Two observed consequences of penetration electric fields |
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| Authors: | CY Huang WJ Burke CS Lin |
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| Institution: | 1. Air Force Research Laboratory Space Vehicles Directorate, AFRL/RVBXP, 29 Randolph Road, Hanscom AFB, MA 01731-3010, USA;2. Boston College Institute for Scientific Research, USA;1. Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Rd., Laurel, MD 20723, USA;2. Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Rd., Laurel, MD 20723, USA;3. Airforce Research Laboratory, Space Vehicles Directorate, Hanscom Air Force Base, Massachusetts, USA;4. Department of Atmospheric and Oceanic Sciences, University of California, Los Ageles, California, USA;5. Space Science Department, National Space Science and Technology Center, NASA Marshall Space Flight Center, Huntsville, Alabama, USA;1. State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, China;2. SSTD, Rutherford Appleton Laboratory, Chilton, Didcot, UK;1. Department of Physics, University of Helsinki and Helsinki Institute of Physics, P.O. Box 64, FI-00014 Helsinki, Finland;2. Finnish Meteorological Institute, P.O.Box 503, FIN-00101, Helsinki, Finland;3. University of Bergen, Department of Physics and Technology, Allgaten 55, N-5007 Bergen, Norway;1. University of Nova Gorica, Vipavska 13,5000 Nova Gorica, Slovenia;2. Institute of Experimental Physics, SAS, Ko?ice, Slovakia;3. University of Belgrade, Faculty of Mining and Geology, Physics Cathedra, Djusina 7, 11000 Belgrade, Serbia |
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| Abstract: | The influence of penetration electric fields (PEF) on storm-time energetic particles in the inner magnetosphere and on the stability of plasma in the low-latitude ionosphere is widely recognized. We describe two consequences of PEFs, regularly observed during magnetic storms that indicate their persistence throughout the main phases. These are (1) the presence of equatorial plasma bubbles (EPB) across the evening local time sector during main phases and their absence throughout recovery, and (2) detections of low-energy ion precipitation in the dawn sector equatorward of the auroral electron boundary. |
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