Baumjohann, W.; Untiedt, J.; Greenwald, R. A.: Joint two-dimensional observations of ground magnetic and ionospheric electric fields associated with auroral zone currents. 1. Three-dimensional current flow associated with a substorm-intensified eastward electrojet. Journal Geophysical Research 85, p. 1963 (1980)
Greenwald, R. A.; Potemra, T. A.; Saflekos, N. A.: STARE and TRIAD observations of field-aligned current closure and Joule heating in the vicinity of the Harang discontinuity. Journal Geophysical Research 85, p. 563 (1980)
Zanetti Jr., L. J.; Arnoldy, R. L.; Chahill Jr., L. J.; Behm, D. A.; Greenwald, R. A.: Comparative rocket observations of ionospheric electric fields in the auroral oval. Space Sci. Instr. 5, p. 183 (1980)
Greenwald, R. A.: An alternative explanation of the Doppler spectra of current-driven plasma instabilties. Journal Geophysical Research 84, p. 433 (1979)
Walker, A. D. M.; Greenwald, R. A.; Stuart, W. F.; Green, C. A.: STARE auroral radar observations of Pc5 geomagnetic pulsations. Journal Geophysical Research 84, p. 3373 (1979)
Baumjohann, W.; Greenwald, R. A.; Küppers, F.: Joint magnetometer array and radar backscatter observations of auroral current in northern Scandinavia. J. Geophys. 44, p. 373 (1978)
Cahill, L. J.; Greenwald, R. A.; Nielsen, E.: Auroral radar and rocket double probe observations of the electric field across the Harang discontinuity. Geophysical Research Letters 5, p. 687 (1978)
Greenwald, R. A.; Weiss, W.; Nielsen, E.; Thomson, N. R.: STARE: The new radar auroral backscatter experiment in northern Scandinavia. Radio Science 13, p. 1021 (1978)
Nielsen, E.; Greenwald, R. A.: Variations in ionospheric currents and electric fields in association with absorption spikes during the substorm expansion phase. Journal Geophysical Research 83, p. 5645 (1978)
Walker, A. D. M.; Greenwald, R. A.; Stuart, W. F.; Green, C. A.: Resonance region of Pc5 micropulsation examined by dual auroral radar system. Nature 273, p. 646 (1978)
Greenwald, R. A.: Studies of currents and electric fields in the auroral zone ionospheric using radar auroral backscatter. In: Dynamics of the magnetosphere (Ed. Akasofu, S.-I.). D. Reidel, Publishing Company, Dordrecht, Holland (1979)
Sofko, G. J.; Greenwald, R. A.; Korth, A.; Kremser, G.: STARE ionospheric electron flow during the August 28/78 GEOS-2 magnetopause crossing. In: Proceedings of Magnetospheric Boundary Layers Conference, Alpbach, 11-15 June 1979, pp. 183 - 185. ESA Publ. Div., Noordwijk (1979)
Greenwald, R. A.: STARE: A new possibility for coordinated ground-based and rocket research in northern Scandinavia. In: Proceedings of Esrange Symposium, Ajaccio, 24-29 April 1978. ESA Publ. Div., Noordwijk (1978)
The dwarf planet is a bizarre, cryovolcanic world. However, the organic deposits discovered on its surface so far are unlikely to originate from its interior.
The Uranian magnetic field is more expansive than previously thought, according to newly analyzed data from Voyager 2, making it easier to search for moons with oceans.
The Planetary Plasma Environments group (PPE) has a strong heritage in the exploration of planetary magnetospheres and space plasma interactions throughout the solar system. It has contributed instruments to several past missions that flew-by or orbited Jupiter (Galileo, Cassini, Ulysses). The PPE participates in the JUICE mission by contributing hardware and scientific expertise to the Particle Environment Package (PEP).