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Title: Wave-particle interactions at the magnetopause: Contributions to the dayside aurora

Abstract

A strong correlation between intense, broad-band 10--10/sup 5/ Hz plasma waves and 1--6 keV electrons and protons are observed on ISEE and 2 at the low latitude dayside magnetopause. Wave and particle features have been characterized by taking averages over ten events. The 10--10/sup 3/ Hz magnetic waves and the 10--10/sup 5/ Hz electric emissions can be represented by the power-law spectra, I/sub m/ = 10 f/sup -3.9/ nT/sup 2//Hz and I/sub e/ = 3 x 10/sup -5/ f/sup -2.8/ V/sup 2//m/sup 2/ Hz, respectively. The electron and proton fluxes and spectral shapes are nearly constant from event-to-event, and are characterized by j/sup -/ = 3 x 10/sup 5/ E/sup -1.8/ cm/sup -2/ sec/sup -1/ ster/sup -1/ keV/sup -1/ and j/sup +/ = 10/sup 7/ E/sup -2.5/ cm/sup -2/ sec/sup -1/ ster/sup -1/ keV/sup -1/. Using typical magnetopause plasma and field values of 20 cm/sup -3/ and 50 nT, it is shown tha the 1--10 keV electrons and protons are scattered near the limit of strong pitch angle diffusion by the observed waves. A precipitation flux of approx.0.15 ergs/cm/sup 2/ sec is calculated, indicating a significant contribution to the dayside aurora.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109
OSTI Identifier:
5988884
Resource Type:
Journal Article
Journal Name:
Geophys. Res. Lett.; (United States)
Additional Journal Information:
Journal Volume: 8:2
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; MAGNETOPAUSE; AURORAE; PLASMA WAVES; EXPERIMENTAL DATA; SOLAR ELECTRONS; SOLAR PROTONS; SOLAR WIND; BARYONS; DATA; ELECTRONS; ELEMENTARY PARTICLES; FERMIONS; HADRONS; INFORMATION; LEPTONS; NUCLEONS; NUMERICAL DATA; PROTONS; RADIATIONS; SOLAR ACTIVITY; SOLAR PARTICLES; SOLAR RADIATION; STELLAR RADIATION; 640203* - Atmospheric Physics- Magnetospheric Phenomena- (-1987)

Citation Formats

Tsurutani, B T, Smith, E J, Thorne, R M, Anderson, R R, Gurnett, D A, Parks, G K, Lin, C S, and Russell, C T. Wave-particle interactions at the magnetopause: Contributions to the dayside aurora. United States: N. p., 1981. Web. doi:10.1029/GL008i002p00183.
Tsurutani, B T, Smith, E J, Thorne, R M, Anderson, R R, Gurnett, D A, Parks, G K, Lin, C S, & Russell, C T. Wave-particle interactions at the magnetopause: Contributions to the dayside aurora. United States. doi:10.1029/GL008i002p00183.
Tsurutani, B T, Smith, E J, Thorne, R M, Anderson, R R, Gurnett, D A, Parks, G K, Lin, C S, and Russell, C T. Sun . "Wave-particle interactions at the magnetopause: Contributions to the dayside aurora". United States. doi:10.1029/GL008i002p00183.
@article{osti_5988884,
title = {Wave-particle interactions at the magnetopause: Contributions to the dayside aurora},
author = {Tsurutani, B T and Smith, E J and Thorne, R M and Anderson, R R and Gurnett, D A and Parks, G K and Lin, C S and Russell, C T},
abstractNote = {A strong correlation between intense, broad-band 10--10/sup 5/ Hz plasma waves and 1--6 keV electrons and protons are observed on ISEE and 2 at the low latitude dayside magnetopause. Wave and particle features have been characterized by taking averages over ten events. The 10--10/sup 3/ Hz magnetic waves and the 10--10/sup 5/ Hz electric emissions can be represented by the power-law spectra, I/sub m/ = 10 f/sup -3.9/ nT/sup 2//Hz and I/sub e/ = 3 x 10/sup -5/ f/sup -2.8/ V/sup 2//m/sup 2/ Hz, respectively. The electron and proton fluxes and spectral shapes are nearly constant from event-to-event, and are characterized by j/sup -/ = 3 x 10/sup 5/ E/sup -1.8/ cm/sup -2/ sec/sup -1/ ster/sup -1/ keV/sup -1/ and j/sup +/ = 10/sup 7/ E/sup -2.5/ cm/sup -2/ sec/sup -1/ ster/sup -1/ keV/sup -1/. Using typical magnetopause plasma and field values of 20 cm/sup -3/ and 50 nT, it is shown tha the 1--10 keV electrons and protons are scattered near the limit of strong pitch angle diffusion by the observed waves. A precipitation flux of approx.0.15 ergs/cm/sup 2/ sec is calculated, indicating a significant contribution to the dayside aurora.},
doi = {10.1029/GL008i002p00183},
journal = {Geophys. Res. Lett.; (United States)},
number = ,
volume = 8:2,
place = {United States},
year = {1981},
month = {2}
}