processes (Hood 1983, Santos - Costa et al. 2003).

While the proton radiation belts are characterized by stability, this is not the case for the electron radiation belts that are characterized by both complex temporal and spatial variations.

The solar UV irradiance from the thermosphere of Saturn and the solar wind are the most probable sources to account for the long - term variability of the electron radiation belts (Roussos et al. 2014), suggesting that external drivers play indeed an important role in Saturn's magnetospheric dynamics.

Not exact matches

Earth's magnetic field deflects most solar electrons and traps others in doughnut - shaped radiation belts that girdle the planet.

The CubeSat mission, called the Colorado Student Space Weather Experiment (CSSWE), housed a small telescope to measure the flux of solar energetic protons and Earth's radiation belt electrons.

«We are reporting the first direct detection of these energetic electrons near the inner edge of Earth's radiation belts,» said Li.

The Van Allen Probes measure particle, electric and magnetic fields, or basically everything in the radiation belt environment, including the electrons, which descend following Earth's magnetic field lines that converge at the poles.

In a quest to better predict space weather, the Dartmouth researchers study the radiation belts from above and below in complementary approaches — through satellites (the twin NASA Van Allen Probes) high over Earth and through dozens of instrument - laden balloons (BARREL, or Balloon Array for Radiation belt Relativistic Electron Losses) at lower altitudes to assess the particles that rain down.

The scientific successes for the Van Allen Probes began almost immediately after launch, starting with a discovery made when scientists turned on the Relativistic Electron Proton Telescope (REPT) instrument on Sept. 1: a new third radiation belt, formed at the interior of the outer belt.

Tobiska believes these events can liberate energetic electrons from the outer Van Allen radiation belts, regions of Earth's magnetosphere where charged particles — mostly from the solar wind — get trapped.

From GPS orbit (roughly 12,600 miles above Earth), satellite - borne sensors probe the largest radiation belt — consisting mainly of energetic electrons.

Understanding the processes that control the formation and ultimate loss of such relativistic electrons is a primary science objective of the Van Allen Probes and has important practical applications, because of the enormous amounts of radiation trapped within the two Van Allen radiation belts.

They found that in the absence of the cloud, electromagnetic waves accelerated large numbers of electrons to high speed in Earth's inner radiation belt, causing a huge increase in radiation there.

Such electrons in Earth's outer radiation belt can exhibit pronounced increases in intensity, in response to activity on the sun, and changes in the solar wind — but the dominant physical mechanisms responsible for such radiation belt electron acceleration has remained unresolved for decades.

He theorizes that some positively charged high - energy particles, including protons and helium ions, in the outer radiation belts acquire negatively charged electrons from the cold gases around Saturn.

«Each new orbit brings us closer to the heart of Jupiter's radiation belt, but so far the spacecraft has weathered the storm of electrons surrounding Jupiter better than we could have ever imagined,» said Nybakken.

A Los Alamos Fellows Prize recipient, Reeves recently helped solve a 50 - year - old space mystery about how electrons within Earth's Van Allen radiation belts can become energetic enough to kill orbiting satellites.

The British Antarctic Survey (BAS) has a 3 year, fixed term appointment available as part of a NERC funded project: Modelling the acceleration, transport and loss of radiation belt electrons to protect satellites from space weather (Rad - Sat).

The work will be performed in the context of a new NERC - funded consortium led by the British Antarctic Survey (Rad - Sat) whose goal is to model the acceleration, transport and loss of radiation belt electrons to protect satellites from space weather.

Radio astronomers discovered intense belts of radiation surrounding Jupiter created by electrons trapped in its powerful magnetic field — 10x the Earth's!

«What we're seeing is a much more dynamic, much more rapidly changing outer radiation belt than we expected to see,» said Daniel Baker, principal investigator of the Van Allen Probes Relativistic Electron Proton Telescope instrument.