Drift Effects and Average Features of Cosmic Ray Density Gradient in Cirs During Successive Two Solar Minimum Periods

Details Drift Effects and Average Features of Cosmic Ray Density Gradient in Cirs During Successive Two Solar Minimum Periods Drift Effects and Average Features of Cosmic Ray Density Gradient in Cirs During Successive Two Solar Minimum Periods

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsh23a1621f&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SH23A-1621

Physics

2101 Coronal Mass Ejections (7513), 2104 Cosmic Rays, 2134 Interplanetary Magnetic Fields

Scientific paper

We deduce on hourly basis the spatial gradient of the cosmic ray density in three dimension from the directional anisotropy of high-energy (~ 50 GeV) galactic cosmic ray (GCR) intensity observed with a global network of muon detectors on the Earth's surface. By analyzing the average features of the gradient in the corotational interaction regions (CIRs) recorded in successive two solar activity minimum periods, we find that the observed latitudinal gradient (Gz) changes its sign from negative to positive on the Earth's HCS crossing from the northern to the southern hemisphere in A<0 epoch, while it changes from positive to negative in A>0 epoch. This is in accordance with the drift prediction. We also find a negative enhancement in Gx after the HCS crossing in both A<0 and A>0 epochs, but not in Gy. This asymmetrical feature of Gx and Gy indicates significant contributions from the parallel and perpendicular diffusions to the gradient in CIRs in addition to the contribution from the drift effect.

Affiliated with

Also associated with

No associations

Rating

Drift Effects and Average Features of Cosmic Ray Density Gradient in Cirs During Successive Two Solar Minimum Periods 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 Drift Effects and Average Features of Cosmic Ray Density Gradient in Cirs During Successive Two Solar Minimum Periods, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drift Effects and Average Features of Cosmic Ray Density Gradient in Cirs During Successive Two Solar Minimum Periods will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1247247