Search Publications
Flare- and coronal mass ejection (CME)-associated type II bursts and related radio emissions
Vourlidas, Angelos; Leblanc, Yolande; Dulk, George A. +1 more
We report on two events that occurred within 6 hours of each other on November 3, 1997. They were observed with ground-based spectrographs in the meter to decameter range and with the WAVES experiment on the Wind spacecraft at longer wavelengths. Complementary observations were made with Extreme Ultraviolet Imaging Telescope (EIT) and Large Angle …
Energetic proton observations at 1 and 5 AU: 1. January-September 1997
Lario, D.; Balogh, A.; Maksimovic, M. +6 more
We present energetic particle observations by the Ulysses and Wind spacecraft during the years 1997-1998. During this period, Ulysses moved from +19° to -19° in heliographic latitude with heliocentric distances ranging from 4.71 to 5.41 AU. Wind was located near the Earth at 1 AU from the Sun in the ecliptic plane. The proximity of Ulysses to the …
Determination of the abundance of aluminum in the solar wind with SOHO/CELIAS/MTOF
Bochsler, Peter; Wurz, Peter; Weygand, James M. +2 more
The Al/Mg abundance ratio provides an excellent test case for investigating possible fractionation processes among low First Ionization Potential (FIP) elements in the solar wind. Al and Mg are refractory elements; their abundance ratio has been well determined in solar system materials and inferences for the abundance ratio in the solar atmospher…
Effect of magnetic discontinuities on the propagation of energetic particles: Ulysses observations of the onset of the March 1991 solar particle event
Balogh, A.; Forsyth, R. J.; Phillips, J. L. +5 more
We present observations of energetic ions from the Cosmic Ray and Solar Particle Investigation (COSPIN) and Heliospshere Instrument for Spectra Composition and Anisotropy at Low Energy (HISCALE) instruments on board the Ulysses spacecraft. We examine in detail the onset of energetic ions observed during the March 1991 series of solar events. Activ…
On the processing and transport of inner source hydrogen
Geiss, J.; Schwadron, N. A.
The inferred spatial distribution, inferred dust grain properties, and abundances of inner source pickup ions have been discussed recently by Gloeckler et al. [this issue] and Schwadron et al. [this issue]. The abundances of all observed inner source constituents, with the exception of protons, appear to be very similar to solar wind abundances. T…
A model for accelerated density enhancements emerging from coronal streamers in Large-Angle and Spectrometric Coronagraph observations
Cargill, Peter J.; Schmidt, Joachim M.
Recent Large-Angle and Spectrometric Coronagraph (LASCO) white light observations, ranging between 2RS and 32RS, trace accelerated density enhancements in the vicinity of the Sun which can be detected as enhancement in the intensity of the Thomson scattered light. One interpretation of these observed density enhancements is t…
Properties and radial trends of coronal mass ejecta and their associated shocks observed by Ulysses in the ecliptic plane
McComas, D. J.; Forsyth, R. J.; Riley, Pete +1 more
In this paper, magnetic and plasma measurements are used to analyze 17 interplanetary coronal mass ejections (CMEs) identified by Ulysses during its in-ecliptic passage to Jupiter. We focus on the expansion characteristics of these CMEs (as inferred from the time rate of change of the velocity profiles through the CMEs) and the properties of 14 fo…
Ulysses observations of sector boundaries at aphelion
Forsyth, R.; Reisenfeld, D.; Roth, M. +1 more
We study a sample of sector boundaries observed by Ulysses near its early 1998 aphelion at 5.4 AU. We relate these sector boundaries to solar wind structure seen by Wind at 1 AU, guided by a hydrodynamic simulation. For each Ulysses sector boundary we are able to identify a corresponding 1 AU sector boundary, except when strong transients are pres…
Comment on ``Bulk flows of hot plasma in the Jovian magnetosphere: A model of anisotropic fluxes of energetic ions'' by S. E. Hawkins III, A. F. Cheng, and L. J. Lanzerotti
Simnett, G. M.; Desai, M. I.
Abstract Available from AGU