Kohl, H.; Kopka, H.; La Hoz, C.; Stubbe, P.: Propagation of artificially excited Langmuir waves in the ionosphere. Radio Science 22, pp. 655 - 661 (1987)
Rietveld, M. T.; Mauelshagen, H.-P.; Stubbe, P.; Kopka, H.; Nielsen, E.: The characteristics of ionospheric heating-produced ELF/VLF waves over 32 hours. Journal Geophysical Research 92, p. 8707 (1987)
Barr, R.; Stubbe, P.; Rietveld, M. T.; Kopka, H.: ELF and VLF signals radiated by the ``Polar Electrojet Antenna'': Experimental results. Journal Geophysical Research 91, pp. 4451 - 4459 (1986)
Barr, R.; Stubbe, P.; Rietveld, M. T.; Kopka, H.: ELF and VLF signals radiated by the "Polar Electrojet Antenna": experimental results. Journal Geophysical Research 91, pp. 4451 - 4459 (1986)
Hanuise, C.; Hedberg, A.; Oksman, J.; Nielsen, E.; Stubbe, P.; Kopka, H.: Comparison between the ionospheric plasma drift and the motion of artificially induced irregularities as observed by HF backscatter radars. Annales Geophysicae 4, p. 49 (1986)
Hedberg, Å.; Derblom, H.; Hamberg, G.; Thidé, B.; Kopka, H.; Stubbe, P.: Measurements of HF backscatter cross section for striations created by ionospheric heating at different power levels. Radio Science 21, pp. 117 - 125 (1986)
Jones, T. B.; Robinson, T. R.; Stubbe, P.; Kopka, H.: EISCAT observations of the heated ionosphere. Journal of Atmospheric and Terrestrial Physics 48, pp. 1027 - 1035 (1986)
Rietveld, M. T.; Kopka, H.; Stubbe, P.: D-region characteristics deduced from pulsed ionospheric heating under auroral electrojet conditions. Journal of Atmospheric and Terrestrial Physics 48, pp. 311 - 326 (1986)
Barr, R.; Rietveld, M. T.; Stubbe, P.; Kopka, H.: The diffraction of VLF radio waves by a patch of ionosphere illuminated by a powerful HF transmitter. Journal Geophysical Research 90, pp. 2861 - 2875 (1985)
Djuth, F. T.; Rost, R. J.; Noble, S. T.; Gordon, W. E.; Stubbe, P.; Kopka, H.; Nielsen, E.; Bostrom, R.; Derblom, H.; Hedberg, A.et al.; Thide, B.: Observations of E-region irregularities generated at auroral latitudes by a higher-power radio wave. Journal Geophysical Research 90, p. 12293 (1985)
Holt, O.; Brekke, A.; Hansen, T.; Kopka, H.; Stubbe, P.: HF modification of the auroral D-region detected by a partial reflection experiment. Journal of Atmospheric and Terrestrial Physics 47, pp. 537 - 545 (1985)
Holt, O.; Brekke, A.; Hansen, T.; Kopka, H.; Stubbe, P.: HF modification of the auroral d-region detected by a partial reflection experiment. Journal of Atmospheric and Terrestrial Physics 47, pp. 537 - 545 (1985)
Barr, R.; Rietveld, M. T.; Kopka, H.; Stubbe, P.: Effect of a heated patch of auroral ionosphere on VLF-radio wave propagation. Nature 309, pp. 534 - 536 (1984)
Frey, A.; Stubbe, P.; Kopka, H.: First experimental evidence of HF produced electron density irregularities in the polar ionosphere, diagnosed by UHF radio star scintillations. Geophysical Research Letters 11, pp. 523 - 526 (1984)
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).
The MPS instruments on board ESA’s JUICE spacecraft have successfully completed their commissioning in space - and delivered their first observational data.
A collision nearly 30 years ago permanently changed Jupiter's atmospheric chemistry; the aftermath is still helping to better understand the gas giant.
The launch was successful; the ESA’s space probe JUICE is now on its way to the Jupiter system. There, it will primarily study the gas giant's icy moons.
ESA's space probe is on the move: First it heads for the launch site in Kourou - and in April it will begin its long journey to Jupiter and its icy moons.