Journal ArticleDOI
First results from the Giotto magnetometer experiment at comet Halley
Fritz M. Neubauer,Karl-Heinz Glassmeier,M. Pohl,Joachim Raeder,Mario H. Acuña,L. F. Burlaga,Norman F. Ness,G. Musmann,F. Mariani,Max K. Wallis,E. Ungstrup,H. U. Schmidt +11 more
TLDR
The Giotto magnetometer experiment at comet Halley has for the first time provided magnetic field measurements in all the important spatial regions characterizing the front-side interaction between the solar-wind magnetoplasma and a cometary atmosphere.Abstract:
The Giotto magnetometer experiment at comet Halley has for the first time provided magnetic field measurements in all the important spatial regions characterizing the front-side interaction between the solar-wind magnetoplasma and a cometary atmosphere. Upstream waves of cometary origin have been observed at distances greater than two million km from the comet, both inbound and outbound. A cometary bow shock has been identified at 1.15 million inbound on the dawn side and a thick quasi-parallel cometary bow shock outbound. A turbulent magnetosheath has been observed further inside. A magnetic pile-up region has been identified inside 135,000 km, inbound, and 263,000 km, outbound, with fields up to 57 and 65 nT, respectively. A cavity region with essentially zero magnetic field has been discovered, with a width of 8500 km along the trajectory around closest approach.read more
Citations
More filters
Journal ArticleDOI
Ion composition and dynamics at comet Halley
Hans Balsiger,Kathrin Altwegg,F. Bühler,J. Geiss,A. G. Ghielmetti,Bruce E. Goldstein,Raymond Goldstein,Wesley T. Huntress,Wing-Huen Ip,Alan J. Lazarus,A. Meier,Marcia Neugebauer,U. Rettenmund,H. Rosenbauer,Rainer Schwenn,R. D. Sharp,E. G. Shelley,E. Ungstrup,D. T. Young +18 more
TL;DR: The Giotto space probe's ion mass spectrometer has obtained data on the composition and velocity distributions of cometary ions at distances of between 7.5 million and 1300 km from the comet Halley nucleus as mentioned in this paper.
Journal ArticleDOI
Electromagnetic ion/ion instabilities and their consequences in space plasmas: A review
TL;DR: In this article, a review of recent research on the theory and computer simulations of electromagnetic ion/ion instabilities and their consequences in space plasmas is presented. But the authors do not consider the effects of these instabilities on the dynamics of the space physics regimes which display enhanced fluctuations due to them.
Journal ArticleDOI
Negative ions in the coma of comet Halley
P. Chaizy,H. Rème,Jean-André Sauvaud,Claude d’Uston,Robert P. Lin,Davin Larson,David L. Mitchell,K. A. Anderson,C. W. Carlson,A. Korth,D. A. Mendis +10 more
TL;DR: In this paper, negative ions were detected in the inner coma of Comet Halley at three mass peaks at 7-19, 22-65, and 85-110 AMU.
Journal ArticleDOI
Electron impact ionization in the vicinity of comets
TL;DR: In this article, electron distributions measured in the vicinity of comets Halley and Giacobini-Zinner by instruments on the VEGA and ICE spacecraft, respectively, are used to calculate electron impact ionization frequencies.
Journal ArticleDOI
RPC-MAG The Fluxgate Magnetometer in the ROSETTA Plasma Consortium
Karl-Heinz Glassmeier,Ingo Richter,Andrea Diedrich,G. Musmann,Uli Auster,Uwe Motschmann,André Balogh,Chris Carr,Emanuele Cupido,Andrew J. Coates,Martin Rother,Konrad Schwingenschuh,Karoly Szego,Bruce T. Tsurutani +13 more
TL;DR: In this paper, the fluxgate magnetometer experiment onboard the ROSETTA spacecraft aims to measure the magnetic field in the interaction region of the solar wind plasma with comet 67P/Churyumov-Gerasimenko.
References
More filters
Journal ArticleDOI
The interaction of the solar wind with a comet
TL;DR: In this article, an axial-symmetric model based on hydrodynamics modified by source terms is proposed for the flow of plasma on the sunward side of a comet.
Journal ArticleDOI
The dynamic behavior of the Venus ionosphere in response to solar wind interactions
Larry H. Brace,R. F. Theis,Walter R. Hoegy,John H. Wolfe,John D. Mihalov,Christopher T. Russell,R. C. Elphic,Andrew F. Nagy +7 more
TL;DR: The dynamics of the Venus ionosphere relates to the variations in the solar wind and the ionosheath magnetic fields as demonstrated by the electron density and temperature measurements of the Pioneer Venus orbiter electron probe.
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.
Journal ArticleDOI
The Giotto encounter with comet Halley
TL;DR: The Giotto spacecraft encountered comet Halley on 14 March 1986, approaching to within ∼600km of the nucleus as mentioned in this paper, and its scientific payload comprised ten hardware experiments: a narrow-angle camera, three mass spectrometers (for neutrals, ions and dust), various dust detectors a photopolarimeter and a set of plasma experiments.