HR: 0830h
AN: SM21B-0213    [PDF]
TI: Cluster Wideband Observations of Low Frequency Bursts
AU: * Anderson, R R
EM: roger-r-anderson@uiowa.edu
AF: The University of Iowa, Department of Physics and Astronomy, Iowa City, IA 52242 United States
AU: Gurnett, D A
EM: donald-gurnett@uiowa.edu
AF: The University of Iowa, Department of Physics and Astronomy, Iowa City, IA 52242 United States
AU: Pickett, J S
EM: pickett@uiowa.edu
AF: The University of Iowa, Department of Physics and Astronomy, Iowa City, IA 52242 United States
AU: Matsumoto, H
EM: matsumot@kurasc.kyoto-u.ac.jp
AF: Kyoto University, Radio Science Center for Space and Atmosphere, Gokasho, Uji, Kyoto, 611-0011 Japan
AU: Nagano, I
EM: nagano@ec.t.kanazawa-u.ac.jp
AF: Kanazawa University, Department of Electrical and Computer Engineering, Faculty of Technology, 2-40-20, Kodatsuno, Kanazawa, 920 Japan
AU: Yagitani, S
EM: yagitani@ec.t.kanazawa-u.ac.jp
AF: Kanazawa University, Department of Electrical and Computer Engineering, Faculty of Technology, 2-40-20, Kodatsuno, Kanazawa, 920 Japan
AB: On many occasions the Cluster Wideband (WBD) experiments, when operating in the 77 kHz mode, have detected bursts of emissions with primarily vertical structure extending from the upper frequency limits down to a few tens of kHz. Simultaneous observations from the Geotail Plasma Wave Instrument and the Wind Waves experiment show that those emissions are low frequency bursts. The high-frequency resolution and high-time resolution Cluster WBD measurements show that for the majority of the observations, the fine structure is quite similar to that observed for the higher frequency Auroral Kilometric Radiation. However, for some observations, the fine structure resembled that for escaping continuum and kilometric continuum radiation. The different implications for the sources and propaagation paths of the emissions will be discussed.
DE: 2704 Auroral phenomena (2407)
DE: 2772 Plasma waves and instabilities
SC: SPA - Magnetospheric Physics [SM]
MN: 2003 Fall Meeting