Solar magnetic connections in gradual solar energetic particle events

Details Solar magnetic connections in gradual solar energetic particle events Solar magnetic connections in gradual solar energetic particle events

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja.....3150k&link_type=abstract

EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #3150

Computer Science

Scientific paper

Gradual solar energetic particle (SEP) events are assumed to be produced in coronal and interplanetary shocks driven by fast coronal mass ejections (CMEs). Most of these SEP-associated fast CMEs are large in angular extent and intersect the ecliptic plane. In some cases, however, their angular extents lie completely outside the ecliptic plane. If we assume that the associated coronal shocks share the CME angular extents, the magnetic field lines connecting the Earth with the solar source surface (positioned at 2.5 Rs from Sun center) are confined to the ecliptic plane, and SEPs undergo no cross-field diffusion, then such SEP events should not be observed. One explanation for these observed SEP events is that the solar coronal connection of the field lines at Earth does not lie in the ecliptic plane in the solar coronal regions where shock acceleration takes place, which is thought to occur between ~2-10 Rs. To test this idea, the interplanetary magnetic field must be traced from Earth back to these coronal regions. A simple way to do this is to use the potential source surface and Schatten current sheet models in combination along with the assumption of constant solar wind flow speed along magnetic field lines. This approach allows interplanetary field lines to be traced from 1 AU back to coronal regions and therefore determine whether high latitudinal connections can explain the SEPs from high-latitude CMEs. We select Wind EPACT SEP events and associated narrow or high-latitude Lasco CMEs to test for high-latitude connections using the magnetic field model.

Affiliated with

Also associated with

No associations

Rating

Solar magnetic connections in gradual solar energetic particle events does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Solar magnetic connections in gradual solar energetic particle events, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solar magnetic connections in gradual solar energetic particle events will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-842423