Journal ArticleDOI
Plasma wave turbulence in the strong coupling region at comet Giacobini‐Zinner
Ferdinand V. Coroniti,Charles F. Kennel,F. L. Scarf,Edward J. Smith,Bruce T. Tsurutani,S. J. Bame,Michelle F. Thomsen,R.J. Hynds,K.-P. Wenzel +8 more
TLDR
Within 100,000 km of comet Giacobini-Zinner's nucleus, strong plasma wave turbulence was detected by the ICE electric and magnetic field wave instruments as mentioned in this paper, and the spatial profiles of the wave amplitudes are compared with measurements of the heavy ion fluxes of cometary origin, the plasma electron density, and the magnetic field strength.Abstract:
Within 100,000 km of comet Giacobini-Zinner's nucleus, strong plasma wave turbulence was detected by the ICE electric and magnetic field wave instruments. The spatial profiles of the wave amplitudes are compared with measurements of the heavy ion fluxes of cometary origin, the plasma electron density, and the magnetic field strength. The general similarity of the wave and heavy ion profiles suggest that the waves might be generated by free energy in the pick-up ion distribution function. However, the expected parallel streaming instability of electrostatic modes generates waves with frequencies that are too low to explain the observations. The observed low frequency magnetic turbulence is plausibly explained by the lower hybrid loss-cone instability of heavy ions.read more
Citations
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Book ChapterDOI
Comets: a Laboratory for Plasma Waves and Instabilities
TL;DR: In this paper, a review discusses the various plasma waves and instabilities detected in the vicinity of comets and the role of nonlinear waves in wave-particle interactions, focusing on nonlinear wave evolution.
Journal ArticleDOI
Lower hybrid waves at comet 67P/Churyumov–Gerasimenko
Mats André,Elias Odelstad,Daniel B. Graham,Anders Eriksson,Tomas Karlsson,G. Stenberg Wieser,Erik Vigren,C. Norgren,F. L. Johansson,P. Henri,Martin Rubin,Ingo Richter +11 more
TL;DR: In this paper, the authors investigate the generation of waves in the lower hybrid frequency range by density gradients in the near plasma environment of comet 67P/Churyumov-Gerasimenko.
Journal ArticleDOI
Control of plasma waves associated with the space shuttle by the angle between the orbiter's velocity vector and the magnetic field
Iver H. Cairns,Donald A. Gurnett +1 more
TL;DR: In this article, the amplitude and spectral character of some of these waves are controlled by the angle between the magnetic field and the shuttle's velocity vector VT relative to the ionospheric plasma.
Journal ArticleDOI
Lower hybrid waves upstream of comets and their implications for the comet Halley “bow wave”
TL;DR: In this article, the authors considered collective plasma effects associated with the presence of pickup ring ions (protons and water ions) in the vicinity of the supermagnetosonic to submagnetous transition region in the quasi-perpendicular limit and emphasized the linear and nonlinear evolution of instabilities around the lower hybrid frequency.
Journal ArticleDOI
Rosetta measurements of lower hybrid frequency range electric field oscillations in the plasma environment of comet 67P
Tomas Karlsson,Anders Eriksson,Elias Odelstad,Mats André,G. Dickeli,Anita Kullen,Per-Arne Lindqvist,Hans Nilsson,Ingo Richter +8 more
TL;DR: The first electric field measurements from 67P/Churyumov-Gerasimenko were performed by the Rosetta dual Langmuir probe instrument LAP in this article.
References
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Journal ArticleDOI
Electromagnetic instabilities produced by neutral-particle ionization in interplanetary space
C. S. Wu,R. C. Davidson +1 more
TL;DR: In this article, the authors examined the effect of photoionization of a small population of neutral atoms (hydrogen or helium) in interplanetary space, and found that even if the density of the newly ionized particles is only a very small fraction of that of the solar wind, these particles can efficiently excite electromagnetic waves by means of a new collective instability.
Journal ArticleDOI
Hydromagnetic waves and instabilities associated with cometary ion pickup: ICE observations
TL;DR: The hydromagnetic turbulence surrounding a comet Giacobini-Zinner is characterized by two dominant components: large amplitude, linearly polarized waves with periods near 100 s and circularly polarized wave packets with period near 3 s as discussed by the authors.
Journal ArticleDOI
Lower‐hybrid‐drift wave turbulence in the distant magnetotail
TL;DR: In this paper, it is shown that existence conditions for the lower-hybrid-drift instability can be met, and the observed frequency spectra and polarization are in good agreement with the predictions of linear theory.
Journal ArticleDOI
International cometary explorer encounter with giacobini-zinner: magnetic field observations.
Edward J. Smith,Bruce T. Tsurutani,James A. Slvain,Douglas E. Jones,George L. Siscoe,D. Asoka Mendis +5 more
TL;DR: The vector helium magnetometer on the International Cometary Explorer observed the magnetic fields induced by the interaction of comet Giacobini-Zinner with the solar wind, which consisted of two lobes, containing oppositely directed fields with strengths up to 60 nanoteslas.
Journal ArticleDOI
Comet giacobini-zinner: plasma description.
S. J. Bame,R. C. Anderson,J. R. Asbridge,Daniel N. Baker,W. C. Feldman,Stephen A. Fuselier,J. T. Gosling,David J. McComas,Michelle F. Thomsen,D. T. Young,R. D. Zwickl +10 more
TL;DR: A strong interaction between the solar wind and comet Giacobini-Zinner was observed oh 11 September 1985 with the Los Alamos plasma electron experiment on the International Cometary Explorer spacecraft, and a narrow, high-density core of plasma, presumably the developing plasma tail was found.