First measurements of electron vorticity in the foreshock and solar wind

We describe the methodology used to set up and compute spatial derivatives of the electron moments using data acquired by the Plasma Electron And Current Experiment (PEACE) from the four Cluster spacecraft. The results are used to investigate electron vorticity in the foreshock. We find that much of...

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Published in:Annales geophysicae (1988) 2010-12, Vol.28 (12), p.2187-2200
Main Authors: GURGIOLO, C, GOLDSTEIN, M. L, VINA, A. F, FAZAKERLEY, A. N
Format: Article
Language:English
Subjects:
Earth, ocean, space
Exact sciences and technology
External geophysics
Magnetic fields
Measurement
Physics of the ionosphere
Physics of the magnetosphere
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container_issue 12
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container_title Annales geophysicae (1988)
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creator GURGIOLO, C
GOLDSTEIN, M. L
VINA, A. F
FAZAKERLEY, A. N
description We describe the methodology used to set up and compute spatial derivatives of the electron moments using data acquired by the Plasma Electron And Current Experiment (PEACE) from the four Cluster spacecraft. The results are used to investigate electron vorticity in the foreshock. We find that much of the measured vorticity, under nominal conditions, appears to be caused by changes in the flow direction of the return (either reflected or leakage from the magnetosheath) and strahl electron populations as they couple to changes in the magnetic field orientation. This in turn results in deflections in the total bulk velocity producing the measured vorticity.
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subjects Earth, ocean, space
Exact sciences and technology
External geophysics
Magnetic fields
Measurement
Physics of the ionosphere
Physics of the magnetosphere
title First measurements of electron vorticity in the foreshock and solar wind
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