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Rocket measurements of ULF electric fields and precipitating particles in the aurora |
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| Authors: | C Reeve U Fahleson B Maehlum A Pedersen P Rothwell |
| Institution: | 1. Space Science Department (SSD), ESTEC, Noordwijk, The Netherlands;2. Royal Institute of Technology, (RIT), Stockholm, Sweden;3. Dept. of Physics, University of Southampton, England;4. Norwegian Defence Research Establishment, (NDRE), Oslo, Norway |
| Abstract: | The electric component of ULF waves with a characteristic period of 1.5-3 s and an amplitude of tens of has been observed with a double probe on a rocket launched from Andöya in Norway into an aurora. The polarization of the waves was right and left handed nearly circular as well as nearly linear during different intervals of the flight. These measurements are compared with ELF and energetic electron measurements on the rocket and ULF measurements on the ground.Possible interpretations involving generation of the ULF waves by proton cyclotron resonance in the magnetotail or by streaming ions or electrons in the magnetosheath are outlined. |
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