A magnetic boundary signature within flux transfer events |
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| Institution: | 1. Department of Environmental Engineering Sciences, Engineering School of Sustainable Infrastructure and Environment, University of Florida, Gainesville, FL 32611, USA;2. Department of Chemical Engineering, University of Florida, Gainesville, FL 32611, USA;3. NASA Glenn Research Center, Cleveland, OH 44135, USA;1. Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO, 80303, USA;2. NASA/SSERVI''s Institute for Modeling Plasma, Atmospheres and Cosmic Dust, Boulder, CO, 80303, USA;3. Department of Physics and Astronomy, University of Iowa, Iowa City, IA, 52242, USA;4. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, 91109, USA;1. Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China;2. College of Oceanography, Hohai University, Nanjing 210098, China;3. College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China;4. School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 330106, China;1. Texas A&M University at Qatar, Doha, Qatar;2. University of Florida, Gainesville, FL, USA |
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| Abstract: | We present high resolution AMPTE-UKS data for a FTE signature in the magnetosphere. When the observations are confronted with the canonical model for such events, we find that we can substantiate clearly the existence of the two field regions (draping vs twisting) predicted from the model. In addition to these regions there is a separate, distinct region close to the expected boundary between open and closed field lines which we estimate to be of order ten ion gyroradii thick. This region is distinguished by a distinctive field and particle signature. The magnetic signature has not been reported before, but the electron signature bears a close resemblance to the electron heat flow layer reported in the ISEE data by Scudder et al. 1984 in Magnetic Reconnection in Space and Laboratory Plasmas (Edited by Hones E.W., Jr.), p. 153. AGU, Washington]. Other observations we report are the occurrence of a large flow burst and, in the central region of the FTE signature, the presence of magnetic field oscillations of period ∼ 3 s. |
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