Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh51b1676b&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #SH51B-1676
Astronomy and Astrophysics
Astrophysics
[7511] Solar Physics, Astrophysics, And Astronomy / Coronal Holes, [7514] Solar Physics, Astrophysics, And Astronomy / Energetic Particles, [7524] Solar Physics, Astrophysics, And Astronomy / Magnetic Fields, [7536] Solar Physics, Astrophysics, And Astronomy / Solar Activity Cycle
Scientific paper
The summer of 2009 saw the largest cosmic ray flux ever measured at Earth. Cosmic ray intensities in the 270-450 MeV/nucleon range were nearly 20% larger than anything previously recorded. Clearly, something dramatically affected the cosmic ray 'deflector shield' of the Earth during the most recent solar activity minimum. We explore the cause of this marked increase by examining properties of the global solar magnetic field and conditions in the solar wind during the previous solar minimum and compare these to previous solar cycles using in-situ and remote sensing observations.
Burkepile Joan
Gurman Joe B.
Leamon Robert J.
McIntosh Scott W.
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