Ulysses observations of a coronal origin particle event at 32° south heliographic latitutde
Simnett, G. M.; Pick, M.; Kerdraon, A.; Lanzerotti, L. J.; Armstrong, T. P.; Roelof, E. C.; Lemen, J.; Buttighoffer, A.; Hoang, S.
France, United States, United Kingdom
Abstract
A remarkable streaming beam-like particle event of 60 keV-5 MeV ions and of 38 315 keV electrons has been reported previously. This event has been associated with the passage of a Coronal Mass Ejection (CME) over the Ulysses spacecraft on June 9 13, 1993. At this time, the spacecraft was located at 4.6 AU from the sun and at an heliolatitude of 32° south. It was proposed (Armstrong et al., 1994) that the particle injection source could have been of coronal origin. In this study, we analyse the solar activity during this period. We identify a region of solar radio noise storms in the corona and in particular, a flare on June 7 that presents all the required characteristics to produce the hot plasma beam observed in the interplanetary medium.