The Magnetosphere of Uranus: Hot Plasma and Radiation Environment

@article{Krimigis1986TheMO,
  title={The Magnetosphere of Uranus: Hot Plasma and Radiation Environment},
  author={Stamatios M. Krimigis and Thomas P. Armstrong and W. Ian Axford and Andrew F. Cheng and G. Gloeckler and D. C. Hamilton and Edwin P. Keath and Louis J. Lanzerotti and Barry H. Mauk},
  journal={Science},
  year={1986},
  volume={233},
  pages={102 - 97}
}
The low-energy charged-particle (LECP) instrument on Voyager 2 measured lowenergy electrons and ions near and within the magnetosphere of Uranus. Initial analysis of the LECP measurements has revealed the following. (i) The magnetospheric particle population consists principally of protons and electrons having energies to at least 4 and 1.2 megaelectron volts, respectively, with electron intensities substantially excceding proton intensities at a given energy. (ii) The intensity profile for… 
Hot Plasma and Energetic Particles in Neptune's Magnetosphere
TLDR
The low-energy charged particle (LECP) instrument on Voyager 2 measured within the magnetosphere of Neptune energetic electrons and ions in several energy channels, including compositional information at higher energies, using an array of solid-state detectors in various configurations.
Energetic Charged Particles in the Uranian Magnetosphere
TLDR
From the locations of the absorption signatures observed in the electron flux, a centered dipole model for the magnetic field of Uranus with a tilt of 60.1 degrees has been derived, and a rotation period of the planet of 17.4 hours has been calculated, providing independent confirmaton of more precise determinations made by other Voyager experiments.
The hot plasma and radiation environment of the Uranian magnetosphere
We report on the hot plasma and particle radiation environment of the magnetosphere of Uranus as diagnosed with the low-energy charged particle investigation on the Voyager 2 spacecraft (measuring
Energetic ion and electron phase space densities in the magnetosphere of Uranus
Voyager 2 low-energy charged particle (LECP) data from the magnetosphere of Uranus have been analyzed to obtain proton and electron phase space density profiles. The Uranus proton profiles show an
Energetic electrons at Uranus: Bimodal diffusion in a satellite limited radiation belt
The Voyager 2 cosmic ray experiment observed intense electron fluxes in the middle magnetosphere of Uranus. High counting rates in several of the solid-state detectors precluded the normal multiple
Proton and oxygen plasmas at Uranus
Despite the presence of several large, icy moons within the Uranian magnetosphere, the Voyager 2 spacecraft did not detect any heavy ion plasma. This paper estimates the heavy ion density that would
Effects of charged particles on the surfaces of the satellites of Uranus
Measurements of the ion and electron fluxes in the Uranian magnetosphere made by the low-energy charged particle (LECP) instrument on the Voyager 2 spacecraft are used to discuss possible
Survey of electrons in the Uranian magnetosphere: Voyager 2 observations
We present results of an analysis of the Voyager 2 plasma science experiment (PLS) electron measurements made during the Uranus encounter. The energy coverage is 10 eV ≤ E ≤ 5950 eV. The electron
Voyager 2 plasma ion observations in the magnetosphere of Uranus
Positive ion measurements in the magnetosphere of Uranus have been made by the Voyager 2 plasma science experiment. We present an overview of the entire data set and a detailed analysis of the
Structure and dynamics of the Uranian magnetotail - Results from hot plasma and magnetic field observations
Analysis of the Voyager 2 low-energy charged particle (LECP) and magnetic field (MAG) data in the Uranian magnetotail has shown this system to have many features similar to those seen at Earth.
...
...

References

SHOWING 1-10 OF 21 REFERENCES
General characteristics of hot plasma and energetic particles in the Saturnian magnetosphere: Results from the Voyager spacecraft
The low energy charged particle (LECP) experiment on the Voyager 1 and 2 spacecraft made measurements of the intensity, energy spectra, and spatial distributions of ions (30 keV ≲ E ≲ 150 MeV) and
Plasma Observations Near Uranus: Initial Results from Voyager 2
TLDR
Extensive measurements of low-energy positive ions and electrons in the vicinity of Uranus have revealed a fully developed magnetosphere, with the boundary of the hot plasma component at L = 5 associated either with Miranda or with the inner limit of a deeply penetrating, solar wind-driven magnetospheric convection system.
Energetic atomic and molecular ions in Saturn's magnetosphere
We present observations and analysis of the composition, energy spectra and spatial distribution of energetic ions (≳0.2 MeV/nucleon) in Saturn's magnetosphere outside of ∼4 Rs. Our results are based
The Low Energy Charged Particle (LECP) experiment on the Voyager spacecraft
The Low Energy Charged Particle (LECP) experiment on the Voyager spacecraft is designed to provide comprehensive measurements of energetic particles in the Jovian, Saturnian, Uranian and
Ultraviolet Spectrometer Observations of Uranus
TLDR
The high temperature of the atmosphere, the small size of Uranus, and the number density of hydrogen atoms in the thermosphere imply an extensive thermal hydrogen corona that reduces the orbital lifetime of ring particles and biases the size distribution toward larger particles.
Energetic ions upstream of Jupiter's bow shock
Comprehensive measurements of ion spectra, composition, and anisotropies over the energy range ∼30 keV to ∼5 MeV in Jupiter's foreshock, magnetosheath, and magnetopause were obtained by the
Magnetospheric origin of energetic (E ≥ 50 keV) ions upstream of the bow shock: The October 31, 1977, event
Simultaneous observations of energetic ions (≳50 keV) and electrons (≳220 keV) by the IMP-7 and IMP-8 spacecraft carrying identical instruments and located within the distant (∼37 Re) magnetotail and
Voyager 2 Radio Observations of Uranus
TLDR
Dynamically evolving radio events of various kinds embedded in these emissions suggest a Uranian magnetosphere rich in magnetohydrodynamic phenomena.
Ice sputtering by radiation belt protons and the rings of Saturn and Uranus
The outer portion of the rings of Saturn is probably immersed in intense particle radiation belts. We scale Pioneer 10 and 11 measurements to the Saturnian radiation belts and estimate that
...
...