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Letter to the Editor Low-frequency Electric Field Fluctuations and Field-aligned Electron Beams Around the Edge of an Auroral Acceleration Region : Volume 19, Issue 3 (30/11/-0001)

By Miyake, W.

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Book Id: WPLBN0004000867
Format Type: PDF Article :
File Size: Pages 5
Reproduction Date: 2015

Title: Letter to the Editor Low-frequency Electric Field Fluctuations and Field-aligned Electron Beams Around the Edge of an Auroral Acceleration Region : Volume 19, Issue 3 (30/11/-0001)  
Author: Miyake, W.
Volume: Vol. 19, Issue 3
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
-0001
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Mukai, T., Matsuoka, A., Yoshioka, R., Nagatsuma, T., & Miyake, W. (-0001). Letter to the Editor Low-frequency Electric Field Fluctuations and Field-aligned Electron Beams Around the Edge of an Auroral Acceleration Region : Volume 19, Issue 3 (30/11/-0001). Retrieved from http://www.ebooklibrary.org/


Description
Description: Communications Research Laboratory, 4–2–1, Nukui-kita, Koganei, Tokyo 184–8795, Japan. Electron beams narrowly collimated to the magnetic field line were observed continuously from a down-ward current region to an auroral acceleration region (i.e., upward current region). They were well correlated with low-frequency electric field fluctuations in the auroral acceleration region as well as in the adjacent downward current region. Magnetic field fluctuations were found only in the downward current region. The analysis suggests that static field-aligned electric fields are not fully responsible for the filed-aligned electron acceleration; the ac electric field, presumably associated with Alfvenic fluctuations, should also be involved in the acceleration of ionospheric electrons.

Key words. Ionosphere (particle acceleration) – Magnetospheric physics (auroral phenomena; magnetosphere-ionosphere interactions)


Summary
Letter to the Editor
Low-frequency electric field fluctuations and field-aligned electron beams around the edge of an auroral acceleration region



 

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