Journal ArticleDOI
Upstream and magnetosheath energetic ions with energies to ≈2 MeV
R. M. Skoug,Robert Winglee,Michael P. McCarthy,George K. Parks,Robert P. Lin,K. A. Anderson,C. Carlson,Robert E. Ergun,Davin Larson,J. P. McFadden,Henri Rème,J. M. Bosqued,C. d'Uston,T. R. Sanderson,K.-P. Wenzel,R. P. Lepping,Adam Szabo +16 more
TLDR
In this paper, the first observations of ≃2 MeV ion bursts in the upstream region and the magnetosheath of the WIND spacecraft were presented, which has strong implications for the ion source and acceleration mechanisms.Abstract:
We present the first observations of ≃2 MeV ion bursts detected in the upstream region and the magnetosheath by the three-dimensional (3D) plasma and energetic particles instrument on the WIND spacecraft. This instrument measures the full 3D distribution of particles from a few eV to several MeV, and allows characterization of the upstream ions in both pitch angle and energy. The new feature observed is the presence of bursts of ions at energies extending up to ≃2 MeV, both upstream and in the magnetosheath. The observation of MeV ions has strong implications for the ion source and acceleration mechanisms.read more
Citations
More filters
Journal ArticleDOI
The WIND spacecraft and its early scientific results
K. W. Ogilvie,Michael D. Desch +1 more
TL;DR: The WIND spacecraft, part of the ISTP program, was launched by NASA on 1 November 1994, to study the interplanetary medium and the effects of changes and disturbances in it upon the magnetosphere as mentioned in this paper.
Journal ArticleDOI
Characteristics of energetic (≳30 keV/nucleon) ions observed by the Wind/STEP instrument upstream of the Earth's bow shock
TL;DR: In this paper, the authors investigated the characteristics of energetic ions (0.03-2.0 MeV/nucleon) during 1225 upstream events observed by the Energetic Particles: Anisotropy, Composition, and Transport/Suprathermal Energy Particle (EPACT/STEP) instrument on board the Wind spacecraft from 1994 day 325 to 1999 day 92.
Journal ArticleDOI
Observations of Jovian upstream events by Ulysses
TL;DR: In this paper, the heliosphere instrument for spectra composition and anisotropy at low energy (HISCALE) experiment on board the Ulysses spacecraft, during the Jovian flyby was used.
Journal ArticleDOI
On the bow shock θBn dependence of upstream 70 keV to 2 MeV ion fluxes
TL;DR: In this paper, a statistical study of 216 energetic ion events observed just upstream of Earth's bow shock by the Wind spacecraft is presented. But the authors only include upstream ion events associated with a local bow shock crossing and determine the shock geometry locally, rather than from extrapolations of remote upstream observations to a model shock source location.
Journal ArticleDOI
Acceleration sites of energetic ions upstream of the Earth's bow shock and in the magnetosheath: Statistical study on charge states of heavy ions
TL;DR: In this article, the acceleration sites of energetic ions upstream of the Earth's bow shock and in the dayside magnetosheath were identified by the Energetic Particles and Ion Composition (EPIC) instrument on board the Geotail spacecraft from 1995 to 2001.
References
More filters
Journal ArticleDOI
A three-dimensional plasma and energetic particle investigation for the wind spacecraft
Robert P. Lin,K. A. Anderson,S. Ashford,C. W. Carlson,D. W. Curtis,Robert E. Ergun,Davin Larson,James P. McFadden,Matthew D. McCarthy,George K. Parks,Henri Rème,J. M. Bosqued,J. Coutelier,F. Cotin,C. d'Uston,K. P. Wenzel,T. R. Sanderson,J. P. G. Henrion,J. C. Ronnet,G. Paschmann +19 more
TL;DR: In this article, the authors used top-hat symmetrical spherical section electrostatic analyzers with microchannel plate detectors to measure ions and electrons from ∼3 eV to 30 keV.
Journal ArticleDOI
30- to 100-keV protons upstream from the earth's bow shock
TL;DR: In this article, it was shown that the lower energy (3-4 keV) protons accelerated and reflected by the bow shock and the Alfven waves observed upstream are in some way responsible for the origin of the 30- to 100-keV protons in very large regions upstream from the bow wave.
Journal ArticleDOI
Measurements of bow shock particles far upstream from the Earth
TL;DR: In this paper, strong asymmetries in the ion angular pitch angle distribution are often observed, a consequence of the sharp gradient in guiding center density and very weak scattering, due to the restricted spatial region over which these particles are accelerated.
Journal ArticleDOI
Upstream energetic ions and electrons: Bow shock‐associated or magnetospheric origin?
TL;DR: In this paper, an analysis of 35 proton bursts observed with the Max-Planck-Institut/University of Maryland sensor system on ISEE 3 far upstream of the earth's bow shock is made.
Journal ArticleDOI
Simultaneous measurements of energetic ion (≥50 keV) and electron (≥220 keV) activity upstream of Earth's bow shock and inside the plasma sheet: Magnetospheric source for the November 3 and December 3, 1977 upstream events
TL;DR: In this article, simultaneous observations of energetic ions and electrons by the IMP 7 and 8 spacecraft are used to separate temporal variations from spatial variations during the upstream ion events observed on December 3, 1977 and November 2-3, 1977, in order to determine the source of these particles.