R E Ergun; D E Larson; J M McTiernan, R P Lin; J P McFadden; C
W Carlson; K A Anderson; S Ashford
M McCarthy; G Parks
H Rème; J M Bosqued;
K-P Wenzel; T R Sanderson
We present energetic particle observations from the 3-D Plasma experiment as a magnetic cloud passed by the Wind spacecraft on October 18 - 20, 1995. Although the magnetic field had a smooth, continuous signature of a helical rotation, the electron data show at least two distinct flux tubes inside the cloud. The heat flux was occasionally bi-directional, but mainly was seen in the -B direction. There were several solar type III radio bursts while the spacecraft was passing through the cloud. These electron events allow us to determine that one of the flux tubes in the cloud was magnetically connected to solar active region 7912, while the other flux tube(s) were not. A particularly strong solar type III radio burst occurred at ~0600 UT on October 20 occurred near the end of the cloud event. Subsequently, intense solar impulsive electron fluxes (500 eV - 500 keV) were observed traveling in the -B direction then, ~20 minutes later, appeared in the +B direction as well, implying that two flares may have occurred on opposite ends of the magnetic loop. These particle observations are used to refine the model of the magnetic cloud.
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