Broadband electrostatic noise in the magnetotail - Its relation to plasma sheet dynamics,

Atsuhiro Nishida, Tohru Hada, K. A. Anderson, R. R. Anderson, S. J. Bame, E. W. Jr. Hones

Research output: Contribution to journalArticle

Abstract

Intense broadband electrostatic noise is often observed in the magnetotail when the fast tailward flow and the southward polarity of the magnetic field indicate the progress of reconnection. We compare features of the noise with simultaneous observations of the magnetic field, plasma and energetic electrons. The noise intensity seems to maximize when the plasma density minimizes and the energetic electron flux rises in a spikelike fasion, appreciably later than the onset of the fast tailward flow associated with the southward magnetic polarity. Spectral characteristics of the noise suggest that in its high frequency math formula part at least the noise does not belong to normal modes of plasma waves. Several possibilities are considered for what this noise might be, including quasi-thermal noise in the non-Maxwellian plasma, artificial noise generated by spacecraft interaction with the medium, or electrostatic noise with wavelengths less than a Debye length.
Original languageEnglish
Article number10.1029/JA090iA05p04453
Pages (from-to)4453-4460
Number of pages8
JournalJournal of Geophysical Research
Volume90
Issue number5
Publication statusPublished - 1985

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magnetotails
magnetotail
Magnetic polarity
Electrostatics
electrostatics
Magnetic fields
broadband
Plasmas
Plasma waves
plasma
Thermal noise
Electrons
Plasma density
Beam plasma interactions
Spacecraft
Fluxes
Wavelength
polarity
magnetic fields
energetics

Cite this

Nishida, A., Hada, T., Anderson, K. A., Anderson, R. R., Bame, S. J., & Hones, E. W. J. (1985). Broadband electrostatic noise in the magnetotail - Its relation to plasma sheet dynamics, Journal of Geophysical Research, 90(5), 4453-4460. [10.1029/JA090iA05p04453].

Broadband electrostatic noise in the magnetotail - Its relation to plasma sheet dynamics, / Nishida, Atsuhiro; Hada, Tohru; Anderson, K. A. ; Anderson, R. R. ; Bame, S. J. ; Hones, E. W. Jr.

In: Journal of Geophysical Research, Vol. 90, No. 5, 10.1029/JA090iA05p04453, 1985, p. 4453-4460.

Research output: Contribution to journalArticle

Nishida, A, Hada, T, Anderson, KA, Anderson, RR, Bame, SJ & Hones, EWJ 1985, 'Broadband electrostatic noise in the magnetotail - Its relation to plasma sheet dynamics,', Journal of Geophysical Research, vol. 90, no. 5, 10.1029/JA090iA05p04453, pp. 4453-4460.
Nishida A, Hada T, Anderson KA, Anderson RR, Bame SJ, Hones EWJ. Broadband electrostatic noise in the magnetotail - Its relation to plasma sheet dynamics, Journal of Geophysical Research. 1985;90(5):4453-4460. 10.1029/JA090iA05p04453.
Nishida, Atsuhiro ; Hada, Tohru ; Anderson, K. A. ; Anderson, R. R. ; Bame, S. J. ; Hones, E. W. Jr. / Broadband electrostatic noise in the magnetotail - Its relation to plasma sheet dynamics,. In: Journal of Geophysical Research. 1985 ; Vol. 90, No. 5. pp. 4453-4460.
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