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Analysis of the waves associated with the unusual interplanetary shock observed on day 109, 1992
Balogh, A.; Lucek, E. A.
On day 109 of 1992 Ulysses observed an extraordinary interplanetary shock at a time of extremely unusual interplanetary magnetic field conditions. The field was closely aligned with the radial direction for nearly a day ahead of the shock, suggesting that it was most likely to be a quasi-parallel shock. Unlike most interplanetary shocks, this shoc…
Two spacecraft observations of transient shocks and ejecta in the interplanetary medium
González-Esparza, J. Américo; Bravo, Silvia
We compare Ulysses observations of 22 forward transient shocks (FTSs) and 11 ejecta during the first 19 months of its mission, with observations near Earth by IMP, in order to infer some properties of the propagation of these transient events in the interplanetary medium. We found that 13 of the 22 FTSs detected by Ulysses were also detected by IM…
Particle propagation channel detected at 4.7 AU inside a corotating interaction region
Pick, M.; Lanzerotti, L. J.; Sarris, E. T. +5 more
This study presents an interplanetary particle (electrons and ions) event which was detected at 4.7 AU by the instruments on the Ulysses spacecraft inside a corotating interaction region between a fast and slow solar wind stream. A particle propagation channel is identified where the particles can propagate from the Sun nearly scatter free within …
Energetic solar particle dropouts detected by Ulysses at 1.63 AU: A possible encounter with the Earth's distant magnetotail
Phillips, John L.; Lin, Robert P.; Ashford, Stephen M. +2 more
Fast solar particles are used to trace the topology of the interplanetary magnetic field during a solar event detected by the heliosphere instrument for spectra composition and anisotropy at low energy (HISCALE) on the Ulysses spacecraft on January 2, 1991. Two sharp-edged dropouts, lasting for 10 and 25 min, were detected in the fluxes of solar i…
The turbulent state of cometary ion pickup generated fluctuations near comet P/Halley
Krauklis, I.; Johnstone, A. D.
One of the principal effects of an outgassing comet is to introduce additional mass into the solar wind flow. This mass-loading process results in the generation of Alfvén waves via ion-cyclotron resonance. In the case of the Halley encounter this source of ``new'' fluctuations was introduced into a low speed solar wind 0.89 AU from the sun. Previ…