Acceleration of interstellar helium pickup ions at the Earth's bow shock: GEOTAIL observation

Details Acceleration of interstellar helium pickup ions at the Earth's bow shock: GEOTAIL observation Acceleration of interstellar helium pickup ions at the Earth's bow shock: GEOTAIL observation

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29n..33o&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 14, pp. 33-1, CiteID 1688, DOI 10.1029/2001GL014150

Physics

4

Interplanetary Physics: Pickup Ions, Interplanetary Physics: Cosmic Rays, Interplanetary Physics: Interstellar Gas, Interplanetary Physics: Planetary Bow Shocks

Scientific paper

After ionization in the solar wind, He+ pickup ions of the interstellar origin are expected to be accelerated at heliospheric shocks (the termination shock, CIR (co-rotating interaction region) shocks, and planetary bow shocks), and to become the seed population for anomalous cosmic rays. Although there are many theoretical attempts to treat the 'injection' process of the helium pickup ions at these shocks, there has been little direct observational evidence. In this report we present in situ identification of the initial acceleration process of pickup He+ at the bow shock.

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