Results 1 to 10 of about 421 (156)

Dynamics of the inner electron radiation belt: A review

Earth and Planetary Physics, 2023
The Van Allen radiation belts are an extraordinary science discovery in the Earth magnetosphere and consist of two electron belts. The inner Van Allen belt contains electrons of 10s to 100s keV; the outer belt consists mainly of 0.1−10 MeV electrons ...
YuXuan Li, Chao Yue, Ying Liu, Qiu-Gang Zong, Hong Zou, YuGuang Ye   +5 more
doaj   +2 more sources

Atmospheric losses of radiation belt electrons [PDF]

Journal of Geophysical Research, 2003
A numerical model of the low‐altitude energetic electron radiation belt, including the effects of pitch angle diffusion into the atmosphere and azimuthal drift, predicts lifetimes and longitude‐dependent loss rates as a function of electron energy and diffusion coefficient.
Selesnick, R. S., Blake, J. B., Mewaldt, R. A.   +2 more
exaly   +3 more sources

Processes in auroral oval and outer electron radiation belt [PDF]

Earth, Planets and Space, 2018
We have analyzed the role of auroral processes in the formation of the outer radiation belt, considering that the main part of the auroral oval maps to the outer part of the ring current, instead of the plasma sheet as is commonly postulated.
Elizaveta E. Antonova, Marina V. Stepanova, Pablo S. Moya, Victor A. Pinto, Vadim V. Vovchenko, Ilya L. Ovchinnikov, Nikita V. Sotnikov   +6 more
doaj   +4 more sources

Superfast precipitation of energetic electrons in the radiation belts of the Earth

Nature Communications, 2022
Energetic electron densities in the radiation belt increases during geomagnetic storms. Here, the authors show oblique whistler mode waves enhance electron losses and create strong fluxes of about 100 keV electrons precipitating into the atmosphere, that
Xiao-Jia Zhang, Anton Artemyev, Vassilis Angelopoulos, Ethan Tsai, Colin Wilkins, Satoshi Kasahara, Didier Mourenas, Shoichiro Yokota, Kunihiro Keika, Tomoaki Hori, Yoshizumi Miyoshi, Iku Shinohara, Ayako Matsuoka   +12 more
doaj   +5 more sources

The effect of continuous geomagnetic storms on enhancements of ultrarelativistic electrons in the Earth’s outer radiation belt

Frontiers in Astronomy and Space Sciences
Ultrarelativistic electrons (Ek > 3 MeV) are the most energetic electrons in the Earth’s outer radiation belt, which can cause serious damage to equipments on satellites. The evolutions of ultrarelativistic electrons during geomagnetic storm have been
Jingrun Chen, Jingrun Chen, Chaoling Tang, Chaoling Tang, Chaoling Tang, Xinxin Chu   +5 more
doaj   +3 more sources

Local heating of radiation belt electrons to ultra-relativistic energies [PDF]

Nature Communications, 2020
Electrons in the Van Allen radiation belts can have energies in excess of 7 MeV, however, the energization mechanism is debated. Here, the authors show phase space density peaks in magnetic coordinate space as a way of analyzing satellite observations ...
Hayley J. Allison, Yuri Y. Shprits
doaj   +7 more sources

A data assimilation-based forecast model of outer radiation belt electron fluxes

Earth and Planetary Physics, 2023
Because radiation belt electrons can pose a potential threat to the safety of satellites orbiting in space, it is of great importance to develop a reliable model that can predict the highly dynamic variations in outer radiation belt electron fluxes.
Yuan Lei, Xing Cao, BinBin Ni, Song Fu, TaoRong Luo, XiaoYu Wang   +5 more
doaj   +1 more source

Forecast of the Energetic Electron Environment of the Radiation Belts

Space Weather, 2022
AbstractDifferent modeling methodologies possess different strengths and weakness. For instance, data based models may provide superior accuracy but have a limited spatial coverage while physics based models may provide lower accuracy but provide greater spatial coverage. This study investigates the coupling of a data based model of the electron fluxes
Walker, S.N., Boynton, R.J., Shprits, Y.Y., Balikhin, M.A., Drozdov, A.Y.   +4 more
openaire   +5 more sources

Ultra-relativistic electrons in Jupiter's radiation belts [PDF]

Nature, 2002
Ground-based observations have shown that Jupiter is a two-component source of microwave radio emission: thermal atmospheric emission and synchrotron emission from energetic electrons spiralling in Jupiter's magnetic field. Later in situ measurements confirmed the existence of Jupiter's high-energy electron-radiation belts, with evidence for electrons ...
Bolton, S.J., Janssen, M.H.M., Thorne, R., Levin, S., Klein, M.C.A., Gulkis, S., Bastian, T., Sault, R., Elachi, C., Hofstadter, M., Bunker, A., Dulk, G., Gudim, E., Hamilton, G., Johnson, W.L., Leblanc, Y., Liepack, O., McLeod, R., Roller, J., Roth, L., West, R.L.   +20 more
openaire   +3 more sources

Is the Solar Wind Electron Strahl a Seed Population for the Earth’s Electron Radiation Belt?

Frontiers in Astronomy and Space Sciences, 2022
1) Since the outer electron radiation belt is lost on occasion, the radiation belt needs seed electrons to rebuild. 2) The clear candidate for that seed population is energetic substorm-injected electrons in the dipolar magnetosphere.
Joseph E. Borovsky, Andrei Runov
doaj   +1 more source