scholarly journals Alfvén waves and Poynting flux observed simultaneously by Polar and FAST in the plasma sheet boundary layer

2005 ◽  
Vol 110 (A12) ◽  
Author(s):  
J. Dombeck ◽  
C. Cattell ◽  
J. R. Wygant ◽  
A. Keiling ◽  
J. Scudder
Keyword(s):  
Boundary Layer ◽  
Plasma Sheet ◽  
Alfven Waves ◽  
Alfvén Waves ◽  
Plasma Sheet Boundary Layer ◽  
Poynting Flux

scholarly journals Some properties of Alfvén waves: Observations in the tail lobes and the plasma sheet boundary layer

2005 ◽  
Vol 110 (A10) ◽  
Author(s):  
A. Keiling ◽  
G. K. Parks ◽  
J. R. Wygant ◽  
J. Dombeck ◽  
F. S. Mozer ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Plasma Sheet ◽  
Alfven Waves ◽  
Alfvén Waves ◽  
Plasma Sheet Boundary Layer

Evidence for kinetic Alfvén waves and parallel electron energization at 4-6REaltitudes in the plasma sheet boundary layer

2002 ◽  
Vol 107 (A8) ◽  
pp. SMP 24-1-SMP 24-15 ◽  
Author(s):  
J. R. Wygant ◽  
A. Keiling ◽  
C. A. Cattell ◽  
R. L. Lysak ◽  
M. Temerin ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Plasma Sheet ◽  
Alfven Waves ◽  
Alfvén Waves ◽  
Plasma Sheet Boundary Layer ◽  
Kinetic Alfvén Waves

scholarly journals Energy-dispersed ions in the plasma sheet boundary layer and associated phenomena: Ion heating, electron acceleration, Alfvén waves, broadband waves, perpendicular electric field spikes, and auroral emissions

2006 ◽  
Vol 24 (10) ◽  
pp. 2685-2707 ◽  
Author(s):  
A. Keiling ◽  
G. K. Parks ◽  
H. Rème ◽  
I. Dandouras ◽  
M. Wilber ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Electric Field ◽  
Energy Flux ◽  
Plasma Sheet ◽  
Alfven Waves ◽  
Ion Beams ◽  
Alfvén Waves ◽  
Plasma Sheet Boundary Layer ◽  
Field Lines ◽  
Auroral Emissions

Abstract. Recent Cluster studies reported properties of multiple energy-dispersed ion structures in the plasma sheet boundary layer (PSBL) that showed substructure with several well separated ion beamlets, covering energies from 3 keV up to 100 keV (Keiling et al., 2004a, b). Here we report observations from two PSBL crossings, which show a number of identified one-to-one correlations between this beamlet substructure and several plasma-field characteristics: (a) bimodal ion conics (<1 keV), (b) field-aligned electron flow (<1 keV), (c) perpendicular electric field spikes (~20 mV/m), (d) broadband electrostatic ELF wave packets (<12.5 Hz), and (e) enhanced broadband electromagnetic waves (<4 kHz). The one-to-one correlations strongly suggest that these phenomena were energetically driven by the ion beamlets, also noting that the energy flux of the ion beamlets was 1–2 orders of magnitude larger than, for example, the energy flux of the ion outflow. In addition, several more loosely associated correspondences were observed within the extended region containing the beamlets: (f) electrostatic waves (BEN) (up to 4 kHz), (g) traveling and standing ULF Alfvén waves, (h) field-aligned currents (FAC), and (i) auroral emissions on conjugate magnetic field lines. Possible generation scenarios for these phenomena are discussed. In conclusion, it is argued that the free energy of magnetotail ion beamlets drove a variety of phenomena and that the spatial fine structure of the beamlets dictated the locations of where some of these phenomena occurred. This emphasizes the notion that PSBL ion beams are important for magnetosphere-ionosphere coupling. However, it is also shown that the dissipation of electromagnetic energy flux (at altitudes below Cluster) of the simultaneously occurring Alfvén waves and FAC was larger (FAC being the largest) than the dissipation of beam kinetic energy flux, and thus these two energy carriers contributed more to the energy transport on PSBL field lines from the distant magnetotail to the ionosphere than the ion beams.

Alfven Waves in a Plasma Sheet Boundary Layer Associated with Near-Tail Magnetic Reconnection

2007 ◽  
Vol 24 (4) ◽  
pp. 1122-1124
Author(s):  
Yuan Zhi-Gang ◽  
Deng Xiao-Hua ◽  
Pang Ye ◽  
Li Shi-You ◽  
Wang Jing-Fang
Keyword(s):  
Boundary Layer ◽  
Magnetic Reconnection ◽  
Plasma Sheet ◽  
Alfven Waves ◽  
Alfvén Waves ◽  
Plasma Sheet Boundary Layer
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