Anomalous Cosmic Ray Production in the Heliosheath

Details Anomalous Cosmic Ray Production in the Heliosheath Anomalous Cosmic Ray Production in the Heliosheath

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsh21a1497c&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SH21A-1497

Physics

[2114] Interplanetary Physics / Energetic Particles, [2124] Interplanetary Physics / Heliopause And Solar Wind Termination, [2126] Interplanetary Physics / Heliosphere/Interstellar Medium Interactions

Scientific paper

The offset between the sun’s dipole and rotational axes generates a series of vast folds in the sun’s magnetic field, producing a sectored field structure in which the dominant azimuthal component reverses sign periodically. Between the heliospheric termination shock and the heliopause, these sectors are compressed, and the decrease in current sheet thickness between sectors favors magnetic reconnection, an efficient accelerator of charged particles. As interstellar hydrogen drifts across the heliopause, the atoms become ionized in the solar wind, and the “pickup” of these particles by the solar wind produces a family of high-energy ions. The energization of these ions is explored, demonstrating that they gain energy by means of reflection inside contracting magnetic islands in a first order Fermi process.

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