|
|
 |
|
|
Ann. Geophys., 21, 1249-1256, 2003
www.ann-geophys.net/21/1249/2003/
© European Geosciences Union 2003
Magnetic topology of coronal mass ejection events out of the ecliptic: Ulysses/HI-SCALE energetic particle observations
O. E. Malandraki1,2, E. T. Sarris1, and G. Tsiropoula2
1Democritus University of Thrace, Department of Telecommunications and Space Physics, Xanthi, 67100, Greece
2National Observatory of Athens, ISARS, Athens, 15236, Greece
Abstract. Solar energetic particle
fluxes (Ee > 38 keV) observed by the ULYSSES/HI-SCALE
experiment are utilized as diagnostic tracers of the large-scale structure and
topology of the Interplanetary Magnetic Field (IMF) embedded within two
well-identified Interplanetary Coronal Mass Ejections (ICMEs) detected at 56°
and 62° south heliolatitudes by ULYSSES during the solar maximum southern
high-latitude pass. On the basis of the energetic solar particle observations
it is concluded that: (A) the high-latitude ICME magnetic structure observed in
May 2000 causes a depression in the solar energetic electron intensities which
can be accounted for by either a detached or an attached magnetic field
topology for the ICME; (B) during the traversal of the out-of-ecliptic ICME
event observed in July 2000 energetic electrons injected at the Sun are
channeled by the ICME and propagate freely along the ICME magnetic field lines
to 62° S heliolatitude.
Key words. Interplanetary physics
(energetic particles; interplanetary magnetic fields)
Full Article in PDF (1072 KB) |
|
|
