TRACING THE TOPOLOGY OF THE OCTOBER 18-20, 1995, MAGNETIC CLOUD WITH SIMILAR-TO-0.1-10(2)-KEV ELECTRONS

Five solar impulsive similar to 1-10(2) keV electron events were detec ted while the WIND spacecraft was inside the magnetic cloud observed u pstream of the Earth on October 18 - 20, 1995. The solar type III radi o bursts produced by these electrons can be directly traced from simil ar to 1 AU back to X-ray flares in solar active region AR 7912, implyi ng that at least one leg of the cloud was magnetically connected to th at region. Analysis of the electron arrival times shows that the lengt hs of magnetic field lines in that leg vary from similar to 3 AU near the cloud exterior to similar to 1.2 AU near the cloud center, consist ent with a model force-free helical flux rope. Although the cloud magn etic field exhibits the smooth, continuous rotation signature of a hel ical flux rope, the similar to 0.1-1 keV heat flux electrons and simil ar to 1-10(2) keV energetic electrons show numerous simultaneous abrup t changes from bidirectional streaming to unidirectional streaming to complete flux dropouts. We interpret these as evidence for patchy disc onnection of one end or both ends of cloud magnetic field lines from t he Sun.