Physics
Scientific paper
Jan 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3203s05b&link_type=abstract
Geophysical Research Letters, Volume 32, Issue 3, CiteID L03S05
Physics
1
Interplanetary Physics: Energetic Particles (7514), Interplanetary Physics: Interplanetary Magnetic Fields, Interplanetary Physics: Interplanetary Shocks, Interplanetary Physics: Solar Wind Plasma
Scientific paper
A transient flow system observed at 1 AU from October 24-November 7, 2003 (consisting of several shocks, ejecta and possibly other flows) moved away from the Sun for ~180 days to 73 AU, where Voyager 2 (V2) observed a large Merged Interaction Region (MIR) associated with a fast (560 km/s) stream that followed a forward shock and moved past V2 for ~1.5 solar rotations. The MIR and stream were associated with a large decrease in the cosmic ray intensity and an exceptionally large enhancement in the flux of ~2.5 MeV protons. The speed and the cosmic ray profiles observed by V2 were very simple, resembling the profiles of a shock/sheath/ejecta flow and a Forbush decrease, respectively, at 1 AU, but rescaled by a factor by a factor of ~10. The onset of the MIR-associated decrease in the cosmic ray intensity occurred 10 days after the shock, lasting several days, with a full recovery ~70 days after the onset.
Burlaga Leonard Francis
McDonald Frank B.
Ness Norman F.
Richardson John D.
Stone Edward C.
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